federal communications commission pt. 87tscm.com/47cfr87.pdf · federal communications commission...

187

Federal Communications Commission Pt. 87

the ship aboard which the ship earthstation is to be installed and operated.

(b) A station license for a portableship earth station may be issued to theowner or operator of portable earthstation equipment proposing to furnishsatellite communication services onboard more than one ship or fixed off-shore platform located in the marineenvironment.

[52 FR 27003, July 17, 1987, as amended at 54FR 49995, Dec. 4, 1989]

§ 80.1187 Scope of communication.

Ship earth stations must be used fortelecommunications related to thebusiness or operation of ships and forpublic correspondence of persons onboard. Portable ship earth stations areauthorized to meet the business, oper-ational and public correspondence tele-communication needs of fixed offshoreplatforms located in the marine envi-ronment as well as ships. The types ofemission are determined by theINMARSAT organization.

[52 FR 27003, July 17, 1987]

§ 80.1189 Portable ship earth stations.

(a) Portable ship earth stations areauthorized to operate on board morethan one ship. Portable ship earth sta-tions are also authorized to be operatedon board fixed offshore platforms lo-cated in international or United Statesdomestic waters.

(b) Portable ship earth stations mustmeet the rule requirements of shipearth stations with the exeception ofeligibility.

(c) Where the license of the portableship earth station is not the owner ofthe ship or fixed platform on which thestation is located, the station must beoperated with the permission of theowner or operator of the ship or fixedplatform.

[52 FR 27003, July 17, 1987]

RADIODETERMINATION

§ 80.1201 Special provisions for cable-repair ship stations.

(a) A ship station may be authorizedto use radio channels in the 285–315 kHzband in Region 1 and 285–325 kHz in anyother region for cable repair radio-

determination purposes under the fol-lowing conditions:

(1) The radio transmitting equipmentattached to the cable-marker buoy as-sociated with the ship station must bedescribed in the station application;

(2) The call sign used for the trans-mitter operating under the provisionsof this section is the call sign of theship station followed by the letters‘‘BT’’ and the identifying number ofthe buoy.

(3) The buoy transmitter must becontinuously monitored by a licensedradiotelegraph operator on board thecable repair ship station; and

(4) The transmitter must operateunder the provisions in § 80.375(b).

PART 87—AVIATION SERVICES

Subpart A—General Information

Sec.87.1 Basis and purpose.87.3 Other applicable rule parts.87.5 Definitions.

Subpart B—Applications and Licenses

87.17 Scope.87.18 Station license required.87.19 Basic eligibility.87.21 Standard forms to be used.87.23 Supplemental information required.87.25 Filing of applications.87.27 License term.87.29 Partial grant of application.87.31 Changes during license term.87.33 Transfer of aircraft station license

prohibited.87.35 Cancellation of license.87.37 Developmental license.87.39 Equipment acceptable for licensing.87.41 Frequencies.87.43 Operation during emergency.87.45 Time in which station is placed in op-

eration.87.47 Application for a portable aircraft sta-

tion license.87.51 Aircraft earth station commissioning.

Subpart C—Operating Requirements andProcedures

OPERATING REQUIREMENTS

87.69 Maintenance tests.87.71 Frequency measurements.87.73 Transmitter adjustments and tests.87.75 Maintenance of antenna structure

marking and control equipment.87.77 Availability for inspections.87.79 Answer to notice of violation.

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47 CFR Ch. I (10–1–97 Edition)Pt. 87

RADIO OPERATOR REQUIREMENTS

87.87 Classification of operator licenses andendorsements.

87.89 Minimum operator requirements.87.91 Operation of transmitter controls.

OPERATING PROCEDURES

87.103 Posting station license.87.105 Availability of operator permit or li-

cense.87.107 Station identification.87.109 Station logs.87.111 Suspension or discontinuance of oper-

ation.

Subpart D—Technical Requirements

87.131 Power and emissions.87.133 Frequency stability.87.135 Bandwidth of emission.87.137 Types of emission.87.139 Emission limitations.87.141 Modulation requirements.87.143 Transmitter control requirements.87.145 Acceptability of transmitters for li-

censing.87.147 Authorization of equipment.87.149 Special requirements for automatic

link establishment (ALE).

Subpart E—Frequencies

87.169 Scope.87.171 Class of station symbols.87.173 Frequencies.

Subpart F—Aircraft Stations

87.185 Scope of service.87.187 Frequencies.87.189 Requirements for public correspond-

ence equipment and operations.87.191 Foreign aircraft stations.

EMERGENCY LOCATOR TRANSMITTERS

87.193 Scope of service.87.195 Frequencies.87.197 ELT test procedures.87.199 Special requirements for 406.025 MHz

ELTs.

Subpart G—Aeronautical Advisory Stations(Unicoms)

87.213 Scope of service.87.215 Supplemental eligibility.87.217 Frequencies.

Subpart H—Aeronautical Multicom Stations


Subpart I—Aeronautical Enroute andAeronautical Fixed Stations

AERONAUTICAL ENROUTE STATIONS

87.261 Scope of service.87.263 Frequencies.87.265 Administrative communications.

AERONAUTICAL FIXED STATIONS


Subpart J—Flight Test Stations

87.299 Scope of service.87.301 Supplemental eligibility.87.303 Frequencies.87.305 Frequency coordination.87.307 Cooperative use of facilities.

Subpart K—Aviation Support Stations


Subpart L—Aeronautical Utility MobileStations

87.345 Scope of service.87.347 Supplemental eligibility.87.349 Frequencies.87.351 Frequency changes.

Subpart M—Aeronautical Search andRescue Stations


Subpart N—Emergency Communications

87.393 Scope of service.87.395 Plan for the Security Control of Air

Traffic and Air Navigation Aids (ShortTitle: SCATANA).

87.397 Emergency operations.

Subpart O—Airport Control Tower Stations

87.417 Scope of service.87.419 Supplemental eligibility.87.421 Frequencies.87.423 Hours of operation.87.425 Interference.

Subpart P—Operational Fixed Stations

87.445 Scope of service.87.447 Supplemental eligibility.87.449 Frequencies.87.451 Licensing limitations.


189

Federal Communications Commission § 87.5

Subpart Q—Stations in theRadiodetermination Service

87.471 Scope of service.87.473 Supplemental eligibility.87.475 Frequencies.87.477 Condition of grant for radio-

navigation land stations.87.479 Harmful interference to radio-

navigation land stations.87.481 Unattended operation of domestic

radiobeacon stations.

Subpart R—Civil Air Patrol Stations


Subpart S—Automatic WeatherObservation Stations


AUTHORITY: 48 Stat. 1066, 1082, as amended;47 U.S.C. 154, 303, 307(e) unless otherwisenoted. Interpret or apply 48 Stat. 1064–1068,1081–1105, as amended; 47 U.S.C. 151–156, 301–609.

SOURCE: 53 FR 28940, Aug. 1, 1988, unlessotherwise noted.

Subpart A—General Information§ 87.1 Basis and purpose.

This section contains the statutorybasis and provides the purpose forwhich this part is issued.

(a) Basis. The rules for the aviationservices in this part are promulgatedunder the provisions of the Commu-nications Act of 1934, as amended,which vests authority in the FederalCommunications Commission (Com-mission) to regulate radio transmissionand to issue licenses for radio stations.These rules conform with applicablestatutes and international treaties,agreements and recommendations towhich the United States is a party. Themost significant of these documentsare listed with the short title appear-ing in parentheses:

(1) Communications Act of 1934, asamended—(Communications Act).

(2) International TelecommunicationUnion Radio Regulations, in force forthe United States—(Radio Regula-tions).

(3) The Convention on InternationalCivil Aviation—(ICAO Convention).

(b) Purpose. This part states the con-ditions under which radio stations maybe licensed and used in the aviationservices. These rules do not governU.S. Government radio stations.

§ 87.3 Other applicable rule parts.Other applicable CFR title 47 parts

include:(a) Part 0 contains the Commission’s

organizations and delegations of au-thority. Part 0 also lists Commissionpublications, standards and proceduresfor access to Commission records andlocation of Commission monitoringstations.

(b) Part 1 contains rules of practiceand procedure for license applications,adjudicatory proceedings, rule makingproceedings, procedures for reconsider-ation and review of the Commission’sactions, provisions concerning viola-tion notices and forfeiture proceedings,and the requirements for environmetalimpact statements.

(c) Part 2 contains the Table of Fre-quency Allocations and special require-ments in international regulations,recommendations, agreements, andtreaties. This part also contains stand-ards and procedures concerning mar-keting of radio frequency devices, andfor obtaining equipment authorization.

(d) Part 13 contains information andrules for the licensing of commercialradio operators.

(e) Part 17 contains requirements forconstruction, marking and lighting ofantenna towers.

(f) Part 80 contains rules for the mar-itime services. Certain maritime fre-quencies are available for use by air-craft stations for distress and safety,public correspondence and operationalcommunications.

§ 87.5 Definitions.Aeronautical advisory station (unicom).

An aeronautical station used for advi-sory and civil defense communicationsprimarily with private aircraft sta-tions.

Aeronautical enroute station. An aero-nautical station which communicateswith aircraft stations in flight statusor with other aeronautical enroute sta-tions.

Aeronautical fixed service. Aradiocommunication service between


190

47 CFR Ch. I (10–1–97 Edition)§ 87.5

specified fixed points provided pri-marily for the safety of air navigationand for the regular, efficient and eco-nomical operation of air transport. Astation in this service is an aeronauti-cal fixed station.

Aeronautical Mobile Off-Route (OR)Service. An aeronautical mobile serviceintended for communications, includ-ing those relating to flight coordina-tion, primarily outside national orinternational civil air routes.(RR)

Aeronautical Mobile Route (R) Service.An aeronautical mobile service re-served for communications relating tosafety and regularity of flight, pri-marily along national or internationalcivil air routes.(RR)

Aeronautical Mobile-Satellite Off-Route(OR) Service. An aeronautical mobile-satellite service intended for commu-nications, including those relating toflight coordination, primarily outsidenational and international civil airroutes.(RR)

Aeronautical Mobile-Satellite Route (R)Service. An aeronautical mobile-sat-ellite service reserved for communica-tions relating to safety and regularityof flights, primarily along national orinternational civil air routes.(RR)

Aeronautical Mobile-Satellite Service. Amobile-satellite service in which mo-bile earth stations are located on boardaircraft.

Aeronautical mobile service. A mobileservice between aeronautical stationsand aircraft stations, or between air-craft stations, in which survival craftstations may also participate; emer-gency position-indicating radiobeaconstations may also participate in thisservice on designated distress andemergency frequencies.

Aeronautical multicom station. Anaeronautical station used to providecommunications to conduct the activi-ties being performed by, or directedfrom, private aircraft.

Aeronautical radionavigation service. Aradionavigation service intended forthe benefit and for the safe operationof aircraft.

Aeronautical search and rescue station.An aeronautical station for commu-nication with aircraft and other aero-nautical search and rescue stationspertaining to search and rescue activi-ties with aircraft.

Aeronautical station. A land station inthe aeronautical mobile service. In cer-tain instances an aeronautical stationmay be located, for example, on boardship or on a platform at sea.

Aeronautical utility mobile station. Amobile station used on airports forcommunications relating to vehicularground traffic.

Air carrier aircraft station. A mobilestation on board an aircraft which isengaged in, or essential to, the trans-portation of passengers or cargo forhire.

Aircraft earth station (AES). A mobileearth station in the aeronautical mo-bile-satellite service located on boardan aircraft.

Aircraft station. A mobile station inthe aeronautical mobile service otherthan a survival craft station, locatedon board an aircraft.

Airport. An area of land or water thatis used or intended to be used for thelanding and takeoff of aircraft, and in-cludes its buildings and facilities, ifany.

Airport control tower (control tower)station. An aeronautical station provid-ing communication between a controltower and aircraft.

Automatic weather observation station.A land station located at an airportand used to automatically transmitweather information to aircraft.

Aviation service organization. Anybusiness firm which maintains facili-ties at an airport for the purposes ofone or more of the following generalaviation activities: (a) Aircraft fueling;(b) aircraft services (e.g. parking, stor-age, tie-downs); (c) aircraft mainte-nance or sales; (d) electronics equip-ment maintenance or sales; (e) aircraftrental, air taxi service or flight in-structions; and (f) baggage and cargohandling, and other passenger orfreight services.

Aviation services. Radio-communica-tion services for the operation of air-craft. These services include aeronauti-cal fixed service, aeronautical mobileservice, aeronautical radiodetermin-ation service, and secondarily, the han-dling of public correspondence on fre-quencies in the maritime mobile andmaritime mobile satellite services toand from aircraft.


191


Aviation support station. An aero-nautical station used to coordinateaviation services with aircraft and tocommunicate with aircraft engaged inunique or specialized activities. (Seesubpart K)

Civil Air Patrol station. A station usedexclusively for communications of theCivil Air Patrol.

Emergency locator transmitter (ELT). Atransmitter of an aircraft or a survivalcraft actuated manually or automati-cally that is used as an alerting and lo-cating aid for survival purposes.

Emergency locator transmitter (ELT)test station. A land station used fortesting ELTs or for training in the useof ELTs.

Expendable Launch Vehicle (ELV). Abooster rocket that can be used onlyonce to launch a payload, such as amissile or space vehicle.

Flight test aircraft station. An aircraftstation used in the testing of aircraftor their major components.

Flight test land station. An aeronauti-cal station used in the testing of air-craft or their major components.

Glide path station. A radionavigationland station which provides verticalguidance to aircraft during approach tolanding.

Instrument landing system (ILS). Aradionavigation system which providesaircraft with horizontal and verticalguidance just before and during landingand, at certain fixed points, indicatesthe distance to the reference point oflanding.

Instrument landing system glide path. Asystem of vertical guidance embodiedin the instrument landing systemwhich indicates the vertical deviationof the aircraft from its optimum pathof descent.

Instrument landing system localizer. Asystem of horizontal guidance em-bodied in the instrument landing sys-tem which indicates the horizontal de-viation of the aircraft from its opti-mum path of descent along the axis ofthe runway or along some other pathwhen used as an offset.

Land station. A station in the mobileservice not intended to be used while inmotion.

Localizer station. A radionavigationland station which provides horizontal

guidance to aircraft with respect to arunway center line.

Marker beacon station. A radio-navigation land station in the aero-nautical radionavigation service whichemploys a marker beacon. A markerbeacon is a transmitter which radiatesvertically a distinctive pattern for pro-viding position information to aircraft.

Mean power (of a radio transmitter).The average power supplied to the an-tenna transmission line by a transmit-ter during an interval of time suffi-ciently long compared with the lowestfrequency encountered in the modula-tion taken under normal operatingconditions.

Microwave landing system. An instru-ment landing system operating in themicrowave spectrum that provides lat-eral and vertical guidance to aircrafthaving compatible avionics equipment.

Mobile service. A radiocommunicationservice between mobile and land sta-tions, or between mobile stations. Amobile station is intended to be usedwhile in motion or during halts at un-specified points.

Operational fixed station. A fixed sta-tion, not open to public correspond-ence, operated by and for the sole useof persons operating their ownradiocommunication facilities in thepublic safety, industrial, land transpor-tation, marine, or aviation services.

Peak envelope power (of a radio trans-mitter). The average power supplied tothe antenna transmission line by atransmitter during one radio frequencycycle at the crest of the modulation en-velope taken under normal operatingconditions.

Private aircraft station. A mobile sta-tion on board an aircraft not operatedas an air carrier. A station on board anair carrier aircraft weighing less than12,500 pounds maximum certified take-off gross weight may be licensed as aprivate aircraft station.

Racon station. A radionavigation landstation which employs a racon. A racon(radar beacon) is a transmitter-re-ceiver associated with a fixed naviga-tional mark, which when triggered by aradar, automatically returns a distinc-tive signal which can appear on the dis-play of the triggering radar, providingrange, bearing and identification infor-mation.


192

47 CFR Ch. I (10–1–97 Edition)§ 87.17

Radar. A radiodetermination systembased upon the comparison of referencesignals with radio signals reflected, orre-transmitted, from the position to bedetermined.

Radio altimeter. Radionavigationequipment, on board an aircraft orspacecraft, used to determine theheight of the aircraft or spacecraftabove the Earth’s surface or anothersurface.

Radiobeacon station. A station in theradionavigation service the emissionsof which are intended to enable a mo-bile station to determine its bearing ordirection in relation to the radiobeaconstation.

Radiodetermination service. Aradiocommuncation service which usesradiodetermination. Radiodetermin-ation is the determination of the posi-tion, velocity and/or other characteris-tics of an object, or the obtaining of in-formation relating to these param-eters, by means of the propagation ofradio waves. A station in this service iscalled a radiodetermination station.

Radiolocation service. A radio-determination service for the purposeof radiolocation. Radiolocation is theuse of radiodetermination for purposesother than those of radionavigation.

Radionavigation land test stations. Aradionavigation land station which isused to transmit information essentialto the testing and calibration of air-craft navigational aids, receivingequipment, and interrogators at pre-determined surface locations. TheMaintenance Test Facility (MTF) isused primarily to permit maintenancetesting by aircraft radio service per-sonnel. The Operational Test Facility(OTF) is used primarily to permit thepilot to check a radionavigation sys-tem aboard the aircraft prior to take-off.

Radionavigation service. A radio-determination service for the purposeof radionavigation. Radionavigation isthe use of radiodetermination for thepurpose of navigation, including ob-struction warning.

Re-usable launch vehicle (RLV). Abooster rocket that can be recoveredafter launch, refurbished and re-launched.

Surveillance radar station. A radio-navigation land station in the aero-

nautical radionavigation service em-ploying radar to display the presence ofaircraft within its range.

Survival craft station. A mobile sta-tion in the maritime or aeronauticalmobile service intended solely for sur-vival purposes and located on any life-boat, life raft or other survival equip-ment.

VHF Omni directional range station(VOR). A radionavigation land stationin the aeronautical radionavigationservice providing direct indication ofthe bearing (omni-bearing) of that sta-tion from an aircraft.

[53 FR 28940, Aug. 1, 1988, as amended at 54FR 11719, Mar. 22, 1989; 54 FR 49995, Dec. 4,1989; 55 FR 4175, Feb. 7, 1990; 57 FR 45749, Oct.5, 1992]

Subpart B—Applications andLicenses

§ 87.17 Scope.

This subpart contains the proceduresand requirements for the filing of ap-plications for radio station licenses inthe aviation services. Part 1 of theCommission’s rules contains the gen-eral rules of practice and procedure ap-plicable to proceedings before the Com-mission.

§ 87.18 Station license required.

(a) Except as noted in paragraph (b)of this section, stations in the aviationservice must be licensed by the FCC ei-ther individually or by fleet.

(b) An aircraft station is licensed byrule and does not need an individual li-cense issued by the FCC if the aircraftstation is not required by statute, trea-ty, or agreement to which the UnitedStates is signatory to carry a radio,and the aircraft station does not makeinternational flights or communica-tions. Even though an individual li-cense is not required, an aircraft sta-tion licensed by rule must be operatedin accordance with all applicable oper-ating requirements, procedures, andtechnical specifications found in thispart.

[61 FR 58011, Nov. 12, 1996]


193


§ 87.19 Basic eligibility.(a) General. Foreign governments or

their representatives cannot hold sta-tion licenses.

(b) Aeronautical enroute and aeronauti-cal fixed stations. The following personscannot hold an aeronautical enroute oran aeronautical fixed station license.

(1) Any alien or the representative ofany alien;

(2) Any corporation organized underthe laws of any foreign government;

(3) Any corporation of which morethan one-fifth of the capital stock isowned of record or voted by aliens ortheir representatives or by a foreigngovernment or its representative, or bya corporation organized under the lawsof a foreign country; or

(4) Any corporation directly or indi-rectly controlled by any other corpora-tion of which more than one-fourth ofthe capital stock is owned of record orvoted by aliens, their representatives,or by a foreign government or its rep-resentatives, or by any corporation or-ganized under the laws of a foreigncountry, if the Commission finds thatthe public interest will be served bythe refusal or revocation of such li-cense.

[53 FR 28940, Aug. 1, 1988, as amended at 61FR 55581, Oct. 28, 1996]

§ 87.21 Standard forms to be used.(a) Applications must be submitted

on prescribed forms which may be ob-tained from the Commission in Wash-ington, DC 20554 or from any of its fieldoffices.

(b) The following table indicates thecorrect standard form or other meansto be used when submitting an applica-tion:

Class of sta-tion Application for— Use—

Aircraft ........ New license ............. FCC Form 404.Fleet license (new) .. FCC Form 404.Modification of li-

cense.FCC Form 404.

Renewal of licensewith modification.

FCC Form 404.

Renewal of licensewithout modifica-tion.

FCC Form 405–B.

Temporary operatingauthority in con-junction with appli-cation for a new li-cense or modifica-tion of license.

FCC Form 404–A.

Class of sta-tion Application for— Use—

Transfer of control ofcorporation.

FCC Form 703.

Special Temporaryauthority.

Letter/Telegram.

Name or addresschange.

Letter.

Ground ....... New license ............. FCC Form 406.Modification of li-

cense.FCC Form 406.

Renewal of licensewith modification.

FCC Form 406.

Renewal of licensewithout modifica-tion.

FCC Form 452–R.

Assignment of li-cense.

FCC Form 1046 and406.

Transfer of control ofcorporation.

FCC Form 703.

Special TemporaryAuthority.

Letter/Telegram.

Civil Air Pa-trol.

New license ............. FCC Form 480.

Modification of li-cense.

FCC Form 480.

Renewal of license .. FCC Form 480.

[53 FR 28940, Aug. 1, 1988, as amended at 56FR 64715, Dec. 12, 1991]

§ 87.23 Supplemental information re-quired.

(a) To minimize harmful interferenceat the National Radio Astronomy Ob-servatory site at Green Bank, Poca-hontas County, WV, and at the NavalRadio Research Observatory site atSugar Grove, Pendleton County, WV,an applicant for a new station license(other than mobile, temporary base,temporary fixed or Civil Air Patrol), orfor modification of an existing licenseto change the frequency, power, an-tenna location, height or directivitywithin the area bounded by 39′15′ N. onthe north, 78′30′ W. on the east, 37′30′ Non the south and 80′30′ W on the west,must first notify the Director, Na-tional Radio Astronomy Observatory,Attn: Interference Office, Post OfficeBox No. 2, Green Bank, WV 24944, inwriting, of the geographical coordi-nates of the antenna, antenna height,antenna directivity, frequency, emis-sion and power. The application to theCommission must show the date notifi-cation was made to the Observatory.The Commission will allow twenty (20)days after receipt of its copy of the no-tification for comments or objections.If a timely response is received, theCommission will consider the com-ments or objections.


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47 CFR Ch. I (10–1–97 Edition)§ 87.25

(b) Geographical coordinates of Com-mission facilities which require protec-tion are listed in § 0.121(c). Applicationsfor stations (except mobile stations)which will be located within 80 km (50miles) of the referenced coordinates areexamined to determine extent of pos-sible interference. A clause protectingthe monitoring station may be addedto the station license.

(c) Each application for a station li-cense to operate in the vicinity ofBoulder County, CO, under this partmust give due consideration, prior tofiling applications, to the need to pro-tect the Table Mountain Radio Receiv-ing Zone from harmful interference.These are the Research Laboratories ofthe Department of Commerce, BoulderCounty, CO. To prevent degradation ofthe present ambient radio signal levelat the site, the Department of Com-merce seeks to ensure that fieldstrength at 40°07′50″ N latitude, 105°14′40″ W longitude, resulting from newassignments (other than mobile sta-tions) or from the modification or relo-cation of the existing facilities do notexceed the following values:

Frequency range

Fieldstrength

(mV/m) inauthor-

izedband-

width ofservice

Powerflux den-

sity 1

(dBW/m 2) inauthor-

izedband-

width ofservice

Below 540 kHz .................................. 10 ¥65.8540 to 1600 kHz ................................ 20 ¥59.81.6 to 470 MHz .................................. 10 2¥65.8470 to 890 MHz ................................. 30 2¥56.2Above 890 MHz ................................. 1 2¥85.8

1 Equivalent values of power flux density are calculated as-suming a free-space characteristic impedence of 376.7 (ap-proximately 120 pi) ohms.

2 Space stations shall conform to the power flux density lim-its at the earth’s surface specified in appropriate parts of theCommission’s rules, but in no case should exceed the abovelevels in any 4 kHz band for all angles of arrival.

(d) Each applicant is responsible fordetermining whether proposals for anew or modified station requireenvionmental information. Applicantsshould refer to § 1.1307 to identify thoseactions for which environmental infor-mation must be submitted.

[53 FR 28940, Aug. 1, 1988, as amended at 54FR 11719, Mar. 22, 1989]

§ 87.25 Filing of applications.Rules about the filing of applications

for radio station licenses are containedin this section.

(a) Each application must specify anaddress in the United States to be usedby the Commission in serving docu-ments or directing correspondence tothe licensee. Otherwise the addresscontained in the licensee’s most recentnotification will be used for this pur-pose. Failure to answer Commissioncorrespondence can result in revoca-tion of the license.

(b) An original of each applicationmust be filed with the Commission,Gettysburg, PA 17326, unless otherwisenoted on the application form. Applica-tions requiring fees as set forth at part1, subpart G of this chapter must befiled in accordance with § 0.401(b) of therules.

(c) One application may be submittedfor the total number of aircraft sta-tions in the fleet (fleet license).

(d) One application for aeronauticalland station license may be submittedfor the total number of stations in thefleet.

(e) One application for modificationor transfer of control may be submit-ted for two or more stations when theindividual stations are clearly identi-fied and the following elements are thesame for all existing or requested sta-tion licenses involved:

(1) Applicant;(2) Specific details of request;(3) Rule part.(f) One application must be submit-

ted for each Civil Air Patrol wing. Theapplication must show the total num-ber of transmitters to be authorized.The wing need not notify the Commis-sion each time the number of transmit-ters is altered. Upon renewal, the wingmust notify the Commission of anychange in the total number of trans-mitters.


§ 87.27 License term.(a) Licenses for aircraft stations will

normally be issued for a term of tenyears from the date of original issu-ance, major modification or renewal.Licensees may apply for renewal of the


195


station license up to ninety (90) daysafter the date the license expires.

(b) Licenses other than aircraft sta-tions in the aviation services will nor-mally be issued for a term of five yearsfrom the date of original issuance,major modification, or renewal. Li-censees, other than Aeronautical Advi-sory (unicom) stations licensed under§ 87.215(b), Aeronautical Fixed, Aero-nautical Enroute, and Airport ControlTower stations, may apply for renewalof the station license up to ninety (90)days after the date the license expires.

(c) Licenses for developmental sta-tions will be issued for a period not toexceed one year and are subject tochange or to cancellation by the Com-mission at any time, upon reasonablenotice but without a hearing.

[53 FR 28940, Aug. 1, 1988, as amended at 58FR 68062, Dec. 23, 1993; 62 FR 40308, July 28,1997]

§ 87.29 Partial grant of application.Whenever the Commission, without a

hearing, grants an application in partor with any privileges, terms, or condi-tions other than those requested, theaction will be considered as a grant ofthe application unless the applicant,within 30 days from the date on whichsuch grant is made, or from its effec-tive date if a later day is specified, fileswith the Commission a written protest,rejecting the grant as made. Upon re-ceipt of such protest, the Commissionwill vacate its original action upon theapplication and, if necessary, set theapplication for hearing.

§ 87.31 Changes during license term.The following table indicates the re-

quired action for changes made duringthe license term:

Type of change Required action

Mailing address ..................... Written notice to FCC.Gettysburg, PA 17326.

Name of licensee (withoutchange in ownership, con-trol or corporate structure).

Written notice to FCC.Gettysburg, PA 17326.

Transfer of control of a cor-poration.

Use FCC Form 703.

Assignment of a radio stationlicense (except aircraft sta-tion license).

Use FCC Form 1046 and406.

Addition of transmitting equip-ment on a frequency, fre-quency band or with emis-sion types not authorizedon present license.

Use FCC Form 404 (aircraft).Use FCC Form 406 (land).Use FCC Form 480 (C.A.P.).

Type of change Required action

Addition or replacement oftransmitting equipment ona frequency or frequencyband with emission typesauthorized on present li-cense.

None.

Addition of survival craft sta-tion.

None

§ 87.33 Transfer of aircraft station li-cense prohibited.

An aircraft station license cannot beassigned. If the aircraft ownership istransferred, the previous license mustbe returned to the Commission. Thenew owner must file for a new license.

§ 87.35 Cancellation of license.When a station permanently discon-

tinues operation, the license must bereturned to the Commission, Gettys-burg, PA 17326.

§ 87.37 Developmental license.This section contains rules about the

licensing of developmental operationssubject to this part.

(a) Showing required. Each applicationfor a developmental license must be ac-companied by a letter showing that:

(1) The applicant has an organizedplan of development leading to a spe-cific objective;

(2) A point has been reached in theprogram where actual transmission byradio is essential;

(3) The program has reasonable prom-ise of substantial contribution to theuse of radio;

(4) The program will be conducted byqualified personnel;

(5) The applicant is legally qualifiedand possesses technical facilities forconduct of the program as proposed;

(6) The public interest, convenienceand necessity will be served by the pro-posed operation.

(b) Signature and statement of under-standing. The showing must be signedby the applicant.

(c) Assignable frequencies. Devel-opmental stations may be authorizedto use frequencies available for theservice and class of station proposed.The number of frequencies assignedwill depend upon the specific require-ments of the developmental programand the number of frequencies avail-able.


196

47 CFR Ch. I (10–1–97 Edition)§ 87.39

(d) Developmental program. (1) The de-velopmental program as described bythe applicant must be substantiallyfollowed.

(2) Where some phases of the devel-opmental program are not covered bythe general rules of the Commissionand the rules in this part, the Commis-sion may specify supplemental or addi-tional requirements or conditions asconsidered necessary in the public in-terest, convenience or necessity.

(3) The Commission may, from timeto time, require a station engaged indevelopmental work to conduct specialtests which are reasonable and desir-able to the authorized developmentalprogram.

(e) Use of developmental stations. (1)Developmental stations must conformto all applicable technical and operat-ing requirements contained in thispart, unless a waiver is specificallyprovided in the station license.

(2) Communication with any stationof a country other than the UnitedStates is prohibited unless specificallyprovided in the station license.

(3) The operation of a developmentalstation must not cause harmful inter-ference to stations regularly author-ized to use the frequency.

(f) Report of operation required. A re-port on the results of the developmen-tal program must be filed within 60days of the expiration of the license. Areport must accompany a request forrenewal of the license. Matters whichthe applicant does not wish to disclosepublicly may be so labeled; they will beused solely for the Commission’s infor-mation. However, public disclosure isgoverned by § 0.467 of the Commission’srules. The report must include the fol-lowing:

(1) Results of operation to date.(2) Analysis of the results obtained.(3) Copies of any published reports.(4) Need for continuation of the pro-

gram.(5) Number of hours of operation on

each authorized frequency during theterm of the license to the date of thereport.


§ 87.39 Equipment acceptable for li-censing.

Transmitters listed in this part mustbe type accepted for a particular use bythe Commission based upon technicalrequirements contained in subpart D ofthis part.

§ 87.41 Frequencies.

(a) Applicant responsibilities. The ap-plicant must propose frequencies to beused by the station consistent with theapplicant’s eligibility, the proposed op-eration and the frequencies availablefor assignment. Applicants must co-operate in the selection and use of fre-quencies in order to minimize inter-ference and obtain the most effectiveuse of stations. See subpart E and theappropriate subpart applicable to theclass of station being considered.

(b) Licensing limitations. Frequenciesare available for assignment to sta-tions on a shared basis only and willnot be assigned for the exclusive use ofany licensee. The use of any assignedfrequency may be restricted to one ormore geographical areas.

(c) Government frequencies. Fre-quencies allocated exclusively to fed-eral government radio stations may belicensed. The applicant for a govern-ment frequency must provide a satis-factory showing that such assignmentis required for inter-communicationwith government stations or requiredfor coordination with activities of thefederal government. The Commissionwill coordinate with the appropriategovernment agency before a govern-ment frequency is assigned.

(d) Assigned frequency. The frequencycoinciding with the center of an au-thorized bandwidth of emission mustbe specified as the assigned frequency.For single sideband emission, the car-rier frequency must also be specified.

§ 87.43 Operation during emergency.

A station may be used for emergencycommunications in a manner otherthan that specified in the station li-cense or in the operating rules whennormal communication facilities aredisrupted. The Commission may orderthe discontinuance of any such emer-gency service.


197


§ 87.45 Time in which station is placedin operation.

This section applies to unicom sta-tions and radionavigation land sta-tions, excluding radionavigation landtest stations. In those cases in which anew or modified license is issued, if thestation or modifications authorizedhave not been placed in operation with-in eight months from the date of thegrant, the license becomes invalid andmust be returned to the Commissionunless the licensee shows good causewhy notification was not made. The li-censee must notify the Commission inwriting when the station is placed inoperation.

§ 87.47 Application for a portable air-craft station license.

A person may apply for a portableaircraft radio station license if theneed exists to operate the same stationon more than one U.S. aircraft.

§ 87.51 Aircraft earth station commis-sioning.

(a) Aircraft earth stations which re-quire commissioning to use a privatelyowned satellite system must submitFCC Form 404 to the Commission be-fore transmitting on any satellite fre-quency bands allocated for aeronauti-cal mobile-satellite communications.

(b) Aircraft earth stations authorizedto operate in the Inmarsat space seg-ment must display the Commission li-cense together with the commissioningcertificate issued by Inmarsat. Not-withstanding the requirements of thisparagraph, aircraft earth stations mayoperate in the Inmarsat space segmentwithout an Inmarsat-issued commis-sioning certificate if written approvalis obtained from Inmarsat in additionto the license from the Commission.

[57 FR 45749, Oct. 5, 1992]

Subpart C—OperatingRequirements and Procedures

OPERATING REQUIREMENTS

§ 87.69 Maintenance tests.The licensee may make routine

maintenance tests on equipment otherthan emergency locator transmitters ifthere is no interference with the com-

munications of any other station. Pro-cedures for conducting tests on emer-gency locator transmitters are con-tained in subpart F.

§ 87.71 Frequency measurements.A licensed operator must measure

the operating frequencies of all land-based transmitters at the followingtimes:

(a) When the transmitter is origi-nally installed;

(b) When any change or adjustment ismade in the transmitter which may af-fect an operating frequency; or

(c) When an operating frequency hasshifted beyond tolerance.

§ 87.73 Transmitter adjustments andtests.

A general radiotelephone operatormust directly supervise and be respon-sible for all transmitter adjustments ortests during installation, servicing ormaintenance of a radio station. A gen-eral radiotelephone operator must beresponsible for the proper functioningof the station equipment.

§ 87.75 Maintenance of antenna struc-ture marking and control equip-ment.

The owner of each antenna structurerequired to be painted and/or illumi-nated under the provisions of Section303(q) of the Communications Act of1934, as amended, shall operate andmaintain the antenna structure paint-ing and lighting in accordance withpart 17 of this chapter. In the event ofdefault by the owner, each licensee orpermittee shall be individually respon-sible for conforming to the require-ments pertaining to antenna structurepainting and lighting.

[61 FR 4368, Feb. 6, 1996]

§ 87.77 Availability for inspections.The licensee must make the station

and its records available for inspectionupon request.

§ 87.79 Answer to notice of violation.(a) Any person who receives an offi-

cial notice of violation of the Commu-nications Act, any legislative act, ex-ecutive order, treaty to which the U.S.is a party, terms of a station or opera-tor license, or the Commission’s rules


198

47 CFR Ch. I (10–1–97 Edition)§ 87.87

must send a written answer, in dupli-cate, to the office which originated thenotice, within 10 days of receipt. If thelicensee cannot acknowledge withinthe allotted period due to unavoidablecircumstances, an answer must begiven at the earliest practicable datewith a satisfactory explanation of thedelay.

(b) The answer to each notice mustbe complete in itself. The answer mustcontain a full expalantion of the inci-dent involved and must give the actiontaken to prevent a recurrence of theviolation. If the notice relates to oper-ator errors, the answer must give thename and license number of the opera-tor on duty.

RADIO OPERATOR REQUIREMENTS

§ 87.87 Classification of operator li-censes and endorsements.

(a) Commercial radio operator li-censes issued by the Commission areclassified in accordance with the RadioRegulations of the International Tele-communication Union.

(b) The following licenses are issuedby the Commission. International clas-sification, if different from the licensename, is given in parentheses. The li-censes and their alphanumeric designa-tor are listed in descending order.

(1) T–1 First Class RadiotelegraphOperator’s Certificate

(2) T–2 Second Class RadiotelegraphOperator’s Certificate

(3) G General Radiotelephone Opera-tor Licenes (radiotelephone operator’sgeneral certificate)

(4) T–3 Third Class RadiotelegraphOperator’s Certificate (radiotelegraphoperator’s special certificate)

(5) MP Marine Radio Operator Permit(radiotelephone operator’s restrictedcertificate)

(6) RP Restricted Radiotelephone Op-erator Permit (radiotelephone opera-tor’s restricted certificate)

§ 87.89 Minimum operator require-ments.

(a) A station operator must hold acommercial radio operator license orpermit, except as listed in paragraph(d).

(b) The minimum operator license orpermit required for operation of eachspecific classification is:

MINIMUM OPERATOR LICENSE OR PERMIT

Land stations, all classes

—All frequencies except VHF teleph-ony transmitters providing domes-tic service ............................................RP

Aircraft stations, all classes

—Frequencies below 30 MHz allocatedexclusively to aeronautical mobileservices ................................................RP

—Frequencies below 30 MHz not allo-cated exclusively to aeronauticalmobile services ....................MP or higher

—Frequencies above 30 MHz not allo-cated exclusively to aeronauticalmobile services and assigned forinternational use .................MP or higher

—Frequencies above 30 MHz not as-signed for international use ..............none

—Frequencies not used solely for tele-phone or exceeding 250 watts car-rier power or 1000 watts peak enve-lope power...............................G or higher

(c) The operator of a telephony sta-tion must directly supervise and be re-sponsible for any other person whotransmits from the station, and mustensure that such communications arein accordance with the station license.

(d) No operator license is required to:(1) Operate an aircraft radar set,

radio altimeter, transponder or otheraircraft automatic radionavigationtransmitter by flight personnel;

(2) Test an emergency locator trans-mitter or a survival craft station usedsolely for survival purposes;

(3) Operate an aeronautical enroutestation which automatically transmitsdigital communications to aircraft sta-tions;

(4) Operate a VHF telephony trans-mitter providing domestic service orused on domestic flights.

§ 87.91 Operation of transmitter con-trols.

The holder of a marine radio operatorpermit or a restricted radiotelephoneoperator permit must perform onlytransmitter operations which are con-trolled by external switches. These op-erators must not perform any internaladjustment of transmitter frequencydetermining elements. Further, thestability of the transmitter frequenciesat a station operated by these opera-tors must be maintained by the trans-mitter itself. When using an aircraft


199


radio station on maritime mobile serv-ice frequencies the carrier power of thetransmitter must not exceed 250 watts(emission A3E) or 1000 watts (emissionR3E, H3E, or J3E).

OPERATING PROCEDURES

§ 87.103 Posting station license.(a) Stations at fixed locations. The li-

cense or a photocopy must be posted orretained in the station’s permanentrecords.

(b) Aircraft radio stations. The licensemust be either posted in the aircraft orkept with the aircraft registration cer-tificate. If a single authorization cov-ers a fleet of aircraft, a copy of the li-cense must be either posted in each air-craft or kept with each aircraft reg-istration certificate.

(c) Aeronautical mobile stations. The li-cense must be retained as a permanentpart of the station records.


§ 87.105 Availability of operator permitor license.

All operator permits or licenses mustbe readily available for inspection.

§ 87.107 Station identification.(a) Aircraft station. Identify by one of

the following means:(1) Aircraft radio station call sign.(2) Assigned FCC control number (as-

signed to ultralight aircraft).(3) The type of aircraft followed by

the characters of the registrationmarking (‘‘N’’ number) of the aircraft,omitting the prefix letter ‘‘N’’. Whencommunication is initiated by aground station, an aircraft station mayuse the type of aircraft followed by thelast three characters of the registra-tion marking.

(4) The FAA assigned radiotelephonydesignator of the aircraft operating or-ganization followed by the flight iden-tification number.

(5) An aircraft identification ap-proved by the FAA for use by aircraftstations participating in an organizedflying activity of short duration.

(b) Land and fixed stations. Identifyby means of radio station call sign, itslocation, its assigned FAA identifier,the name of the city area or airport

which it serves, or any additional iden-tification required. An aeronauticalenroute station which is part of amultistation network may also beidentified by the location of its controlpoint.

(c) Survival craft station. Identify bytransmitting a reference to its parentaircraft. No identification is requiredwhen distress signals are transmittedautomatically. Transmissions otherthan distress or emergency signals,such as equipment testing or adjust-ment, must be identified by the callsign or by the registration marking ofthe parent aircraft followed by a singledigit other than 0 or 1.

(d) Exempted station. The followingtypes of stations are exempted fromthe use of a call sign: Airborne weatherradar, radio altimeter, air traffic con-trol transponder, distance measuringequipment, collision avoidance equip-ment, racon, radio relay, radio-navigation land test station (MTF),and automatically controlled aero-nautical enroute stations.

§ 87.109 Station logs.

A station at a fixed location in theinternational aeronautical mobile serv-ice must maintain a written or auto-matic log in accordance with Para-graph 3.5, Volume II, Annex 10 of theICAO Convention.

§ 87.111 Suspension or discontinuanceof operation.

The licensee of any airport controltower station or radionavigation landstation must notify the nearest FAAregional office upon the temporary sus-pension or permanent discontinuanceof the station. The FAA center must benotified again when service resumes.

[54 FR 11720, Mar. 22, 1989]

Subpart D—TechnicalRequirements

§ 87.131 Power and emissions.

The following table lists authorizedemissions and maximum power. Powermust be determined by direct measure-ment.


200

47 CFR Ch. I (10–1–97 Edition)§ 87.133

Class of station Frequency band/frequency Authorized emission(s) 9 Maximum power 1

Aeronautical advisory ................................ VHF ..................... A3E ........................................................... 10 watts.Aeronautical multicom ............................... VHF ..................... A3E ........................................................... 10 watts.Aeronautical enroute and aeronautical

fixed.HF ........................ R3E, H3E, J3E, J7B, H2B ........................ 6 kw.

HF ........................ A1A, F1B, J2A, J2B .................................. 1.5 kw.VHF ..................... A3E, A9W ................................................. 200 watts.2

Aeronautical search and rescue ................ VHF .....................HF ........................

A3E ...........................................................R3E, H3E, J3E .........................................

10 watts.100 watts.

Operational fixed ........................................ VHF ..................... G3E, F2D .................................................. 30 watts.Flight test land ........................................... VHF ..................... A3E ........................................................... 200 watts.

UHF ..................... F2D, F9D, F7D ......................................... 25 watts.3HF ........................ H2B, J3E, J7D, J9W ................................. 6.0 kw.

Aviation support ......................................... VHF ..................... A3E ........................................................... 50 watts.Airport control tower .................................. VHF ..................... A3E ........................................................... 50 watts.

Below 400 kHz .... A3E ........................................................... 15 watts.Aeronautical utility mobile .......................... VHF ..................... A3E ........................................................... 10 watts.Radionavigation land test .......................... 108.150 MHz ....... A9W .......................................................... 1 milliwatt.

334.550 MHz ....... A1N ........................................................... 1 milliwatt.Other VHF ........... M1A, XXA, A1A, A1N, A2A, A2D, A9W ... 1 watt.Other UHF ........... M1A, XXA, A1A, A1N, A2A, A2D, A9W ... 1 watt.5031.0 MHz ......... F7D ........................................................... 1 watt.

Radionavigation land ................................. Various 4 .............. Various 4 .................................................... Various.4

Aeronautical Frequencies

Aircraft (Communication) ........................... UHF ..................... F2D, F9D, F7D ......................................... 25 watts.VHF ..................... A3E, A9W ................................................. 55 watts.HF ........................ R3E, H3E, J3E, J7B, H2B, J7D, J9W ...... 400 watts.HF ........................ A1A, F1B, J2A, J2B .................................. 100 watts.

Marine Frequencies 5

156.300 MHz ....... G3E ........................................................... 5 watts.156.375 MHz ....... G3E ........................................................... 5 watts.156.400 MHz ....... G3E ........................................................... 5 watts.156.425 MHz ....... G3E ........................................................... 5 watts.156.450 MHz ....... G3E ........................................................... 5 watts.156.625 MHz ....... G3E ........................................................... 5 watts.156.800 MHz ....... G3E ........................................................... 5 watts.156.900 MHz ....... G3E ........................................................... 5 watts.157.425 MHz ....... G3E ........................................................... 5 watts.HF 6 ..................... R3E, H3E, J3E, J2B, F1B, A3E ............... 1000 watts.

250 watts.MF 6 ..................... R3E, H3E, J3E, J2B, F1B ........................ 1000 watts.HF 6 ..................... A3E ........................................................... 250 watts.

(Radionavigation) ....................................... Various 7 .............. Various 7 .................................................... Various.7Aircraft earth .............................................. UHF ..................... G1D, G1E, G1W ....................................... 60 watts.8

1 The power is measured at the transmitter output terminals and the type of power is determined according to the emissiondesignator as follows:

(i) Mean power (pY) for amplitude modulated emissions and transmitting both sidebands using unmodulated full carrier.(ii) Peak envelope power (pX) for all emission designators other than those referred to in paragraph (i) of this note.2 Power and antenna height are restricted to the minimum necessary to achieve the required service.3 Transmitter power may be increased to overcome line and duplexer losses but must not exceed 25 watts delivered to the an-

tenna.4 Frequency, emission, and maximum power will be determined after coordination with appropriate Government agencies.5 To be used with airborne marine equipment type accepted for part 80 (ship) and used in accordance with part 87.6 Applicable onIy to marine frequencies used for public correspondence.7 Frequency, emission, and maximum power will be determined by appropriate standards during the type acceptance process.8 Power may not exceed 60 watts per carrier. The maximum EIRP may not exceed 2000 watts per carrier.9 Excludes automatic link establishment.

[54 FR 11720, Mar. 22, 1989, as amended at 57 FR 45749, Oct. 5, 1992; 62 FR 40308, July 28, 1997]

§ 87.133 Frequency stability.

(a) Except as provided in paragraphs(c), (d), and (f) of this section, the car-rier frequency of each station must bemaintained within these tolerances:

Frequency band (lower limit exclu-sive, upper limit inclusive), and cat-

egories of stations

Toler-ance 1

Toler-ance 2

(1) Band-9 to 535 kHz:Aeronautical stations ...................... 100 100Aircraft stations .............................. 200 100Survival craft stations on 500 kHz 5,000 20 Hz 3


201



egories of stations

Toler-ance 1

Toler-ance 2

Radionavigation stations ................ 100 100(2) Band-1605 to 4000 kHz:

Aeronautical fixed stations:Power 200 W or less .................. 100 100 8

Power above 200 W ................... 50 50 8

Aeronautical stations:Power 200 W or less .................. 100 7 100 7, 8

Power above 200 W ................... 50 7 50 7, 8

Aircraft stations .............................. 100 7 100 7

Survival craft stations on 2182 kHz 200 20 Hz 3

(3) Band-4 to 29.7 MHz:Aeronautical fixed stations:

Power 500 W or less .................. 50Power above 500 W ................... 15

Single-sideband and Independent-sideband emission:Power 500 W or less .................. 50 HzPower above 500 W ................... 20 Hz

Class F1B emissions ..................... 10 HzOther classes of emission:

Power 500 W or less .................. 20Power above 500 W ................... 10

Aeronautical stations:Power 500 W or less .................. 7 100 100 7

Power above 500 W ................... 7 50 50 7

Aircraft stations .............................. 7 100 100 7

Survival craft stations on 8364 kHz 200 50 Hz 3

(4) Band-29.7 to 100 MHz:Aeronautical fixed stations:

Power 200 W or less .................. 50Power above 200 W ................... 30Power 50 W or less .................... 30Power above 50 W ..................... 20

Operational fixed stations:73–74.6 MHz (Power 50 W or

less).50 30

73–74.6 MHz (Power above 50W).

20 20

72–73.0 MHz and 75.4–76.0MHz.

5 5

Radionavigation stations ................ 100 50(5) Band-100 to 137 MHz:

Aeronautical stations ...................... 4 50 20Emergency locator transmitter test

stations.50 50

Survival craft stations on 121.5MHz.

50 50

Emergency locator stations ........... 50 50Aircraft and other mobile stations

in the Aviation Services.50 5 30 10

Radionavigation stations ................ 20 20(6) Band-137 to 470MHz:

Aeronautical stations ...................... 50 20Survival craft stations on 243 MHz 50 50Aircraft stations .............................. 50 5 30 10

Radionavigation stations ................ 50 50Emergency locator transmitters on

406 MHz.N/A 5

(7) Band-470 to 2450 MHz:Aeronautical stations ...................... 100 20Aircraft stations .............................. 100 20Aircraft earth station ....................... 320 Hz 11

Radionavigation stations:470–960 MHz ............................. 500 500960–1215 MHz ........................... 20 201215–2450 MHz ......................... 500 500

(8) Band-2450 to 10500 MHz:Radionavigation stations ................ 6, 9 1250 1250 6, 9


egories of stations

Toler-ance 1

Toler-ance 2

(9) Band-10.5 GHz to 40 GHz:Radionavigation stations ................ 5000 5000

1 This tolerance is the maximum permitted until January 1,1990, for transmitters installed before January 2, 1985, andused at the same installation. Tolerance is indicated in partsin 10 6 unless shown as Hertz (Hz).

2 This tolerance is the maximum permitted after January 1,1985 for new and replacement transmitters and to all transmit-ters after January 1, 1990. Tolerance is indicated in parts in10 6 unless shown as Hertz (Hz).

3 For transmitters first type accepted or type approved afterNovember 30, 1977.

4 The tolerance for transmitters type accepted between Jan-uary 1, 1966, and January 1, 1974, is 30 parts in 10 6. Thetolerance for transmitters type accepted after January 1, 1974,and stations using offset carrier techniques is 20 parts in 10 6.

5 The tolerance for transmitters type accepted after January1, 1974, is 30 parts in 10 6.

6 In the 5000 to 5250 MHz band, the FAA requires a toler-ance of ±10 kHz for Microwave Landing System stationswhich are to be a part of the National Airspace System (FAR171).

7 For single-sideband transmitters operating in the fre-quency bands 1605–4000 kHz and 4–29.7 MHz which are al-located exclusively to the Aeronautical Mobile (R) Service, thetolerance is: Aeronautical stations, 10 Hz; aircraft stations, 20Hz.

8 For single-sideband radiotelephone transmitters the toler-ance is: In the bands 1605–4000 kHz and 4–29.7 MHz forpeak envelope powers of 200 W or less and 500 W or less,respectively, 50 Hz; in the bands 1605–4000 kHz and 4–29.7MHz for peak envelope powers above 200 W and 500 W, re-spectively, 20 Hz.

9 Where specific frequencies are not assigned to radar sta-tions, the bandwidth occupied by the emissions of such sta-tions must be maintained within the band allocated to theservice and the indicated tolerance does not apply.

10 Until January 1, 1997, the maximum frequency tolerancefor transmitters with 50 kHz channel spacing installed beforeJanuary 2, 1985, is 50 parts in 10 6.

11 For purposes of type acceptance, a tolerance of 160 Hzapplies to the reference oscillator of the AES transmitter. Thisis a bench test.

(b) The power shown in paragraph (a)of this section is the peak envelopepower for single-sideband transmittersand the mean power for all other trans-mitters.

(c) For single-sideband transmitters,the tolerance is:

(1) All aeronautical stations on landother than Civil Air Patrol...............10 Hz

(2) All aircraft stations other thanCivil Air Patrol.................................20 Hz

(3) Civil Air Patrol Stations ...................50 Hz

(d) For radar transmitters, exceptnon-pulse signal radio altimeters, thefrequency at which maximum emissionoccurs must be within the authorizedfrequency band and must not be closerthan 1.5/T MHz to the upper and lowerlimits of the authorized bandwidth,where T is the pulse duration in micro-seconds.

(e) The Commission may authorizetolerances other than those specified inthis section upon a satisfactory show-ing of need.


202

47 CFR Ch. I (10–1–97 Edition)§ 87.135

(f) The carrier frequency tolerance oftransmitters operating in the 1435–1535MHz and 2310–2390 MHz bands manufac-tured before January 2, 1985, is 0.003percent. The carrier frequency toler-ance of transmitters operating in the1435–1535 MHz and 2310–2390 MHz bandsmanufactured after January 1, 1985, is0.002 percent. After January 1, 1990, thecarrier frequency tolerance of alltransmitters operating in the 1435–1535MHz and 2310–2390 MHz bands is 0.002percent.

[53 FR 28940, Aug. 1, 1988, as amended at 56FR 38084, Aug. 12, 1991; 57 FR 45749, Oct. 5,1992; 58 FR 31027, May 26, 1993]

§ 87.135 Bandwidth of emission.(a) Occupied bandwidth is the width

of a frequency band such that, below

the lower and above the upper fre-quency limits, the mean powers emit-ted are each equal to 0.5 percent of thetotal mean power of a given emission.

(b) The authorized bandwidth is themaximum occupied bandwidth author-ized to be used by a station.

(c) The necessary bandwidth for agiven class of emission is the width ofthe frequency band which is just suffi-cient to ensure the transmission of in-formation at the rate and with thequality required under specified condi-tions.

§ 87.137 Types of emission.

(a) The assignable emissions, cor-responding emission designators andauthorized bandwidths are as follows:

Class of emission Emission designa-tor

Authorized bandwidth (kilohertz)

Below 50MHz

Above 50MHz

Fre-quen-cy de-

vi-ation

A1A 1 ...................................................................................................... 100HA1A 0.25A1N ........................................................................................................ 300HA1N 0.75A2A ........................................................................................................ 2K04A2A 2.74 50A2D ........................................................................................................ 6K0A2D 50A2D 5 ...................................................................................................... 13K0A2D .................... 50 ..........A3E 2 ...................................................................................................... 6K00A3E 3 50A3E ........................................................................................................ 3K20A3E 15 15 25A3X 4 ...................................................................................................... 3K20A3X 25A9W 5 ..................................................................................................... 13K0A9W 25F1B 1 ...................................................................................................... 1K70F1B 1.7F1B 1 ...................................................................................................... 2K40F1B 2.5F2D ........................................................................................................ 5M0F2D (9)F3E 6 ...................................................................................................... 16K0F3E 20 5F3E 7 ...................................................................................................... 36K0F3E 40 15F7D 8 ...................................................................................................... 5M0F7D (9)F9D ........................................................................................................ 5M0F9D (9)G1D ....................................................................................................... 16K0G1D 20kHzG1D 16 .................................................................................................... 21K0G1D 25G1E 16 .................................................................................................... 21K0G1E 25G1W 16 ................................................................................................... 21K0G1W 25G3E 6 ..................................................................................................... 16K0G3E 20 5H2B 10 11 ................................................................................................ 2K80H2B 3.0H3E 11 12 ................................................................................................ 2K80H3E 3.0J2A 1 ...................................................................................................... 100HJ2A 0.25J2B 1 ...................................................................................................... 1K70J2B 1.7

2K40J2B 2.5J3E 11 12 ................................................................................................. 2K80J3E 3.0J7B 11 ..................................................................................................... 2K80J7B 3.0J7D ........................................................................................................ 5M0J7D (9)J9W 11 .................................................................................................... 2K80J9W 3.0M1A ....................................................................................................... 620HM1ANON ....................................................................................................... NON None 15

PON 13 ................................................................................................... (9) (9)R3E 11 12 ................................................................................................ 2K80R3E 3.0XXA 14 .................................................................................................... 1K12XXA 2.74

NOTES:1 A1A, F1B, J2A and J2B are permitted provided they do not cause harmful interference to H2B, J3E, J7B and J9W.2 For use with an authorized bandwidth of 8.0 kilohertz at radiobeacon stations. A3E will not be authorized:(i) At existing radiobeacon stations that are not authorized to use A3 and at new radiobeacon stations unless specifically rec-

ommended by the FAA for safety purposes.(ii) At existing radiobeacon stations currently authorized to use A3, subsequent to January 1, 1990, unless specifically rec-

ommended by the FAA for safety purposes.3 In the band 117.975–136 MHz, the authorized bandwidth is 25 kHz for transmitters type accepted after January 1, 1974.


203


4 Applicable only to Survival Craft Stations and to the emergency locator transmitters and emergency locator transmitter teststations employing modulation in accordance with that specified in § 87.141 of the Rules. The specified bandwidth and modula-tion requirements shall apply to emergency locator transmitters for which type acceptance is granted after October 21, 1973.

5 This emission may be authorized for audio frequency shift keying and phase shift keying for digital data links on any fre-quency listed in § 87.263(a)(1), § 87.263(a)(3) or § 87.263(a)(5). 13K0A2D emission may be authorized on frequencies not usedfor voice communications. If the channel is used for voice communications, 13K0A9W emission may be authorized, provided thedata is multiplexed on the voice carrier without derogating voice communications.

6 Applicable to operational fixed stations in the bands 72.0–73.0 MHz and 75.4–76.0 MHz and to CAP stations using F3 on143.900 MHz and 148.150 MHz.

7 Applicable to operational fixed stations presently authorized in the band 73.0–74.6 MHz.8 The authorized bandwidth is equal to the necessary bandwidth for frequency or digitally modulated transmitters used in aero-

nautical telemetering and associated aeronautical telemetry or telecommand stations operating in the 1435–1535 MHz and2310–2390 MHz bands. The necessary bandwidth must be computed in accordance with part 2 of this chapter.

9 To be specified on license.10 H2B must be used by stations employing digital selective calling.11 For A1A, F1B and single sideband emissions, except H2B, the assigned frequency must be 1400 Hz above the carrier fre-

quency.12 R3E, H3E, and J3E will be authorized only below 25000 kHz. Only H2B, J3E, J7B, and J9W are authorized, except that

A3E and H3E may be used only on 3023 kHz and 5680 kHz for search and rescue operations.13 The letters ‘‘K, L, M, Q, V, W, and X’’ may also be used in place of the letter ‘‘P’’ for pulsed radars.14 Authorized for use at radiobeacon stations.15 Applicable only to transmitters of survival craft stations, emergency locator transmitter stations and emergency locator trans-

mitter test stations type accepted after October 21, 1973.16 Authorized for use by aircraft earth stations. Lower values of necessary and authorized bandwidth are permitted.

(b) For other emissions, an applicantmust determine the emission designa-tor by using part 2 of this chapter.

(c) A license to use radiotelephonyincludes the use of tone signals or sig-naling devices whose sole function is toestablish or maintain voice commu-nications.

(d) Emissions other than, orbandwidths in excess of, those listed inparagraph (b) of this section, will beauthorized only upon a satisfactoryshowing of need. An application re-questing this special license must fullydescribe the emission desired and therequired bandwidth, and must state thepurpose of the proposed operation.

[53 FR 28940, Aug. 1, 1988, as amended at 55FR 7333, Mar. 1, 1990; 55 FR 13535, Apr. 11,1990; 55 FR 28627, July 12, 1990; 56 FR 11518,Mar. 19, 1991; 57 FR 45749, Oct. 5, 1992; 58 FR30127, May 26, 1993]

§ 87.139 Emission limitations.(a) Except for ELTs and when using

single sideband (R3E, H3E, J3E), or fre-quency modulation (F9) or digital mod-ulation (F9Y) for telemetry or tele-command in the frequency bands 1435–1535 MHz and 2310–2390 MHz, the meanpower of any emissions must be attenu-ated below the mean power of thetransmitters (pY) as follows:

(1) When the frequency is removedfrom the assigned frequency by morethan 50 percent up to and including 100percent of the authorized bandwidththe attenuation must be at least 25 dB;

(2) When the frequency is removedfrom the assigned frequency by morethan 100 percent up to and including 250

percent of the authorized bandwidththe attenuation must be at least 35 dB.

(3) When the frequency is removedfrom the assigned frequency by morethan 250 percent of the authorizedbandwidth the attenuation for aircraftstation transmitters must be at least40 dB; and the attenuation for aero-nautical station transmitters must beat least 43 + 10 log10 pY dB.

(b) For aircraft station transmittersand for aeronautical station transmit-ters first installed before February 1,1983, and using H2B, H3E, J3E, J7B orJ9W, the mean power of any emissionsmust be attenuated below the meanpower of the transmitter (pY) as fol-lows:

(1) When the frequency is removedfrom the assigned frequency by morethan 50 percent up to and including 150percent of the authorized bandwidth of4.0 kHz, the attenuation must be atleast 25 dB.


(3) When the frequency is removedfrom the assigned frequency by morethan 250 percent of the authorizedbandwidth of 4.0 kHz for aircraft sta-tion transmitters the attenuation mustbe at least 40 dB; and for aeronauticalstation transmitters the attenuationmust be at least 43 + 10 log10 pY dB.

(c) For aircraft station transmittersfirst installed after February 1, 1983,


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47 CFR Ch. I (10–1–97 Edition)§ 87.139

and for aeronautical station transmit-ters in use after February 1, 1983, andusing H2B, H3E, J3E, J7B or J9W, thepeak envelope power of any emissionsmust be attenuated below the peak en-velope power of the transmitter (pX) asfollows:



(3) When the frequency is removedfrom the assigned frequency by morethan 250 percent of the authorizedbandwidth of 3.0 kHz for aircraft trans-mitters the attenuation must be atleast 43 dB. For aeronautical stationtransmitters with transmitter powerup to and including 50 watts the at-tenuation must be at least 43 + 10 log10

pX dB and with transmitter powermore than 50 watts the attenuationmust be at least 60 dB.

(d) Except for telemetry in the 1435–1535 MHz band, when the frequency isremoved from the assigned frequencyby more than 250 percent of the author-ized bandwidth for aircraft stationsabove 30 MHz and all ground stationsthe attenuation must be at least 43+10log10 pY dB.

(e) When using frequency modulationor digital modulation for telemetry ortelecommand in the 1435–1535 MHz and2310–2390 MHz frequency bands with anauthorized bandwidth equal to or lessthan 1 MHz the emissions must be at-tenuated as follows:

(1) On any frequency removed fromthe assigned frequency by more than100 percent of the authorized band-width up to and including 100 percentplus 0.5 MHz, the attenuation must beat least 60 dB, when measured in a 3.0kHz bandwidth. This signal need not beattenuated more than 25 dB below 1milliwatt.

(2) On any frequency removed fromthe assigned frequency by more than100 percent of the authorized band-width plus 0.5 MHz, the attenuation

must be at least 55 + 10 log10 pY dBwhen measured in a 3.0 kHz bandwidth.

(f) When using frequency modulationor digital modulation for telemetry ortelecommand in the 1435–1535 MHz or2310–2390 MHz frequency bands with anauthorized bandwidth greater than 1MHz, the emissions must be attenuatedas follows:

(1) On any frequency removed fromthe assigned frequency by more than 50percent of the authorized bandwidthplus 0.5 MHz up to and including 50 per-cent of the authorized bandwidth plus1.0 MHz, the attenuation must be 60 dB,when measured in a 3.0 kHz bandwidth.The signal need not be attenuatedmore than 25 dB below 1 milliwatt.

(2) On any frequency removed fromthe assigned frequency by more than 50percent of the authorized bandwidthplus 1.0 MHz, the attenuation must beat least 55 + 10 log10 pY dB, when meas-ured in a 3.0 kHz bandwidth.

(g) The requirements of paragraphs(e) and (f) of this section apply totransmitters type accepted after Janu-ary 1, 1977, and to all transmitters firstinstalled after January 1, 1983.

(h) For ELTs operating on 121.500MHz, 243.000 MHz and 406.025 MHz themean power of any emission must beattenuated below the mean power ofthe transmitter (pY) as follows:

(1) When the frequency is moved fromthe assigned frequency by more than 50percent up to and including 100 percentof the authorized bandwidth the at-tenuation must be at least 25 dB;

(2) When the frequency is removedfrom the assigned frequency my morethan 100 percent of the authorizedbandwidth the attenuation must be atleast 30 dB.

(i) In case of conflict with other pro-visions of § 87.139, the provisions of thisparagraph shall govern for aircraftearth stations. When using G1D, G1E,or G1W emissions in the 1646.5–1660.5MHz frequency band, the emissionsmust be attenuated as shown below.

(1) At rated output power, whiletransmitting a modulated single car-rier, the composite spurious and noiseoutput shall be attenuated below themean power of the transmitter, pY, byat least:


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Frequency(MHz) Attenuation (dB) 1

.005–1559 83 or (65+10 log10 pY), whichever is greater.1559–18000 55 or (37+10 log10 pY) 2, whichever is greater.

1 These values are expressed in dB below the carrier ref-erenced to a 4 kHz bandwidth and relative to the maximumemission envelope level.

2 Excluding the frequency band of +/¥35 kHz or +/¥4.00 xthe symbol rate (SR), about the carrier frequency, whicheveris the greater exclusion.

(2) For transmitters rated at 60 wattsor less:

When transmitting two unmodulatedcarriers, each 3 dB below the ratedpower, the mean power of any inter-modulation products must be at least24 dB below the mean power of eithercarrier.

(3) The transmitter emission limit isa function of the modulation type andsymbol rate (SR). Symbol Rate is ex-pressed in symbols per second.

(4) While transmitting a single modu-lated signal at the rated output powerof the transmitter, the emissions mustbe attenuated below the maximumemission level by at least:

Frequency Offset (normalized to SR)Attenu-ation(dB)

+/¥0.75 x SR .......................................................... 0+/¥1.40 x SR .......................................................... 20+/¥2.80 x SR .......................................................... 40+/¥4.00 x SR or +/¥35 kHz .................................. Fm

Whichever is greater.

Where:Fm=55 or (37+10log10 pY), whichever is greaterSR=Symbol RateSR=1 x channel rate for BPSKSR=0.5 x channel rate for QPSK

The mask shall be defined by drawingstraight lines through the abovepoints.

[53 FR 28940, Aug. 1, 1988, as amended at 56FR 11518, Mar. 19, 1991; 57 FR 45749, Oct. 5,1992; 58 FR 30127, May 26, 1993; 58 FR 67695,Dec. 22, 1993; 59 FR 35269, July 11, 1994]

§ 87.141 Modulation requirements.(a) When A3E emission is used, the

modulation percentage must not ex-ceed 100 percent. This requirement doesnot apply to emergency locator trans-mitters or survival craft transmitters.

(b) A double sideband full carrier am-plitude modulated radiotelephonetransmitter with rated carrier poweroutput exceeding 10 watts must be ca-pable of automatically preventingmodulation in excess of 100 percent.

(c) If any licensed radiotelephonetransmitter causes harmful inter-ference to any authorized radio servicebecause of excessive modulation, theCommission will require the use of thetransmitter to be discontinued until itis rendered capable of automaticallypreventing modulation in excess of 100percent.

(d) Single sideband transmittersmust be able to operate in the follow-ing modes:

Carrier modeLevel N(dB) of the carrierwith respect to peak enve-

lope power

Full carrier (H3E) ...................... O>N>–6.Suppressed carrier (J3E) ......... Aircraft stations N<–26´

Aeronautical stationsN<–40.

(e) Each frequency modulated trans-mitter operating in the band 72.0–76.0MHz must have a modulation limiter.

(f) Each frequency modulated trans-mitter equipped with a modulationlimiter must have a low pass filter be-tween the modulation limiter and themodulated stage. At audio frequenciesbetween 3 kHz and 15 kHz, the filtermust have an attenuation greater thanthe attenuation at 1 kHz by at least 40log10 (f/3) db where ‘‘f’’ is the frequencyin kilohertz. Above 15 kHz, the attenu-ation must be at least 28 db greaterthan the attenuation at 1 kHz.

(g) Except that symmetric side bandsare not required, the modulation char-acteristics for ELTs must be in accord-ance with specifications contained inthe Federal Aviation Administration(FAA) Technical Standard Order (TSO)Document TSO–C91a titled ‘‘Emer-gency Locator Transmitter (ELT)Equipment’’ dated April 29, 1985. TSO–C91a is incorporated by reference in ac-cordance with 5 U.S.C. 552(a). TSO–C91amay be obtained from the Departmentof Transportation, Federal AviationAdministration, Office of Airworthi-ness, 800 Independence Avenue SW.,Washington DC 20591.

(h) ELTs must use A3X emission andmay use A3E or NON emissions on anoptional basis while transmitting.Each transmission of a synthesized orrecorded voice message from an ELTmust be preceded by the words ‘‘this isa recording’’; transmission of A3E orNON emission must not exceed 90 sec-onds; and any transmission of A3E or


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47 CFR Ch. I (10–1–97 Edition)§ 87.143

NON emissions must be followed by atleast three minutes of A3X emission.

(i) ELTs manufactured on or afterOctober 1, 1988, must have a clearly de-fined carrier frequency distinct fromthe modulation sidebands for the man-datory emission, A3X, and, if used, theA3E or NON emissions. On 121.500 MHzat least thirty per cent of the totalpower emitted during any transmissioncycle with or without modulation mustbe contained within plus or minus 30Hz of the carrier frequency. On 243.000MHz at least thirty percent of the totalpower emitted during any transmissioncycle with or without modulation mustbe contained within plus or minus 60Hz of the carrier frequency. Addition-ally, if the type of emission is changedduring transmission, the carrier fre-quency must not shift more than plusor minus 30 Hz on 121.500 MHz and notmore than plus or minus 60Hz on 243.000MHz. The long term stability of thecarrier frequency must comply withthe requirements in § 87.133 of this part.

(j) Transmitters used at Aircraftearth stations must employ BPSK fortransmission rates up to and including2400 bits per second, and QPSK forhigher rates.

[53 FR 28940, Aug. 1, 1988, as amended at 54FR 11721, Mar. 22, 1989; 56 FR 11518, Mar. 19,1991; 57 FR 45749, Oct. 5, 1992]

§ 87.143 Transmitter control require-ments.

(a) Each transmitter must be in-stalled so that it is not accessible to,or capable of being operated by personsother than those authorized by the li-censee.

(b) Each station must be providedwith a control point at the location ofthe transmitting equipment, unlessotherwise specifically authorized. Ex-cept for aeronautical enroute stationsgoverned by paragraph (e) of this sec-tion, a control point is the location atwhich the radio operator is stationed.It is the position at which the trans-mitter(s) can immediately be turnedoff.

(c) Applicants for additional controlpoints at aeronautical advisory(unicom) stations must specify the lo-cation of each proposed control point.

(d) Except for aeronautical enroutestations governed by paragraph (f) of

this section, the control point musthave the following facilities installed:

(1) A device that indicates when thetransmitter is radiating or when thetransmitter control circuits have beenswitched on. This requirement does notapply to aircraft stations;

(2) Aurally monitoring of all trans-missions originating at dispatchpoints;

(3) A way to disconnect dispatchpoints from the transmitter; and

(4) A way to turn off the transmitter.(e) A dispatch point is an operating

position subordinate to the controlpoint. Dispatch points may be installedwithout authorization from the Com-mission, and dispatch point operatorsare not required to be licensed.

(f) In the aeronautical enroute serv-ice, the control point for an automati-cally controlled enroute station is thecomputer facility which controls thetransmitter. Any computer controlledtransmitter must be equipped to auto-matically shut down after 3 minutes ofcontinuous transmission of anunmodulated carrier.

§ 87.145 Acceptability of transmittersfor licensing.

(a) The Commission publishes a listof type approved and type acceptedequipment entitled ‘‘Radio EquipmentList—Equipment Acceptable for Li-censing.’’ Copies of this list are avail-able for inspection at any of the Com-mission’s offices.

(b) Each transmitter must be typeaccepted for use in these services, ex-cept as listed in paragraph (d) of thissection. However, aircraft stationswhich transmit on maritime mobilefrequencies must use transmitters typeaccepted for use in ship stations in ac-cordance with part 80 of this chapter.Type acceptance under part 80 is notrequired for aircraft earth stationstransmitting on maritime mobile-sat-ellite frequencies. Such stations mustbe type accepted under part 87.

(c) Some radio equipment installedon air carrier aircraft must meet therequirements of the Commission andthe requirements of the FAA. The FAArequirements may be obtained from theFAA, Aircraft Maintenance Division,800 Independence Ave., SW., Washing-ton, DC 20591.


207


(d) The equipment listed below is ex-empted from type acceptance. The op-eration of transmitters which have notbeen type accepted must not result inharmful interference due to the failureof those transmitters to comply withtechnical standards of this subpart.

(1) Development or Civil Air Patroltransmitters.

(2) Flight test station transmittersfor limited periods where justified.

(3) U.S. Government transmittersfurnished in the performance of a U.S.Government contract if the use of typeaccepted equipment would increase thecost of the contract or if the transmit-ter will be incorporated in the finishedproduct. However, such equipmentmust meet the technical standards con-tained in this subpart.

(4) ELTs notified in accordance with§ 87.147(e).

(5) Signal generators when used asradionavigation land test stations(MTF).

(e) Aircraft earth stations must cor-rect their transmit frequencies forDoppler effect relative to the satellite.The transmitted signal may not devi-ate more than 335 Hz from the desiredtransmit frequency. (This is a root sumsquare error which assumes zero errorfor the received ground earth stationsignal and includes the AES transmit/receive frequency reference error andthe AES automatic frequency controlresidual errors.) The applicant must at-test that the equipment provides ade-quate Doppler effect compensation andwhere applicable, that measurementshave been made that demonstrate com-pliance. Submission of data dem-onstrating compliance is not requiredunless requested by the Commission.

[53 FR 28940, Aug. 1, 1988, as amended at 57FR 45750, Oct. 5, 1992; 58 FR 30127, May 26,1993; 58 FR 67695, Dec. 22, 1993]

§ 87.147 Authorization of equipment.(a) Type acceptance or notification

may be requested by following the typeacceptance or notification proceduresin part 2 of this chapter. Aircrafttransmitters must meet the require-ments over an ambient temperaturerange of –20 degreess to +50 degrees Cel-sius.

(b) ELTs manufactured after October1, 1988, must meet the output power

characteristics contained in § 87.141(i)when tested in accordance with theSignal Enhancement Test contained insubpart N, part 2 of this chapter. A re-port of the measurements must be sub-mitted with each application for typeacceptance. ELTs that meet the outputpower characteristics of the sectionmust have a permanent label promi-nently displayed on the outer casingstate, ‘‘Meets FCC Rule for improvedsatellite detection.’’ This label, how-ever, must not be placed on the equip-ment without authorization to do so bythe Commission. Application for suchauthorization may be made either bysubmission of a new application fortype acceptance accompanied by therequired fee and all information andtest data required by parts 2 and 87 ofthis chapter or, for ELTs type acceptedprior to October 1, 1988, a letter re-questing such authorization, includingappropriate test data and a showingthat all units produced under the origi-nal type acceptance authorizationcomply with the requirements of thisparagraph without change to the origi-nal circuitry.

(c) An applicant for a station licensemay request type acceptance for an in-dividual transmitter by following thetype acceptance procedure in part 2 ofthis chapter. Such a transmitter willbe individually type accepted and sonoted on the station license, but willnot generally be included in the Com-mission’s ‘‘Radio Equipment List—Equipment Acceptable for Licensing’’.

(d) An applicant for type acceptanceof equipment intended for transmissionin any of the frequency bands listed inparagraph (d)(3) of this section mustnotify the FAA of the filing of a typeacceptance application. The letter ofnotification must be mailed to: FAA,Spectrum Engineering Division, 800Independence Ave. SW., Washington,DC 20591 no later than the date of filingof the application with the Commis-sion.

(1) The notification must describe theequipment, give the manufacturer’sidentification, antenna characteristics,rated output power, emission type andcharacteristics, the frequency or fre-quencies of operation, and essential re-ceiver characteristics if protection isrequired.


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47 CFR Ch. I (10–1–97 Edition)§ 87.149

(2) The type acceptance applicationmust include a copy of the notificationletter to the FAA. The Commissionwill not act for 21 days after receipt ofthe application to afford the FAA anopportunity to comment. If the FAAobjects to the application for equip-ment authorization, it should mail itsobjection with a showing that theequipment is incompatible with theNational Airspace System to: Office ofEngineering and Technology—LaurelLaboratory, Authorization and Evalua-tion Division, 7435 Oakland Mills Rd.,Columbia, MD 21046. If the Commissionreceives such an objection, the Com-mission will consider the FAA showingbefore taking final action on the appli-cation.

(3) The frequency bands are as fol-lows:

74.800 MHz to 75.200 MHz108.000 MHz to 137.000 MHz328.600 MHz to 335.400 MHz960.000 MHz to 1215.000 MHz1559.000 to 1626.500 MHz1646.500 MHz to 1660.500 MHz5000.000 MHz to 5250.000 MHz14.000 GHz to 14.400 GHz15.400 GHz to 15.700 GHz24.250 GHz to 25.250 GHz31.800 GHz to 33.400 GHz

(e) Application for notification ofELTs capable of operating on the fre-quency 406.025 MHz must include suffi-cient documentation to show that theELT meets the requirements of§ 87.199(a). A letter notifying the FAAof the filing of an application for agrant of notification must be mailedto: FAA, Spectrum Engineering Divi-sion, 800 Independence Avenue SW.,Washington, DC 20591 no later than thedate of filing of the application withthe Commission.

[53 FR 28940, Aug. 1, 1988, as amended at 54FR 11721, Mar. 22, 1989; 56 FR 11518, Mar. 19,1991; 57 FR 45750, Oct. 5, 1992; 58 FR 30127,May 26, 1993; 58 FR 67696, Dec. 22, 1993]

§ 87.149 Special requirements for auto-matic link establishment (ALE).

Brief signalling for the purposes ofmeasuring the quality of a radio chan-nel and thereafter establishing commu-nication shall be permitted within the2 MHz–30 MHz band. Public coast sta-tions licensed under part 80 of thischapter providing high seas service are

authorized by rule to use such signal-ling under the following conditions:

(a) The transmitter power shall notexceed 100 W ERP;

(b) Transmissions must sweep lin-early in frequency at a rate of at least60 kHz per second, occupying any 3 kHzbandwidth for less than 50 milli-seconds;

(c) The transmitter shall scan theband no more than four times per hour;

(d) Transmissions within 6 kHz of thefollowing protected frequencies andfrequency bands must not exceed 10 µWpeak ERP:

(1) Protected frequencies (kHz)2091.0 4188.0 6312.0 12290.0 16420.02174.5 4207.5 8257.0 12392.0 16522.02182.0 5000.0 8291.0 12520.0 16695.02187.5 5167.5 8357.5 12563.0 16750.02500.0 5680.0 8364.0 12577.0 16804.53023.0 6215.0 8375.0 15000.0 20000.04000.0 6268.0 8414.5 16000.0 25000.04177.5 6282.0 10000.0

(2) Protected bands (kHz)

4125.0–4128.08376.25–8386.7513360.0–13410.025500.0–25670.0

(e) The instantaneous signal, whichrefers to the peak power that would bemeasured with the frequency sweepstopped, along with spurious emissionsgenerated from the sweeping signal,must be attenuated below the peak car-rier power (in watts) as follows:

(1) On any frequency more than 5 Hzfrom the instantaneous carrier fre-quency, at least 3 dB;

(2) On any frequency more than 250Hz from the instantaneous carrier fre-quency, at least 40 dB; and

(3) On any frequency more than 7.5kHz from the instantaneous carrier fre-quency, at least 43 + 10log10 (peakpower in watts) db.

[62 FR 40308, July 28, 1997]

Subpart E—Frequencies§ 87.169 Scope.

This subpart contains class of stationsymbols and a frequency table whichlists assignable frequencies. Fre-quencies in the Aviation Services willtransmit communications for the safe,expeditious, and economic operation ofaircraft and the protection of life and


209


property in the air. Each class of landstation and Civil Air Patrol stationmay communicate in accordance withthe particular sections of this partwhich govern these classes. Land sta-tions in the Aviation Services in Alas-ka may transmit messages concerningsickness, death, weather, ice conditionsor other matters relating to safety oflife and property if there is no other es-tablished means of communications be-tween the points in question and nocharge is made for the communicationsservice.

§ 87.171 Class of station symbols.The two or three letter symbols for

the classes of station in the aviationservices are:

Symbol and class of station

AX—Aeronautical fixedAXO—Aeronautical operational fixedFA—Aeronautical land (unspecified)FAU—Aeronautical advisory (unicom)FAC—Airport control towerFAE—Aeronautical enrouteFAM—Aeronautical multicomFAP—Civil Air PatrolFAR—Aeronautical search and rescueFAS—Aviation supportFAT—Flight test

FAW—Automatic weather observationMA—Aircraft (Air carrier and Private)MA1—Air carrier aircraft onlyMA2—Private aircraft onlyMOU—Aeronautical utility mobileMRT—ELT testRL—Radionavigation land (unspecified)RLA—Marker beaconRLB—RadiobeaconRLG—Glide pathRLL—LocalizerRLO—VHF omni-rangeRLS—Surveillance radarRLT—Radionavigation land testRLW—Microwave landing systemTJ—Aircraft earth station in the Aeronauti-

cal Mobile-Satellite Service


§ 87.173 Frequencies.(a) The table in paragraph (b) of this

section lists assignable carrier fre-quencies or frequency bands.

(1) The single letter symbol appear-ing in the ‘‘Subpart’’ column indicatesthe subpart of this part which containsadditional applicable regulations.

(2) The two or three letter symbol ap-pearing in the ‘‘Class of Station’’ col-umn indicates the class of station towhich the frequency is assignable.

(b) Frequency table:

Frequency or frequency band Subpart Class of station Remarks

90–110 kHz ........................... Q RL LORAN‘‘C’’.190–285 kHz ......................... Q RLB Radiobeacons.200–285 kHz ......................... O FAC Air traffic control.325–405 kHz ......................... O FAC Air traffic control.325–435 kHz ......................... Q RLB Radiobeacons.410.0 kHz .............................. F MA International direction-finding for use outside of U.S.457.0 kHz .............................. F MA Working frequency for aircraft on over water flights.500.0 kHz .............................. F MA International calling and distress frequency for ships and

aircraft on over water flights.510.525 kHz .......................... Q RLB Radiobeacons.2182.0 kHz ............................ F MA International distress and calling.2371.0 kHz ............................ R MA, FAP Civil Air Patrol.2374.0 kHz ............................ R MA, FAP Civil Air Patrol.2648.0 kHz ............................ I AX Alaska station.2851.0 kHz ............................ I, J MA, FAE, FAT International HF (AFI); Flight test.2854.0 kHz ............................ I MA, FAE International HF (SAT).2866.0 kHz ............................ I MA, FAE Domestic HF (Alaska).2869.0 kHz ............................ I MA, FAE International HF (CEP).2872.0 kHz ............................ I MA, FAE International HF (NAT).2875.0 kHz ............................ I MA, FAE Domestic HF.2878.0 kHz ............................ I MA1, FAE Domestic HF; International HF (AFI).2887.0 kHz ............................ I MA, FAE International HF (CAR).2899.0 kHz ............................ I MA, FAE International HF (NAT).2911.0 kHz ............................ I MA, FAE Domestic HF.2932.0 kHz ............................ I MA, FAE International HF (NP).2935.0 kHz ............................ I MA, FAE International HF (SAT).2944.0 kHz ............................ I MA, FAE International HF (SAM and MID).2956.0 kHz ............................ I MA, FAE Domestic HF.2962.0 kHz ............................ I MA, FAE International HF (NAT).2971.0 kHz ............................ I MA, FAE International HF (NAT).2992.0 kHz ............................ I MA, FAE International HF (MID).2998.0 kHz ............................ I MA, FAE International HF (CWP).3004.0 kHz ............................ I, J MA, FAE, FAT International HF (NCA); Flight test.


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47 CFR Ch. I (10–1–97 Edition)§ 87.173


3013.0 kHz ............................ I MA, FAE Long distance operational control.3016.0 kHz ............................ I MA, FAE International HF (EA, NAT).3019.0 kHz ............................ I MA1, FAE Domestic HF; International HF ( (NCA).3023.0 kHz ............................ F, M, O MA1, FAR, FAC Search and rescue communications.3281.0 kHz ............................ K MA, FAS Lighter-than-air craft and aeronautical stations serving

lighter-than-air craft.3413.0 kHz ............................ I MA, FAE International HF (CEP).3419.0 kHz ............................ I MA, FAE International HF (AFI).3425.0 kHz ............................ I MA, FAE International HF (AFI).3434.0 kHz ............................ I MA1, FAE Domestic HF.3443.0 kHz ............................ J MA, FAT3449.0 kHz ............................ I MA, FAE Domestic HF.3452.0 kHz ............................ I MA, FAE International HF (SAT).3455.0 kHz ............................ I MA, FAE International HF (CAR, CWP).3467.0 kHz ............................ I MA, FAE International HF (AFI, MID, SP).3470.0 kHz ............................ I MA, FAE Domestic HF and International HF (SEA).3473.0 kHz ............................ I MA, FAE International HF (MID).3476.0 kHz ............................ I MA, FAE International HF (INO, NAT).3479.0 kHz ............................ I MA, FAE International HF (EUR, SAM).3485.0 kHz ............................ I MA, FAE International HF (EA, SEA).3491.0 kHz ............................ I MA, FAE International HF (EA).3494.0 kHz ............................ I MA, FAE Long distance operational control.4125.0 kHz ............................ F MA Distress and safety with ships and coast stations.4466.0 kHz ............................ R MA, FAP Civil Air Patrol.4469.0 kHz ............................ R MA, FAP Civil Air Patrol.4506.0 kHz ............................ R MA, FAP Civil Air Patrol.4509.0 kHz ............................ R MA, FAP Civil Air Patrol.4550.0 kHz ............................ I AX Gulf of Mexico.4582.0 kHz ............................ R MA, FAP Civil Air Patrol.4585.0 kHz ............................ R MA, FAP Civil Air Patrol.4601.0 kHz ............................ R MA, FAP Civil Air Patrol.4604.0 kHz ............................ R MA, FAP Civil Air Patrol.4627.0 kHz ............................ R MA, FAP Civil Air Patrol.4630.0 kHz ............................ R MA, FAP Civil Air Patrol.4645.0 kHz ............................ I AX Alaska.4657.0 kHz ............................ I MA, FAE International HF (AFI, CEP).4666.0 kHz ............................ I MA, FAE International HF (CWP).4669.0 kHz ............................ I MA, FAE International HF (MID, SAM).4672.0 kHz ............................ I MA1, FAE Domestic HF.4675.0 kHz ............................ I MA, FAE International HF (NAT).4678.0 kHz ............................ I MA, FAE International HF (NCA).4947.5 kHz ............................ I AX Alaska.5036.0 kHz ............................ I AX Gulf of Mexico.5122.5 kHz ............................ I AX Alaska.5167.5 kHz ............................ I FA Alaska emergency.5310.0 kHz ............................ I AX Alaska.5451.0 kHz ............................ J MA, FAT5463.0 kHz ............................ I MA1, FAE Domestic HF.5469.0 kHz ............................ J MA, FAT5427.0 kHz ............................ I MA, FAE Domestic HF.5484.0 kHz ............................ I MA, FAE Domestic HF.5490.0 kHz ............................ I MA, FAE Domestic HF.5493.0 kHz ............................ I MA, FAE International HF (AFI).5496.0 kHz ............................ I MA, FAE Domestic HF.5508.0 kHz ............................ I MA1, FAE Domestic HF.5520.0 kHz ............................ I MA, FAE International HF (CAR).5526.0 kHz ............................ I MA, FAE International HF (SAM).5529.0 kHz ............................ I MA, FAE Long distance operational control.5538.0 kHz ............................ I MA, FAE Long distance operational control.5547.0 kHz ............................ I MA, FAE International HF (CEP).5550.0 kHz ............................ I MA, FAE International HF (CAR).5559.0 kHz ............................ I MA, FAE International HF (SP).5565.0 kHz ............................ I MA, FAE International HF (SAT).5571.0 kHz ............................ J MA, FAT5574.0 kHz ............................ I MA, FAE International HF (CEP).5598.0 kHz ............................ I MA, FAE International HF (NAT).5616.0 kHz ............................ I MA, FAE International HF (NAT).5628.0 kHz ............................ I MA, FAE International HF (NP).5631.0 kHz ............................ I MA, FAE Domestic HF.5634.0 kHz ............................ I MA, FAE International HF (INO).5643.0 kHz ............................ I MA, FAE International HF (SP).5646.0 kHz ............................ I MA, FAE International HF (NCA).5649.0 kHz ............................ I MA, FAE International HF (NAT, SEA).5652.0 kHz ............................ I MA, FAE International HF (AFI, CWP).


211



5655.0 kHz ............................ I MA, FAE International HF (EA, SEA).5658.0 kHz ............................ I MA, FAE International HF (AFI, MID).5661.0 kHz ............................ I MA, FAE International HF (CWP, EUR).5664.0 kHz ............................ I MA, FAE International HF (NCA).5667.0 kHz ............................ I MA, FAE International HF (MID).5670.0 kHz ............................ I MA, FAE International HF (EA).5680.0 kHz ............................ F, M, O MA1, FAC, FAR Search and rescue communications.5887.5 kHz ............................ I AX Alaska.6532.0 kHz ............................ I MA, FAE International HF (CWP).6535.0 kHz ............................ I MA, FAE International HF (SAT).6550.0 kHz ............................ J MA, FAT6556.0 kHz ............................ I MA, FAE International HF (SEA).6559.0 kHz ............................ I MA, FAE International HF (AFI).6562.0 kHz ............................ I MA, FAE International HF (CWP).6571.0 kHz ............................ I MA, FAE International HF (EA).6574.0 kHz ............................ I MA, FAE International HF (AFI).6577.0 kHz ............................ I MA, FAE International HF (CAR).6580.0 kHz ............................ I MA, FAE Domestic HF.6586.0 kHz ............................ I MA, FAE International HF (CAR).6592.0 kHz ............................ I MA, FAE International HF (NCA).6598.0 kHz ............................ I MA, FAE International HF (EUR).6604.0 kHz ............................ I MA, FAE Domestic HF.6622.0 kHz ............................ I MA, FAE International HF (NAT).6625.0 kHz ............................ I MA, FAE International HF (MID).6628.0 kHz ............................ I MA, FAE International HF (NAT).6631.0 kHz ............................ I MA, FAE International HF (MID).6637.0 kHz ............................ I MA, FAE Long distance operational control.6640.0 kHz ............................ I MA, FAE Long distance operational control.6649.0 kHz ............................ I MA, FAE International HF (SAM).6655.0 kHz ............................ I MA, FAE International HF (NP).6661.0 kHz ............................ I MA, FAE International HF (NP).6673.0 kHz ............................ I MA, FAE International HF (AFI, CEP).8015.0 kHz ............................ I AX Alaska.8364.0 kHz ............................ F MA, Search and rescue communications.8822.0 kHz ............................ J MA, FAT8825.0 kHz ............................ I MA, FAE International HF (NAT).8831.0 kHz ............................ I MA, FAE International HF (NAT).8843.0 kHz ............................ I MA, FAE International HF (CEP).8846.0 kHz ............................ I MA, FAE International HF (CAR).8855.0 kHz ............................ I MA, FAE Domestic HF; International HF (SAM).8861.0 kHz ............................ I MA, FAE International HF (SAT).8864.0 kHz ............................ I MA, FAE International HF (NAT).8867.0 kHz ............................ I MA, FAE International HF (SP).8876.0 kHz ............................ I MA, FAE Domestic HF.8879.0 kHz ............................ I MA, FAE International HF (INO, NAT).8891.0 kHz ............................ I MA, FAE International HF (NAT).8894.0 kHz ............................ I MA, FAE International HF (AFI).8897.0 kHz ............................ I MA, FAE International HF (EA).8903.0 kHz ............................ I MA, FAE International HF (AFI, CWP).8906.0 kHz ............................ I MA, FAE International HF (NAT).8918.0 kHz ............................ I MA, FAE International HF (CAR, MID).8933.0 kHz ............................ I MA, FAE Long distance operational control.8942.0 kHz ............................ I MA, FAE International HF (SEA).8951.0 kHz ............................ I MA, FAE International HF (MID).10018.0 kHz .......................... I MA, FAE International HF (MID).10024.0 kHz .......................... I MA, FAE International HF (SAM).10033.0 kHz .......................... I MA, FAE Long distance operational control.10042.0 kHz .......................... I MA, FAE International HF (EA).10045.0 kHz .......................... J MA, FAT10048.0 kHz .......................... I MA, FAE International HF (NP).10057.0 kHz .......................... I MA, FAE International HF (CEP).10066.0 kHz .......................... I MA, FAE Domestic HF; International HF (SEA).10075.0 kHz .......................... I MA, FAE Long distance operational control.10081.0 kHz .......................... I MA, FAE International HF (CWP).10084.0 kHz .......................... I MA, FAE International HF (EUR, SP).10096.0 kHz .......................... I MA, FAE International HF (NCA, SAM).11279.0 kHz .......................... I MA, FAE International HF (NAT).11282.0 kHz .......................... I MA, FAE International HF (CEP).11288.0 kHz .......................... J MA, FAT11291.0 kHz .......................... I MA, FAE International HF (SAT).11300.0 kHz .......................... I MA, FAE International HF (AFI).11306.0 kHz .......................... J MA, FAT11309.0 kHz .......................... I MA, FAE International HF (NAT).11327.0 kHz .......................... I MA, FAE International HF (SP).


212

47 CFR Ch. I (10–1–97 Edition)§ 87.173


11330.0 kHz .......................... I MA, FAE International HF (AFI, NP).11336.0 kHz .......................... I MA, FAE International HF (NAT).11342.0 kHz .......................... I MA, FAE Long distance operational control.11348.0 kHz .......................... I MA, FAE Long distance operational control.11357.0 kHz .......................... I MA, FAE Domestic HF.11360.0 kHz .......................... I MA, FAE International HF (SAM).11363.0 kHz .......................... I MA, FAE Domestic HF.11375.0 kHz .......................... I MA, FAE International HF (MID).11384.0 kHz .......................... I MA, FAE International HF (CWP).11387.0 kHz .......................... I MA, FAE International HF (CAR).11396.0 kHz .......................... I MA, FAE International HF (CAR, EA, SEA).13273.0 kHz .......................... I MA, FAE International HF (AFI).13288.0 kHz .......................... I MA, FAE International HF (AFI, EUR, MID).13291.0 kHz .......................... I MA, FAE International HF (NAT).13294.0 kHz .......................... I MA, FAE International HF (AFI).13297.0 kHz .......................... I MA, FAE International HF (CAR, EA, SAM).13300.0 kHz .......................... I MA, FAE International HF (CEP, CWP, NP, SP).13303.0 kHz .......................... I MA, FAE International HF (EA, NCA).13306.0 kHz .......................... I MA, FAE International HF (INO, NAT).13309.0 kHz .......................... I MA, FAE International HF (EA, SEA).13312.0 kHz .......................... I, J MA, FAE, FAT International HF (MID); Flight test.13315.0 kHz .......................... I MA, FAE International HF (NCA, SAT).13318.0 kHz .......................... I MA, FAE International HF (SEA).13330.0 kHz .......................... I MA, FAE Long distance operational control.13348.0 kHz .......................... I MA, FAE Long distance operational control.13357.0 kHz .......................... I MA, FAE International HF (SAT).17904.0 kHz .......................... I MA, FAE International HF (CEP, CWP, NP, SP).17907.0 kHz .......................... I MA, FAE International HF (CAR, EA, SAM, SEA).17925.0 kHz .......................... I MA, FAE Long distance operational control.17946.0 kHz .......................... I MA, FAE International HF (NAT).17955.0 kHz .......................... I MA, FAE International HF (SAT).17958.0 kHz .......................... I MA, FAE International HF (NCA).17961.0 kHz .......................... I MA, FAE International HF (AFI, EUR, INO, MID).17964.0 kHz .......................... J MA, FAT21931.0 kHz .......................... J MA, FAT21964.0 kHz .......................... I MA, FAE Long distance operational control.26618.5 kHz .......................... R MA, FAP Civil Air Patrol.26620.0 kHz .......................... R MA, FAP Civil Air Patrol.26621.5 kHz .......................... R MA, FAP Civil Air Patrol.72.020–75.980 MHz .............. P FA, AXO Operational fixed; 20 kHz spacing.75.000 MHz ........................... Q RLA Marker beacon.108.000 MHz ......................... Q RLT108.000–117.950 MHz .......... Q RLO VHF omni-range.108.050 MHz ......................... Q RLT108.100–111.950 MHz .......... Q RLL ILS localizer.108.100 MHz ......................... Q RLT108.150 MHz ......................... Q RLT118.000–121.400 MHz .......... O MA, FAC, FAW 25 kHz channel spacing.121.500 MHz ......................... G, H, I, J, K,

M, OMA, FAU, FAE,

FAT, FAS,FAC, FAM,FAP

Emergency and distress.

121.600–121.925 MHz .......... O, L, Q MA, FAC, MOU,RLT

25 kHz channel spacing.

121.950 MHz ......................... K FAS121.975 MHz ......................... F MA2, FAW Air traffic control operations.122.000 MHz ......................... F MA Air carrier and private aircraft enroute flight advisory serv-

ice provided by FAA.122.025 MHz ......................... F MA2, FAW Air traffic control operations.122.050 MHz ......................... F MA Air traffic control operations.122.075 MHz ......................... F MA2, FAW Air traffic control operations.122.100 MHz ......................... F, O MA, FAC Air traffic control operations.122.125–122.675 .................. F MA2 Air traffic control operations; 25 kHz spacing.122.700 MHz ......................... G, L MA, FAU, MOU Unicom at airports with no control tower; Aeronautical util-

ity stations.122.725 MHz ......................... G, L MA2, FAU, MOU Unicom at airports with no control tower; Aeronautical util-

ity stations.122.750 MHz ......................... F MA2 Private fixed wing aircraft air-to-air communications.122.775 MHz ......................... K MA, FAS122.800 MHz ......................... G, L MA, FAU, MOU Unicom at airports with no control tower; Aeronautical util-

ity stations.122.825 MHz ......................... I MA, FAE Domestic VHF122.850 MHz ......................... H, K, MA, FAM, FAS122.875 MHz ......................... I MA, FAE Domestic VHF


213



122.900 MHz ......................... F, H, LM

MA, FAR, FAM,MOU

122.925 MHz ......................... H MA2, FAM122.950 MHz ......................... G, L MA2, FAU, MOU Unicom at airports with no control tower; Aeronautical util-


ity stations.123.000 MHz ......................... G, L MA, FAU, MOU Unicom at airports with no control tower; Aeronautical util-

ity stations.123.025 MHz ......................... F MA2 Helicopter air-to-air communications; Air traffic control op-

erations.123.050 MHz ......................... G, L MA2, FAU, MOU Unicom at airports with no control tower; Aeronautical util-


ity stations.123.100 MHz ......................... M, O MA, FAC, FAR123.125 MHz ......................... J MA, FAT Itinerant.123.150 MHz ......................... J MA, FAT Itinerant.123.175 MHz ......................... J MA, FAT Itinerant.123.200 MHz ......................... J MA, FAT123.225 MHz ......................... J MA, FAT123.250 MHz ......................... J MA, FAT123.275 MHz ......................... J MA, FAT123.300 MHz ......................... K MA, FAS123.325 MHz ......................... J MA, FAT123.350 MHz ......................... J MA, FAT123.375 MHz ......................... J MA, FAT123.400 MHz ......................... J MA, FAT Itinerant.123.425 MHz ......................... J MA, FAT123.450 MHz ......................... J MA, FAT123.475 MHz ......................... J MA, FAT123.500 MHz ......................... K MA, FAS123.525 MHz ......................... J MA, FAT123.550 MHz ......................... J MA, FAT123.575 MHz ......................... J MA, FAT Itinerant.123.6–128.8 MHz .................. O MA, FAC, FAW 25 kHz channel spacing.128.825–132.000 MHz .......... I MA, FAE Domestic VHF; 25 kHz channel spacing.132.025–135.975 MHz .......... O MA, FAC, FAW 25 kHz channel spacing.136.000–136.075 MHz .......... 0, S MA, FAC, FAW Air traffic control operations.136.100 MHz ......................... Reserved for future unicom or AWOS.136.125–136.175 MHz .......... 0, S MA, FAC, FAW Air traffic control operations.136.200 MHz ......................... Reserved for future unicom or AWOS.136.225–136.250 MHz .......... 0, S MA, FAC, FAW Air traffic control operations.136.275 MHz ......................... Reserved for future unicom or AWOS.136.300–136.350 MHz .......... 0, S MA, FAC, FAW Air traffic control operations.136.375 MHz ......................... Reserved for future unicom or AWOS.136.400–136.450 MHz .......... 0, S MA, FAC, FAW Air traffic control operations.136.475 MHz ......................... Reserved for future unicom or AWOS.136.500–136.600 MHz .......... I MA, FAE Domestic VHF.136.625 MHz ......................... I MA, FAE Domestic VHF.136.650 MHz ......................... I MA, FAE Domestic VHF.136.675 MHz ......................... I MA, FAE Domestic VHF.136.700 MHz ......................... I MA, FAE Domestic VHF.136.725 MHz ......................... I MA, FAE Domestic VHF.136.750 MHz ......................... I MA, FAE Domestic VHF.136.775 MHz ......................... I MA, FAE Domestic VHF.136.800 MHz ......................... I MA, FAE Domestic VHF.136.825 MHz ......................... I MA, FAE Domestic VHF.136.850 MHz ......................... I MA, FAE Domestic VHF.136.875 MHz ......................... I MA, FAE Domestic VHF.136.900 MHz ......................... I MA, FAE International and domestic VHF.136.925 MHz ......................... I MA, FAE International and domestic VHF.136.950 MHz ......................... I MA, FAE International and domestic VHF.136.975 MHz ......................... I MA, FAE International and domestic VHF.143.75 MHz ........................... R MA,FAP Civil Air Patrol.143.900 MHz ......................... R MA, FAP Civil Air Patrol.148.150 MHz ......................... R MA, FAP Civil Air Patrol.156.300 MHz ......................... F MA For communications with ship stations under specific con-

ditions.156.375 MHz ......................... F MA For communications with ship stations under specific con-

ditions; Not authorized in New Oreleans vessel trafficservice area.

156.400 MHz ......................... F MA For communications with ship stations under specific con-ditions.


214

47 CFR Ch. I (10–1–97 Edition)§ 87.185





156.800 MHz ......................... F MA Distress, safety and calling frequency; For communicationswith ship stations under specific conditions.


157.425 MHz ......................... F MA For communications with commercial fishing vessels underspecific conditions except in Great Lakes and St. Law-rence Seaway areas.

243.000 MHz ......................... F MA Emergency and distress frequency for use of survival craftand emergency locator transmitters.

328.600–335.400 MHz .......... Q RLG ILS glide path.334.550 MHz ......................... Q RLT334.700 MHz ......................... Q RLT406.25 MHz ........................... F, G, H, I, J,

K, M, OMA, FAU, FAE,

FAT, FAS,FAC, FAM,FAP

Emergency and distress.

960–1215 MHz ...................... F, Q MA, RL Electronic aids to air navigation.978.000 MHz ......................... Q RLT979.000 MHz ......................... Q RLT1030.000 MHz ....................... Q RLT1104.000 MHz ....................... Q RLT979.000 MHz ......................... Q RLT1300–1350 MHz .................... F, Q MA, RLS Surveillance radars and transponders.1435–1535 MHz .................... F, J MA, FAT Aeronautical telemetry and telecommand operations.1559–1626.5 MHz ................. F, Q MA, RL Aeronautical radionavigation.1646.5–1660.5 MHz .............. F TJ Aeronautical Mobile-Satellite (R).2310–2390 MHz .................... J MA, FAT Aeronautical telemetry and telecommand operations.2700–2900 MHz .................... Q RLS Airport surveillance and weather radar.4200–4400 MHz .................... F MA Radio altimeters.5000–5250 MHz .................... Q MA, RLW Microwave landing system.5031.000 MHz ....................... Q RLT5350–5470 MHz .................... F MA Airborne radars and associated airborne beacons.8750–8850 MHz .................... F MA Airborne doppler radar.9000–9200 MHz .................... Q RLS Land-based radar.9300–9500 MHz .................... F, Q MA Airborne radars and associated airborne beacons.13250–13400 MHz ................ F MA Airborne doppler radar.14000–14400 MHz ................ F, Q MA, RL Aeronautical radionavigation.15400–15700 MHz ................ Q RL Aeronautical radionavigation.24250–25250 MHz ................ F, Q MA, RL Aeronautical radionavigation.31800–33400 MHz ................ F, Q MA, RL Aeronautical radionavigation.

[53 FR 28940, Aug. 1, 1988, as amended at 54 FR 11721, Mar. 22, 1989; 55 FR 7333, Mar. 1, 1990;55 FR 28628, July 12, 1990; 56 FR 21083, May 7, 1991; 56 FR 51656, Oct. 15, 1991; 57 FR 45750, Oct.5, 1992; 58 FR 30127, May 26, 1993]

Subpart F—Aircraft Stations

§ 87.185 Scope of service.

(a) Aircraft stations must limit theircommunications to the necessities ofsafe, efficient, and economic operationof aircraft and the protection of lifeand property in the air, except as oth-erwise specifically provided in thispart. Contact with an aeronauticalland station must only be attemptedwhen the aircraft is within the serivcearea of the land station. however, air-craft stations may transmit advisoryinformation on air traffic control,

unicom or aeronautical multicom fre-quencies for the benefit and use ofother stations monitoring these fre-quencies in accordance with FAA rec-ommended traffic advisory practices.

(b) Aircraft public correspondenceservice must be made available to allpersons without discrimination and onreasonable demand, and must commu-nicate without discrimination with anypublic coast station or mobile-satelliteearth station authorized to provide air-craft public correspondence service.

(c) Aircraft public correspondenceservice on maritime mobile frequencies


215


may only be carried by aircraft sta-tions licensed to use maritime mobilefrequencies and must follow the rulesfor public correspondence in part 80.

(d) Aircraft public correspondenceservice on Aeronautical Mobile-Sat-ellite (R) Service frequencies may onlybe carried on aircraft earth stations li-censed to use Aeronautical Mobile-Sat-ellite (R) frequencies and are subject tothe rules for public correspondence inthis part. Aircraft public correspond-ence service on Maritime Mobile-Sat-ellite Service frequencies may only becarried by aircraft earth stations li-censed to use Maritime Mobile-Sat-ellite frequencies and are subject tothe rules for public correspondence inpart 80.


§ 87.187 Frequencies.(a) Frequencies used for air-ground

Communications are listed in subpartE. Aircraft stations may use fre-quencies assigned to Government ornon-Government aeronautical stationsor radionavigation land stations if thecommunications are within the aero-nautical or radionavigation land sta-tion scope of service.

(b) 410 kHz is the international direc-tion-finding frequency for use outsidethe continental United States.

(c) 457 kHz is an authorized workingfrequency for flights over the highseas.

(d) 500 kHz an international callingand distress frequency for aircraft onflights over the high seas. Except fordistress, urgency or safety messages anaircraft station must not transmit on500 kHz during the silence periods forthree minutes twice each hour begin-ning at x h. 15 and x h.45 CoordinatedUniversal Time (u.t.c.).

(e) The frequency 2182 khz is an inter-national distress and calling frequencyfor use by ship, aircraft and survivalcraft stations. Aircraft stations mustuse J3E emission when operating on2182 kHz and communicating with do-mestic public and private coast sta-tions. The emission H3E may be usedwhen communicating with foreigncoast and ship stations.

(f) The frequencies 3023 kHz, 5680 kHz,122.900 MHz and 123.100 MHz are author-

ized for use by aircraft engaged inseach and rescue activities in accord-ance with subpart M. These frequenciesmay be used for air-air and air-groundcommunications.

(g) The frequency 4125 kHz may beused for distress and safety commu-nications between aircraft and ship andcoast maritime mobile stations.

(h) The frequency 8364.0 kHz is au-thorized for use of survival craft forsearch and rescue communicationswith stations in the maritime mobileservice.

(i) The frequencies in the band121.975–122.675 MHz are authorized foruse by private aircraft of air trafficcontrol operations.

(1) The frequencies 122.00 and 122.050MHz are authorized for use by air car-rier and private aircraft stations forenroute flight advisory service (EFAS)provided by the FAA;

(2) The frequency 122.100 MHz is au-thorized for use by air carrier aircraftstations for air traffic control oper-ations at locations in Alaska whereother frequencies are not available forair traffic control.

(j) The frequency 122.750 MHz isauthoried for use by private fixed wingaircraft for air-air communications.The frequency 123.025 MHz is author-ized for use by helicopters for air-airCommunications.

(k) The frequencies 121.500 MHz and243.000 MHz are emergency and distressfrequences available for use by survivalcraft stations, emergency locatortransmitters and equipment used forsurvival pruposes. Use of 121.500 MHzand 243.00 MHz shall be limited totransmission of signals and commu-nications for survival purposes. TypeA2A, A3E or A3N emission may be em-ployed, except in the case of emergencylocator transmitters where A3E, A3Xand NON are permitted.

(l) The frequencies 156.300, 156.375,156,400, 156,425, 156.450, 156.625, 156.800156.900 and 157.425 MHz may be used byaircraft stations to communicate withship stations in accordance with part80 and the following conditions:

(1) The altitude of aircraft stationsmust not exceed 300 meters (1,000 feet),except for reconnaissance aircraft par-ticipating in icebreaking operations


216

47 CFR Ch. I (10–1–97 Edition)§ 87.187

where an altitude of 450 meters (1,500feet) is allowed;

(2) Aircraft station transmitterpower must not exceed five watts;

(3) The frequency 156.300 MHz may beused for safety purposes only. The fre-quency 156.800 MHz may be used for dis-tress, safety and calling purposes only.

(4) Except in the Great Lakes andalong the St. Lawrence Seaway the fre-quency 157.425 MHz is available forcommunications with commerical fish-ing vessels.

(5) The frequency 156.375 MHz cannotbe used in the New Orleans, LA, VTSprotection area. No harmful inter-ference shall be caused to the VTS.

(m) The frequency 406.025 MHz is anemergency and distress frequencyavailable for use by emergency locatortransmitters. Use of this frequencymust be limited to transmission of dis-tress and safety communications.

(n) The frequency band 960–1215 MHzis for the use of airborne electronicaids to air navigation and directly as-sociated land stations.

(o) The frequency band 1300-1350 MHzis for surveillance radar stations andassociated airborne transponders.

(p) The frequency band 1435–1525 MHzis available on a primary basis and the1525–1535 MHz is available on a second-ary basis for telemetry and tele-command associated with the flighttesting of aircraft, missiles, or relatedmajor components. This includeslaunching into space, reentry into theearth’s atmosphere and incidental or-biting prior to reentry. The followingfrequencies are shared with flight te-lemetry mobile stations: 1444.5, 1453.5,1501.5, 1515.5, 1524.5 and 1525.5 MHz. See§ 87.303(d).

NOTE: Aeronautical telemetry operationsmust protect mobile-satellite operations inthe 1525–2535 MHz band and maritime mobile-satellite operations in the 1530–1535 MHzband.

(q) The frequencies in the band1545.000–1559.000 MHz and 1646.500–1660.500 MHz are authorized for use bythe Aeronautical Mobile-Satellite (R)Service. The use of the bands 1544.000–1545.000 MHz (space-to-Earth) and1645.500–1646.500 MHz (Earth-to-space)by the Mobile-Satellite Service is lim-ited to distress and safety operations.In the frequency bands 1549.500–1558.500

MHz and 1651.000–1660.000 MHz, theAeronautical Mobile-Satellite (R) re-quirements that cannot be accommo-dated in the 1545.000–1549.500 MHz,1558.500–1559.000 MHz, 1646.500–1651.000MHz, and 1660.000–1660.500 MHz bandsshall have priority access with real-time preemptive capability for commu-nications in the Mobile-Satellite serv-ice. Systems not interoperable with theAeronautical Mobile-Satellite (R) Serv-ice shall operate on a secondary basis.Account shall be taken of the priorityof safety-related communications inthe Mobile-Satellite Service.

(r) The frequency band 1559–1626.5MHz is available for airborne elec-tronic aids to air navigation and anyassociated land station.

(s) The frequency band 4200–4400 MHzis reserved exclusively for radio altim-eters.

(t) The frequency band 5350–5470 MHzin the aeronautical radionavigationservice is limited to airborne radarsand associated airborne beacons.

(u) The frequency band 8750–8850 MHzis available for use by airborne dopplerradars in the aeronautical radio-navigation service only on the condi-tion that they must accept any inter-ference which may be experienced fromstations in the radiolocation service inthe band 8500–10,000 MHz.

(v) The frequency band 9300–9500 MHzis limited to airborne radars and asso-ciated airborne beacons.

(w) The frequency band 13250–13400MHz available for airborne dopplerradar use.

(x) The frequency bands 14000–14400,24250–25250, 31800–33400 MHz are avail-able for airborne radionavigation de-vices.

(y) Brief keyed RF signals (keyingthe transmitter by momentarily de-pressing the microphone ‘‘push-to-talk’’ button) may be transmitted fromaircraft for the control of airport lightson the following frequencies:

(1) Any air traffic control frequencylisted in § 87.421.

(2) FAA Flight Service Station fre-quencies 121.975–122.675 MHz.

(3) The unicom frequencies 122.700,122.725, 122.800, 122.950, 122.975, 123.000,123.050 and 123.075 MHz.

(4) Aviation support station fre-quencies listed in § 87.232(b): 121.950,


217


1 Until further notice this frequency isavailable for air-to-air use as described inthe Grand Canyon vicinity. Availability is aresult of the FAA’s assignment of this fre-quency. If the FAA reassigns this frequencythe Commission may require air-to-air use tocease.

123.300 and 123.500 MHz if the frequencyis assigned to a station at the airportand no harmful interference is causedto voice communications. If no suchstation is located at the concerned air-port, aircraft may use one of the avia-tion support station frequencies for thecontrol of airport lights.

(5) The frequency 122.9 MHz when itis used as the common traffic advisoryfrequency at the concerned airport.

(z) Frequencies for public correspond-ence between ships and public coaststations in the maritime mobile serv-ice (except frequencies in the 156–174MHz band) and coast earth stations inthe maritime mobile-satellite serviceare available for public correspondencebetween aircraft and public coast sta-tions and coast earth stations, respec-tively. The transmission of public cor-respondence from aircraft must notcause interference to maritime com-munications.

(aa) Frequencies in the 454.675–459.975MHz band are available in the PublicMobile Radio Service (part 22) for useon board aircraft for communicationswith land mobile stations which areinterconnected to the nationwide pub-lic telephone system.

(bb) The frequencies 121.950 MHz,122.850 MHz and 127.050 1 MHz are au-thorized for air-to-air use for aircraftup to and including 3 km (10,000 ft)mean sea level in the vicinity of GrandCanyon National Park in Arizona with-in the area bounded by the followingcoordinates:36–28–00 N. Lat; 112–47–00 W. Long.36–28–00 N. Lat; 112–48–00 W. Long.35–50–00 N. Lat; 112–48–00 W. Long.35–43–00 N. Lat; 112–47–00 W. Long.

(cc) The frequency 120.650 1 MHz is au-thorized for air-to-air use for aircraftup to and including 3 km (10,000 ft)mean sea level within the area boundedby the following coordinates:35–59–45 N. Lat; 114–51–45 W. Long.36–09–30 N. Lat; 114–50–00 W. Long.36–09–30 N. Lat; 114–02–55 W. Long.35–54–45 N. Lat; 113–48–45 W. Long.

35–54–45 N. Lat; 114–41–45 W. Long.

[53 FR 28940, Aug. 1, 1988, as amended at 54FR 23214, May 31, 1989; 54 FR 49995, Dec. 4,1989; 55 FR 7333, Mar. 1, 1990; 56 FR 11518,Mar. 19, 1991; 56 FR 18525, Apr. 23, 1991; 57 FR45750, Oct. 5, 1992; 58 FR 30127, May 26, 1993;58 FR 44954, Aug. 25, 1993; 58 FR 52021, Oct. 6,1993; 60 FR 37829, July 24, 1995; 60 FR 40227,Aug. 7, 1995]

§ 87.189 Requirements for public cor-respondence equipment and oper-ations.

(a) Transmitters used for public cor-respondence by aircraft stations in themaritime mobile frequency bands mustbe authorized by the Commission inconformity with part 80 of this chapter.

(b) Transmitters used for public cor-respondence by aircraft stations in theAeronautical Mobile-Satellite (R) orMaritime Mobile-Satellite frequenciesmust be type-accepted by the Commis-sion in conformity with part 87. Air-craft earth stations that are requiredto be commissioned to use a privatelyowned satellite system also must meetthe provisions of § 87.51.

(c) A continuous watch must bemaintained on the frequencies used forsafety and regularity of flight whilepublic correspondence communicationsare being handled. For aircraft earthstations, this requirement is satisfiedby compliance with the priority andpreemptive access requirements of§ 87.187(p).

(d) All communications in the Aero-nautical Mobile Service and the Aero-nautical Mobile-Satellite (R) Servicehave priority over public correspond-ence.

(e) Transmission of public cor-respondence must be suspended whensuch operation will delay or interferewith message pertaining to safety oflife and property or regularity offlight, or when ordered by the captainof the aircraft.


§ 87.191 Foreign aircraft stations.(a) Aircraft of member States of the

International Civil Aviation Organiza-tion may carry and operate radiotransmitters in the United States air-space only if a license has been issuedby the State in which the aircraft is


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47 CFR Ch. I (10–1–97 Edition)§ 87.193

registered and the flight crew is pro-vided with a radio operator license ofthe proper class, issued or recognizedby the State in which the aircraft isregistered. The use of radio transmit-ters in the United States airspace mustcomply with these rules and regula-tions.

(b) Notwithstanding paragraph (a) ofthis section where an agreement with aforeign government has been enteredinto with respect to aircraft registeredin the United States but operated byan aircraft operator who is subject toregulation by that foreign government,the aircraft radio station license andaircraft radio operator license may beissued by such foreign government.

EMERGENCY LOCATOR TRANSMITTERS


Transmissions by emergency locatortransmitters (ELTs) are intended to beactuated manually or automaticallyand operated automatically as part ofan aircraft or a survival craft stationas a locating aid for survival purposes.


(a) ELTs transmit on the frequency121.500 MHz, using A3E, A3X or NONemission. ELTs that transmit on thefrequency 406.025 MHz use G1D emis-sion.

(b) The frequency 243.000 MHz is anemergency and distress frequencyavailable for use by survival craft sta-tions, ELTs and equipment used forsurvival purposes which are alsoequipped to transmit on the frequency121.500 MHz. Use of 243.000 MHz must belimited to transmission of signals andcommunications for survival purposes.In the case of ELTs use of A3E, A3X orNON emission is permitted.

[53 FR 28940, Aug. 1, 1988, as amended at 56FR 11518, Mar. 19, 1991; 58 FR 30128, May 26,1993]

§ 87.197 ELT test procedures.

ELT testing must avoid outside radi-ation. Bench and ground tests con-ducted outside of an RF-shielded enclo-sure must be conducted with the ELTterminated into a dummy load.

§ 87.199 Special requirements for406.025 MHz ELTs.

(a) Except for the spurious emissionlimits specified in § 87.139(h), 406.025MHz ELTs must meet all the technicaland performance standards containedin the Radio Technical Commission forAeronautics document titled ‘‘Mini-mum Operational Performance Stand-ards 406 MHz Emergency LocatorTransmitters (ELT)’’ Document NoRTCA/DO–204 dated September 29, 1989.This RTCA document is incorporatedby reference in accordance with 5U.S.C. 552(a), and 1 CFR part 51. Copiesof the document are available and maybe obtained from the Radio TechnicalCommission of Aeronautics, OneMcPherson Square, 1425 K Street NW.,Washington, DC, 20005. The documentis available for inspection at Commis-sion headquarters at 1919 M StreetNW., Washington, DC 20554. Copies mayalso be inspected at the Office of theFederal Register, 800 North CapitalStreet NW., suite 700, Washington, DC.

(b) The 406.025 MHz ELT must con-tain as an integral part a homing bea-con operating only on 121.500 MHz thatmeets all the requirements described inthe RTCA Recommended Standardsdocument described in paragraph (a) ofthis section. The 121.500 MHz homingbeacon must have a continuous dutycycle that may be interrupted duringthe transmission of the 406.025 MHz sig-nal only.

(c) Prior to submitting a notificationapplication of a 406.025 MHz ELT, theELT must be certified by a test facilityrecognized by one of the COSPAS/SARSAT Partners that the equipmentsatisfies the design characteristics as-sociated with the COSPAS/SARSATdocument COSPAS/SARSAT 406 MHzDistress Beacon Type Approval Stand-ard (C/S T.007). Additionally, an inde-pendent test facility must certify thatthe ELT complies with the electricaland environmental standards associ-ated with the RTCA RecommendedStandards.

(d) The procedures for obtaining agrant of notification from the Commis-sion are contained in subpart J of part2 of this chapter.

(e) An identification code, issued bythe National Oceanic and AtmosphericAdministration (NOAA), the United


219


States Program Manager for the 406.025MHz COSPAS/SARSAT satellite sys-tem, must be programmed in each ELTunit to establish a unique identifica-tion for each ELT station. With eachmarketable ELT unit the manufactureror grantee must include a postage pre-paid registration card printed with theELT identification code addressed to:NOAA/NESDIS, SARSAT OperationsDivision, E/SP3, Federal Building 4,Washington, DC 20233. The registrationcard must request the owner’s name,address, telephone number, type of air-craft, alternate emergency contact andinclude the following statement:‘‘WARNING—failure to register thisELT with NOAA before installationcould result in a monetary forfeiturebeing issued to the owner.’’

(f) To enhance protection of life andproperty it is mandatory that each406.025 MHz ELT must be registeredwith NOAA before installation andthat information be kept up-to-date. Inaddition to the identification plate orlabel requirements contained in §§ 2.925,2.926 and 2.1003 of this chapter, each406.025 MHz ELT must be provided onthe outside with a clearly discernablepermanent plate or label containingthe following statement: ‘‘The owner ofthis 406.025 MHz ELT must register theNOAA identification code contained onthis label with the National Oceanicand Atmospheric Administration(NOAA) whose address is: NOAA,NOAA/SARSAT Operations Division, E/SP3, Federal Building 4, Washington,D.C. 20233.’’ Aircraft owners shall ad-vise NOAA in writing upon change ofaircraft or ELT ownership, or anyother change in registration informa-tion. Fleet operators must notifyNOAA upon transfer of ELT to anotheraircraft outside of the owners control,or an other change in registration in-formation. NOAA will provide reg-istrants with proof of registration andchange of registration postcards.

(g) For 406.025 MHz ELTs whose iden-tification code can be changed aftermanufacture, the identification codeshown on the plant or label must beeasily replaceable using commonlyavailable tools.

[58 FR 30128, May 26, 1993, as amended at 59FR 35269, July 11, 1994]

Subpart G—Aeronautical AdvisoryStations (Unicoms)

§ 87.213 Scope of service.(a) An aeronautical advisory station

(unicom) must provide service to anyaircraft station upon request and with-out discrimination. A unicom mustprovide impartial information concern-ing available ground services.

(b)(1) Unicom transmissions must belimited to the necessities of safe andexpeditious operation of aircraft suchas condition of runways, types of fuelavailable, wind conditions, weather in-formation, dispatching, or other nec-essary information. At any airport atwhich a control tower, control towerremote communications outlet station(RCO) or FAA flight service station islocated, unicoms must not transmit in-formation pertaining to the conditionsof runways, wind conditions, or weath-er information during the hours of op-eration of the control tower, RCO orFAA service station.

(2) On a secondary basis, unicomsmay transmit communications whichpertain to the efficient portal-to-portaltransit of an aircraft, such as requestsfor ground transportation, food or lodg-ing.

(3) Communications between unicomsand air carrier must be limited to thenecessities of safety of life and prop-erty.

(4) Unicoms may communicate withaeronautical utility stations andground vehicles concerning runwayconditions and safety hazards on theairport when neither a control towernor FAA flight service station is in op-eration.

(c) Unicoms must not be used for airtraffic control (ATC) purposes otherthan to relay ATC information betweenthe pilot and air traffic controller. Re-laying of ATC information is limited tothe following:

(1) Revisions of proposed departuretime;

(2) Takeoff, arrival or flight plan can-cellation time;

(3) ATC clearances, provided a letterof agreement is obtained from the FAAby the licensee of the unicom.

[53 FR 28940, Aug. 1, 1988, as amended at 55FR 30464, July 26, 1990]


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47 CFR Ch. I (10–1–97 Edition)§ 87.215

§ 87.215 Supplemental eligibility.(a) A unicom and any associated dis-

patch or control points must be locatedon the airport to be served.

(b) Only one unicom will be author-ized to operate at an airport whichdoes not have a control tower, RCO orFAA flight service station. At an air-port which has a part-time or full-timecontrol tower, RCO or FAA flight serv-ice station, the one unicom limitationdoes not apply and the airport operatorand all aviation services organizationsmay be licensed to operate a unicom onthe assigned frequency.

(c) At an airport where only oneunicom may be licensed, when theCommission believes that the unicomhas been abandoned or has ceased oper-ation, another unicom may be licensedon an interim basis pending final deter-mination of the status of the originalunicom. An applicant for an interim li-cense must notify the present licenseeand must comply with the notice re-quirements of paragraph (d) of this sec-tion.

(d) An applicant for a unicom license,renewal or modification of frequencyassignment at an airport which doesnot have a control tower, RCO or FAAflight service station must notify inwriting the owner of the airport and allaviation service organizations locatedat the airport. The notice must includethe applicant’s name and address, thename of the airport and a statementthat the applicant intends to file an ap-plication with the Commission for aunicom. The notice must be givenwithin the ten days preceding the filingof the application with the Commis-sion. Each applicant must submit astatement that either notice has beengiven and include the date of notifica-tion, or notice is not required becausethe applicant owns the airport andthere are no organizations that shouldbe notified.


§ 87.217 Frequencies.(a) Only one unicom frequency will

be assigned at any one airport. TheCommission will assign a frequencybased on maximum geographic co-channel separation. However, appli-

cants may request a particular fre-quency which will be taken into con-sideration when the assignment ismade. The frequencies assignable tounicoms are:

(1) 122.950 MHz at airports which havea full-time control tower or full-timeFAA flight service station.

(2) 122.700, 122.725, 122.800, 122.975,123.000, 123.050 or 123.075 MHz at allother airports.

(b) 121.500 MHz: emergency and dis-tress only.

[53 FR 28940, Aug. 1, 1988, as amended at 55FR 30464, July 26, 1990; 58 FR 67696, Dec. 22,1993]

Subpart H—AeronauticalMulticom Stations


(a) The communications of an aero-nautical multicom station (multicom)must pertain to activities of a tem-porary, seasonal or emergency natureinvolving aircraft in flight. Commu-nications are limited to directing orcoordinating ground activities fromthe air or aerial activities from theground. Air-to-air communications willbe authorized if the communicationsare directly connected with the air-to-ground or ground-to-air activities de-scribed above. Multicom communica-tions must not include those air/groundcommunications provided for elsewherein this part.

(b) If there is not unicom and an ap-plicant is unable to meet the require-ments for a unicom license, the appli-cant will be eligible for a multicom li-cense.

(1) The multicom license becomes in-valid when a unicom is established atthe landing area.

(2) Multicoms must not be used forATC purposes other than the relay ofATC information between the pilot andair traffic controller. Relaying of ATCinformation is limited to the following:

(i) Revisions of proposed departuretime;

(ii) Takeoff, arrival flight plan can-cellation time;

(iii) ATC clearances, provided a let-ter of agreement is obtained from theFAA by the licensee of the multicom.


221


(3) Communications by a multicommust be limited to the safe and expedi-tious operation of private aircraft, per-taining to the conditions of runways,types of fuel available, wind condi-tions, weather information, dispatch-ing or other information. On a second-ary basis, multicoms may transmitcommunictions which pertain to effi-cient portal-to-portal transit of an air-craft such as requests for ground trans-portation, food or lodging.

§ 87.239 Supplemental eligibility.An application for a multicom must

include a showing demonstrating whysuch a station is necessary, based onthe scope of service defined above.

§ 87.241 Frequencies.(a) 121.500 MHz: emergency and dis-

tress only;(b) 122.850 or 122.900 MHz;(c) 122.925 MHz: available for assign-

ment to communicate with aircraftwhen coordinating foresty manage-ment and fire suppression, fish andgame management and protection, andenvironmental monitoring and protec-tion.

Subpart I—Aeronautical Enrouteand Aeronautical Fixed Stations

AERONAUTICAL ENROUTE STATIONS

§ 87.261 Scope of service.(a) Aeronautical enroute stations

provide operational control commu-nications to aircraft along domestic orinternational air routes. Operationalcontrol communications include thesafe, efficient and economical oper-ation of aircraft, such as fuel, weather,position reports, aircraft performance,and essential services and supplies.Public correspondence is prohibited.

(b) Service must be provided to anyaircraft station licensee who makes co-operative arrangements for the oper-ation, maintenance and liability of thestations which are to furnish enrouteservice. In emergency or distress situa-tions service must be provided withoutprior arrangements.

(c) Except in Alaska, only one aero-nautical enroute station licensee willbe authorized at any one location. InAlaska, only one aeronautical enroute

station licensee in the domestic serviceand one aeronautical enroute stationlicensee in the international servicewill be authorized at any one location.(Because enroute stations may provideservice over a large area containing anumber of air routes or only providecommunications in the local area of anairport, location here means the areawhich can be adequately served by theparticular station.)

(d) In Alaska, only stations whichserve scheduled air carriers will be li-censed to operate aeronautical enroutestations. Applicants must show thatthe station will provide communica-tions only along routes served byscheduled air carriers.


(a) Domestic VHF service. (1) The fre-quencies in the 128.825–132.000 MHz bandand the frequencies 136.500 MHz, 136.525MHz, 136.550 MHz, 136.575 MHz, 136.625MHz, 136.600 MHz, 136.625 MHz, 136.650MHz, 136.675 MHz, 136.700 MHz and136.725 MHz are available to serve do-mestic routes. The frequencies 136.900MHz, 136.925 MHz, 136.950 MHz and136.975 MHz are available to serve do-mestic and international routes. Thefrequencies 136.750 MHz, 136.775 MHz,136.800 MHz, 136.825 MHz, 136.850 MHzand 136.875 MHz are also available toenroute stations located at least 288kilometers (180 miles) from the Gulf ofMexico shoreline (outside the Gulf ofMexico Region). Frequency assign-ments are based on 25 kHz spacing. Useof these frequencies must be compat-ible with existing operations and mustbe in accordance with pertinent inter-national treaties and agreements.

(2) A system or network of inter-connected enroute stations may em-ploy offset carrier techniques on thefrequencies listed in paragraph (a)(1).The carrier frequencies of the individ-ual transmitters must not be offset bymore than ±8kHz.

(3) The frequencies 122.825 and 122.875MHz are available for assignment toenroute stations which provide localarea service to aircraft approaching ordeparting a particular airport. Thesefrequencies will be assigned without re-gard to the restrictions contained in§ 87.261 (c) and (d). Only organizations


222

47 CFR Ch. I (10–1–97 Edition)§ 87.263

operating aircraft with a maximum ca-pacity of 56 passengers or 8,200 kg(18,000 lbs) cargo will be authorized useof these enroute frequencies.

(4) In Alaska, the frequencies 131.500,131.600, 131.800 and 131.900 MHz may beassigned to aeronautical enroute sta-tions without regard to the restrictionscontained in § 87.261 (c) and (d).

(5) The frequencies 136.750 MHz,136.775 MHz, 136.800 MHz, 136.825 MHz,136.850 MHz and 136.875 MHz are avail-able in the Gulf of Mexico Region toserve domestic routes over the Gulf ofMexico and adjacent coastal areas. As-signment of these six frequencies is re-served until January 1, 1994, for heli-copter flight following systems. Appli-cants must provide a showing of needfor all frequencies requested. Assign-ment of these six frequencies in theGulf of Mexico Region is not subject tothe conditions contained in § 87.261(c)and paragraph (a)(2) of this section.Frequency assignments are based on 25kHz spacing. Use of these frequenciesmust be compatible with existing oper-ations and must be in accordance withpertinent international treaties andagreements. For the purpose of thisparagraph, the Gulf of Mexico Regionis defined as an area bounded on theeast, north and west by a line 288 km(180 miles) inland from the Gulf of Mex-ico shoreline. Inland stations usingthese frequencies must be located with-in forty-eight kilometers (30 miles) ofthe Gulf of Mexico shoreline.

(b) Domestic HF service. (1) Regularuse of high frequencies for aeronauticalenroute or any aeronautical mobile (R)communications in the domestic serv-ice within the continental UnitedStates (excluding Alaska) will not beauthorized.

(2) These frequencies (carrier) areavailable for assignment to serve air-craft operating in support of offshoredrilling operations in open sea areasbeyond the range of VHF propagation:

kHz2878.0 4672.03019.0 5463.03434.0 5508.0

(3) Alaska: The following frequencies(carrier) are available for assignmentto serve domestic air routes in theAlaska area:

(i) Throughout Alaska: Shared withthe FAA and assigned where an appli-cant shows the need for a service notprovided by the FAA.

kHz2866.0 5631.0

(ii) Alaska Aleutian chain and feeders.

kHz2911.0 8855.02956.0 10066.05496.0 11363.06580.0

(iii) Central and Southeast Alaska andfeeders.

kHz2875.0 6580.02911.0 6604.03470.0 8876.05484.0 11357.0

(iv) The following frequencies (car-rier) are available to enroute stationsin Alaska without regard to the re-strictions contained in § 87.261 (c) or(d). These frequencies may also be usedfor communications between enroutestations concerning matters directlyaffecting aircraft with which they areengaged. Enroute stations located atan uncontrolled airport shall not trans-mit information concerning runway,wind or weather conditions during theoperating hours of a unicom.

kHz

3449.0 5472.05167.5 1 5490.0

1 The frequency 5167.5 kHz is available to any sta-tion for emergency communications in Alaska. Noairborne operations are permitted. Peak envelopepower of stations operating on this frequency mustnot exceed 150 watts. This frequency may also beused by Alaska private fixed stations for callingpurposes, but only for establishingcommunications.

(c) International VHF service. Fre-quencies in the 128.825–132.000 and136.000–137.000 MHz bands are availableto enroute stations serving inter-national flight operations. Frequencyassignments are based on 25 kHz chan-nel spacing. Proposed operations mustbe compatible with existing operationsin the band.

(d) International HF service. High fre-quencies (carrier) available to enroutestations serving international flight


223


operations on the Major World AirRoute Areas (MWARA’s), as defined inthe international Radio Regulationsand the ICAO Assignment Plan, are:

(1) Central East Pacific (CEP):

kHz2869.0 8843.03413.0 10057.04657.0 11282.05547.0 13300.05574.0 17904.06673.0

(2) Central West Pacific (CWP):

kHz

2998.0 6562.03455.0 8903.04666.0 10081.05652.0 11384.05661.0 13300.06532.0 17904.0

(3) North Pacific (NP):

kHz

2932.0 10048.05628.0 11330.06655.0 13300.06661.0 17904.0

(4) South Pacific (SP):

kHz

3467.0 10084.05559.0 11327.05643.0 13300.08867.0 17904.0

(5) North Atlantic (NAT):

kHz

2872.0 8825.02899.0 8831.02962.0 8864.02971.0 8879.03016.0 8891.03476.0 8906.04675.0 11279.05598.0 11309.05616.0 11336.05649.0 13291.06622.0 13306.06628.0 17946.0

(6) Europe (EUR):

kHz

3479.0 10084.05661.0 13288.0

kHz—Continued6598.0 17961.0

(7) South America (SAM):

kHz2944.0 10024.03479.0 10096.04669.0 11360.05526.0 13297.06649.0 17907.08855.0

(8) South Atlantic (SAT):

kHz2854.0 8861.02935.0 11291.03452.0 13315.05565.0 13357.06535.0 17955.0

(9) Southeast Asia (SEA):

kHz3470.0 10066.03485.0 11396.05649.0 13309.05655.0 13318.06556.0 17907.08942.0

(10) East Asia (EA):

kHz3016.0 10042.03485.0 11396.03491.0 13297.05655.0 13303.05670.0 13309.06571.0 17907.08897.0

(11) Middle East (MID):

kHz

2944.0 6631.02992.0 8918.03467.0 8951.03473.0 10018.04669.0 11375.05658.0 13288.05667.0 13312.06625.0 17961.0

(12) Africa (AFI):

kHz

2851.0 6673.02878.0 8894.03419.0 8903.0


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47 CFR Ch. I (10–1–97 Edition)§ 87.265

kHz—Continued3425.0 8894.03467.0 11300.04657.0 11330.05493.0 13273.05652.0 13288.05658.0 13294.06559.0 17961.06574.0

(13) Indian Ocean (INO):

kHz

3476.0 13306.05634.0 17961.08879.0

(14) North Central Asia (NCA):

kHz

3004.0 6592.03019.0 10096.04678.0 13303.05646.0 13315.05664.0 17958.0

(15) Caribbean (CAR):

kHz

2887.0 8846.03455.0 8918.05520.0 11387.05550.0 11396.06577.0 13297.06586.0 17907.0

(e) Long distance operational control.Long distance operational control fre-quencies provide communications be-tween aeronautical enroute stationsand aircraft stations anywhere in theworld for control of the regularity andefficiency of flight and safety of air-craft. World-wide frequencies are notassigned by administrations forMWARA and Regional and DomesticAir Route Area (RDARA).

kHz

3013.0 10075.03494.0 11342.05529.0 11348.05538.0 13330.06637.0 13348.06640.0 17925.08933.0 21964.010033.0

(f) 121.500 MHz: Emergency and dis-tress only.

[53 FR 28940, Aug. 1, 1988, as amended at 54FR 11721, Mar. 22, 1989; 55 FR 28628, July 12,1990; 56 FR 21084, May 7, 1991; 58 FR 44954,Aug. 25, 1993]

§ 87.265 Administrative communica-tions.

Domestic VHF aeronautical enroutestations authorized to use A9W emis-sion on any frequency listed in§ 87.263(a)(1) or § 87.263(a)(3) may trans-mit digital administrative communica-tions on a secondary basis, in additionto the operational and control commu-nications routinely permitted under§ 87.261(a) above. Such secondary ad-ministrative communications must di-rectly relate to the business of a par-ticipating aircraft operator in provid-ing travel and transportation servicesto the flying public or to the travel,transportation or scheduling activitiesof the aircraft operator itself. Stationstransmitting administrative commu-nications must provide absolute prior-ity for operational control and othersafety communications by means of anautomatic priority control system.

[54 FR 11721, Mar. 22, 1989]

AERONAUTICAL FIXED STATIONS


Aeronautical fixed stations providenon-public point-to-point communica-tions service pertaining to safety, regu-larity and economy of flight. Thesestations must transmit, without dis-crimination, messages from aircraftwhich have entered into cooperativearrangements governing the operationand maintenance of such stations.Aeronautical fixed station licenseesare required to transmit, withoutcharge or discrimination, all emer-gency communications.

§ 87.277 Supplemental eligibility.

Aeronautical fixed station licenseswill only be issued to the licensees ofassociated aeronautical enroute sta-tions. Aeronautical fixed station li-censes will not be issued where ade-quate land line facilities are available.


225



(a) United States (except Alaska). Theapplicant must request specific fre-quencies in accordance with § 2.106 ofthis chapter. The Commission will de-termine the suitability of the appli-cant’s selection based on the prob-ability of interference to and from ex-isting services assigned on the same oradjacent frequencies. All new assign-ments of frequencies will be subject tosuch conditions as may be required tominimize the possibility of harmful in-terference to existing services.

(b) Alaska. (1) Only stations whichserve scheduled air carriers will be li-censed. Applicants must show that thestation will provide communicationsonly along routes served by the sched-uled operations of such carriers.

(2) The following frequencies areavailable in Alaska. These frequencieswill only be licensed in conjunctionwith licenses for use of the aeronauti-cal enroute frequencies specified in§ 87.263(c).

kHz

2648.0 5310.04645.0 5887.54947.5 8015.05122.5

(c) Gulf of Mexico. In addition to theprovisions of paragraph (a) of this sec-tion, the frequencies 4550.0 and 5036.0kHz are available in the Gulf of Mex-ico.

Subpart J—Flight Test Stations


The use of flight test stations is re-stricted to the transmission of nec-essary information or instructions re-lating directly to tests of aircraft orcomponents thereof.


(a) The following entities are eligiblefor flight test station licenses:

(1) Manufacturers of aircraft ormajor aircraft components;

(2) A parent corporation or its sub-sidiary if either corporation is a manu-facturer of aircraft or major aircraftcomponents; or

(3) Educational institutions and per-sons primarily engaged in the design,development, modification, and flighttest evaluation of aircraft or major air-craft components.

(b) Each application must be accom-panied by a statement containing factssufficient to establish the applicant’seligibility under the criteria in para-graph (a) of this section.


(a) These frequencies are availablefor assignment to flight test land andaircraft stations:

3281.01 123.1752 123.2253 123.4002

123.2003 123.3753 123.4503

(b) These additional frequencies areavailable for assignment only to flighttest stations of aircraft manufacturers:

123.1252 123.2753 S123.4253 123.5503

123.1502 123.3253 S123.4753 123.5752

123.2503 123.3503 S123.5253

1 When R3E, H3E or J3E emission is used, the as-signed frequency will be 3282.4 kHz (3281.0 kHz car-rier frequency).

2 This frequency is available only to itinerant sta-tions that have a requirement to be periodicallytransferred to various locations.

3 Mobile station operations on these frequenciesare limited to an area within 320 km (200 mi) of anassociated flight test land station.

(c) These frequencies are availablefor equipment test, emergency andbackup use with aircraft beyond therange of VHF propagation. Either H2B,J3E, J7B or J9W emission may be used.

Frequencies (carrier) available kHz:

kHz

2851.0 8822.03004.0 10045.03443.0 11288.05451.0 11306.05469.0 13312.05571.0 17964.06550.0 21931.0

(d)(1) Frequencies in the bands 1435–1525 MHz and 2360–2390 MHz are as-signed primarily for telemetry andtelecommand operations associatedwith the flight testing of manned orunmanned aircraft and missiles, ortheir major components. The band1525–1535 MHz is also available for thesepurposes on a secondary basis. In theband 2320–2345 MHz, the mobile andradiolocation services are allocated on


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47 CFR Ch. I (10–1–97 Edition)§ 87.305

a primary basis until a Broadcast-Sat-ellite (sound) service has been broughtinto use in such a manner as to affector be affected by the mobile and radio-location services in those service areas.Permissible uses of these bands includetelemetry and telecommand trans-missions associated with the launchingand reentry into the earth’s atmos-phere as well as any incidental orbitingprior to reentry of manned or un-manned objects undergoing flight tests.In the 1435–1530 MHz band, the follow-ing frequencies are shared with flighttelemetry mobile stations: 1444.5,1453.5, 1501.5, 1515.5, 1524.5 and 1525.5MHz. In the 2320–2345 MHz and 2360–2390MHz bands, the following frequenciesmay be assigned on a co-equal basis fortelemetry and associated telecommandoperations in fully operational or ex-pendable and re-usable launch vehicleswhether or not such operations involveflight testing: 2332.5, 2364.5, 2370.5 and2382.5 MHz. In the 2360–2390 MHz band,all other telemetry and telecommanduses are secondary to the above statedlaunch vehicle uses.

(2) The authorized bandwidths forstations operating in the bands 1435.0–1525.0 MHz, 1525.0–1535.0 MHz and 2310.0–2390.0 MHz are normally 1, 3 or 5 MHz.Applications for greater bandwidthswill be considered in accordance withthe provisions of § 87.135. Each assign-ment will be centered on a frequencybetween 1435.5 MHz and 1534.5 MHz orbetween 2310.5 MHz and 2389.5 MHz,with 1 MHz channel spacing.

(e) 121.500 MHz: Emergency and dis-tress only.

[53 FR 28940, Aug. 1, 1988, as amended at 55FR 4175, Feb. 7, 1990; 58 FR 44954, Aug. 25,1993; 58 FR 67696, Dec. 22, 1993; 60 FR 37829,July 24, 1995; 62 FR 11107, Mar. 11, 1997]

§ 87.305 Frequency coordination.(a)(1) Each application for a new sta-

tion license, renewal or modification ofan existing license concerning flighttest frequencies, except as provided inparagraph (b) of this section, must beaccompanied by a statement from afrequency advisory committee. Thecommittee must comment on the fre-quencies requested or the proposedchanges in the authorized station andthe probable interference to existingstations. The committee must consider

all stations operating on the fre-quencies requested or assigned within320 km (200 mi) of the proposed area ofoperation and all prior coordinationsand assignments on the proposed fre-quency(ies). The committee must alsorecommend frequencies resulting inthe minimum interference. The Com-mittee must coordinate in writing allrequests for frequencies or proposed op-erating changes in the 1435–1535 MHzand 2310–2390 MHz bands with the re-sponsible Government Area FrequencyCoordinators listed in the NTIA ‘‘Man-ual of Regulations and Procedures forFederal Radio Frequency Manage-ment.’’ In addition, committee rec-ommendations may include commentson other technical factors and maycontain recommended restrictionswhich it believes should appear on thelicense.

(2) The frequency advisory commit-tee must be organized to represent allpersons who are eligible for non-Gov-ernment radio flight test stations. Astatement of organization service areaand composition of the committeemust be submitted to the Commissionfor approval. The functions of any advi-sory committee are purely advisory tothe applicant and the Commission, andits recommendations are not bindingupon either the applicant or the Com-mission.

(b) These applications need not be ac-companied by evidence of frequency co-ordination:

(1) Any application for modificationnot involving change in frequency(ies),power, emission, antenna height, an-tenna location or area of operation.

(2) Any application for 121.5 MHz.

[53 FR 28940, Aug. 1, 1988, as amended at 54FR 11721, Mar. 22, 1989; 58 FR 44954, Aug. 25,1993]

§ 87.307 Cooperative use of facilities.

(a) The Commission will license onlyone flight test land station per airport,except as provided in paragraph (d) ofthis section.

(b) Flight test land stations locatedat an airport are required to provideservice without discrimination, on acooperative maintenance basis, to any-one eligible for a flight test station li-cense.


227


(c) When the licensee of a flight testland station intends to conduct flighttests at an area served by anotherflight test land station, which may re-sult in interference, the licensees mustcoordinate their schedules in advance.If no agreement is reached, the Com-mission will determine the time divi-sion upon request by either licensee.

(d) An application for an additionalflight test land station at an airportwhere such a station is already author-ized must be accompanied by a factualshowing which must include the follow-ing:

(1) Reasons why shared use of thecurrently licensed flight test land sta-tion is not possible; and

(2) Results of coordination with thecurrent licensee of the flight test sta-tion at the airport demonstrating thatan additional station can be accommo-dated without significant degradationof the reliability of existing facilities.

Subpart K—Aviation SupportStations


Aviation support stations are usedfor the following types of operations:

(a) Pilot training;(b) Coordination of soaring activities

between gliders, tow aircraft and landstations;

(c) Coordination of activities betweenfree balloons or lighter-than-air air-craft and ground stations;

(d) Coordination between aircraft andaviation service organizations locatedon an airport concerning the safe andefficient portal-to-portal transit of theaircraft, such as the types of fuel andground services available; and

(e) Promotion of safety of life andproperty.


Each application must be accom-panied by a statement that the appli-cant is either the operator of a flyingschool or lighter-than-air aircraft, en-gaged in soaring or free ballooning ac-tivities, or the operator of an airportor an aviation service organization lo-cated on an airport.

§ 87.323 Frequencies.(a) 121.500 MHz: Emergency and dis-

tress only.(b) The frequencies 121.950, 123.300 and

123.500 MHz are available for assign-ment to aviation support stations usedfor pilot training, coordination oflighter-than-air aircraft operations, orcoordination of soaring or free balloon-ing activities. Applicants for 121.950MHz must coordinate their proposalwith the appropriate FAA RegionalSpectrum Management Office. A co-ordination statement must accompanythe application. Applicants for avia-tion support land stations may requestfrequency(ies) based upon their eligi-bility although the Commission re-serves the right to specify the fre-quency of assignment. Aviation sup-port mobile stations will be assigned123.300 and 123.500 MHz. However, avia-tion support mobile stations must op-erate only on a noninterference basisto communications between aircraftand aviation support land stations.

(c) The frequency 122.775 MHz and,secondary to aeronautical multicomstations, the frequency 122.850 MHz areavailable for assignment to aviationsupport stations. These frequenciesmay be used for communications be-tween aviation service organizationsand aircraft in the airport area. Thesefrequencies must not be used for airtraffic control purposes or to transmitinformation pertaining to runway,wind or weather conditions.

(d) The frequency 3281.0 kHz is avail-able for assignment to aviation supportstations used for coordination of light-er-than-air aircraft operations.

Subpart L—Aeronautical UtilityMobile Stations

§ 87.345 Scope of service.Aeronautical utility mobile stations

provide communications for vehiclesoperating on an airport movementarea. An airport movement area is de-fined as the runways, taxiways andother areas utilized for taxiing, takeoffand landing of aircraft, exclusive ofloading ramp and parking areas.

(a) An aeronautical utility mobilestation must monitor its assigned fre-quency during periods of operation.


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47 CFR Ch. I (10–1–97 Edition)§ 87.347

(b) At an airport which has a controltower, control tower remote commu-nications outlet station (RCO) or FAAflight service station in operation,communications by an aeronauticalutility mobile station are limited tothe management of ground vehiculartraffic.

(c) Aeronautical utility mobile sta-tions which operate on the airport’sunicom frequency or the frequency122.900 MHz are authorized only totransmit information relating to safe-ty, such as runway conditions and haz-ards on the airport. These stations areauthorized primarily for monitoringcommunications from and to aircraftapproaching or departing the airport.

(d) Transmissions by an aeronauticalutility mobile station are subject tothe control of the control tower, theFAA flight service station or theunicom, as appropriate. When re-quested by the control tower, the flightservice station or the unicom, an aero-nautical utility station must dis-continue transmitting immediately.

(e) Communications between aero-nautical utility mobile stations are notauthorized.

[53 FR 28940, Aug. 1, 1988, as amended at 55FR 7333, Mar. 1, 1990; 55 FR 30464, July 26,1990]

§ 87.347 Supplemental eligibility.(a) Aeronautical utility stations may

transmit on unicom frequencies only atairports which have a unicom and apart-time or no control tower, an RCOor an FAA flight service station.

(b) An applicant for an aeronauticalutility station operating on a unicomfrequency or the frequency 122.900 MHzmust:

(1) Demonstrate a need to routinelyoperate a ground vehicle on the airportmovement area;

(2) Identify the vehicle(s) in whichthe station is to be located; and

(3) Either attach a statement show-ing that the applicant is the airportowner or operator, or a state or localgovernmental aeronautical agency; orattach a statement from the airportowner or operator granting permissionto operate the vehicle on the airportmovement area.

(c) An applicant for an aeronauticalutility station requesting authority to

transmit on the local control (tower)frequency or on the control tower re-mote communications outlet (RCO)frequency must attach a copy of amemorandum of agreement betweenthe applicant and the Air Traffic Man-ager of the airport control tower thatapproves the requested use of the toweror RCO frequency.

[53 FR 28940, Aug. 1, 1988, as amended at 55FR 30464, July 26, 1990; 55 FR 30908, July 30,1990]

§ 87.349 Frequencies.(a) The frequency assigned to an

aeronautical utility station at an air-port served by a control tower, RCO orFAA flight service station is the fre-quency used by the control tower forground traffic control or by the flightservice station for communicationswith vehicles. In addition to theground control frequency, an aero-nautical utility station at an airportserved by a control tower or RCO maybe assigned the tower or RCO fre-quency if the assignment is specificallyapproved by the FAA as provided for in§ 87.347(c). The frequencies assigned arenormally from the band 121.600–121.925MHz.

(b) The frequency assigned to theunicom is available to aeronauticalutility stations on a noninterferencebasis at airports which have a part-time control tower, part-time RCO orpart-time FAA flight service stationand a unicom.

(c) At airports which have a unicombut no control tower, RCO or FAAflight service station, the frequency as-signed to the unicom is available toaeronautical utility stations on a non-interference basis. The frequenciesavailable for assignment to unicomsare described in subpart G of this part.

(d) At airports which have no controltower, RCO, flight service station orunicom, the frequency 122.900 MHz isavailable for assignment to aeronauti-cal utility stations.

[55 FR 30464, July 26, 1990, as amended at 55FR 30908, July 30, 1990]

§ 87.351 Frequency changes.When the aeronautical utility fre-

quency is required to be changed be-cause of an action by the FAA or the


229


Commission (such as a change in theground control of unicom frequency)the licensee must submit an applica-tion for modification to specify thenew frequency within 10 days from thedate the station begins operation onthe new frequency. The licensee hastemporary authority to use the newfrequency from the date of the changepending receipt of the modified license.

Subpart M—Aeronautical Searchand Rescue Stations


Aeronautical search and rescue landand mobile stations must be used onlyfor communications with aircraft andother aeronautical search and rescuestations engaged in search and rescueactivities. Aeronautical land searchand rescue stations can be moved fortemporary periods from a specified lo-cation to an area where actual or prac-tice search and rescue operations arebeing conducted.


Licenses for aeronautical search andrescue stations will be granted only togovernmental entities or private orga-nizations chartered to perform aero-nautical search and rescue functions.


(a) The frequency 123.100 MHz isavailable for assignment to aeronauti-cal search and rescue stations for ac-tual search and rescue missions. Eachsearch and rescue station must beequipped to operate on this frequency.

(b) The frequency 122.900 MHz isavailable for assignment to aeronauti-cal search and rescue stations for orga-nized search and rescue training andfor practice search and rescue mis-sions.

(c) The frequencies 3023.0 kHz and5680.0 kHz are available for assignmentto aircraft and ship stations for searchand rescue scene-of-action coordina-tion, including communications withparticipating land stations. Ship sta-tions communicating with aircraft sta-tions must employ 2K80J3E emission.

(d) 121.500 MHz: Emergency and dis-tress only.

Subpart N—EmergencyCommunications


This subpart provides the rules gov-erning operation of stations in theAviation Services during any nationalor local emergency situation constitut-ing a threat to national security orsafety of life and property. This sub-part is consistent with the Aeronauti-cal Emergency Communications Sys-tem Plan for all Aviation Services li-censees of the Commission which wasdeveloped pursuant to sections 1, 4(o),301 and 303 of the Communications Act,and Executive Order 11490, as amended.This Plan provides for emergency com-munications to meet the requirementsof the Plan for the Security Control ofAir Traffic and Air Navigation Aids(SCATANA), Civil Reserve Air Fleet(CRAF), War Air Service Program(WASP) and, where applicable, Stateand Regional Disaster Airlift Planning(SARDA).

§ 87.395 Plan for the Security Controlof Air Traffic and Air NavigationAids (Short Title: SCATANA).

(a) The Plan for the Security Controlof Air Traffic and Air Navigation Aids(SCATANA) is promulgated in further-ance of the Federal Aviation Act of1958, as amended, the CommunicationsAct and Executive Order 11490, asamended. SCATANA defines the re-sponsibilities of the Commission forthe security control of non-Federal airnavigation aids.

(b) Under the responsibilities definedin SCATANA, an FCC Support Plan forthe Security Control of Non-FederalAir Navigation Aids has been developedby the Commission. The FCC SupportPlan defines responsibilities, proce-dures, and instructions in consonancewith SCATANA which will effect con-trol of non-Federal air navigation aidswhen SCATANA is implemented. Itpermits the use of such navigation aidsby aircraft of military and civil agen-cies when SCATANA is implemented.The FCC Support Plan highlights thoseparts of SCATANA which deal specifi-cally with non-Federal air navigationaids. SCATANA and the FCC SupportPlan apply to radionavigation stations


230

47 CFR Ch. I (10–1–97 Edition)§ 87.397

authorized by the Commission in thefollowing manner:

(1) All licensees are subject to re-strictions imposed by appropriate mili-tary authorities pursuant to SCATANAand the FCC Support Plan when an AirDefense Emergency or Defense Emer-gency exists or is imminent. The re-strictions will be imposed through FAAAir Route Traffic Control Centers(ARTCCs).

(2) All licensees of aeronauticalradionavigation (VOR/DME, ILS, MLS,LF and MF non-directional beacons)stations will comply with SCATANAimplementation instructions from FAAARTCCs as follows:

(i) Shut down the above navigationaids as directed. These instructionswill permit time to land or disperseairborne aircraft, and will permit ex-tension of time when the air traffic sit-uation dictates.

(ii) Shut down as soon as possiblestations which require more than fiveminutes control time, unless directedotherwise or unless such stations areessential for the handling of existingair traffic.

(iii) Operate aeronautical radio-navigation stations to ensure that re-quired stations, as indicated in flightplans, will be available for authorizedaircraft flights.

(3) Licensees of aeronautical radio-navigation stations will be notified ofthe reduction or removal of SCATANArestrictions by FAA ARTCCs when no-tice of the termination is issued.

(4) Licensees of aeronautical radio-navigation stations may voluntarilyparticipate in SCATANA tests as re-quested by an ARTCC. SCATANA test-ing must not interrupt the normalservice of non-Federal air navigationaids.

§ 87.397 Emergency operations.

(a) The licensee of any land stationin the Aviation services, during a localemergency involving the safety of lifeand property may communicate in amanner other than that specified in thelicense (See § 87.395). Such emergencyoperations may include operation atother locations or with equipment notspecified in the license or by unli-censed personnel provided that:

(1) Such operations are under thecontrol and supervision of the stationlicensee,

(2) The emergency use is discon-tinued as soon as practicable upon ter-mination of the emergency,

(3) In no event shall any stationtransmit on frequencies other than orwith power in excess of that specifiedin the license,

(4) The details of the emergency mustbe retained with the station license,and

(5) At a controlled airport these com-munications must be coordinated withthe FAA.

(b) The unicom frequencies listed insubpart G may also be used for commu-nications with private aircraft engagedin organized civil defense activities inpreparation for, during an enemy at-tack or immediately after an enemyattack. When used for these purposes,unicoms may be moved from place toplace or operated at unspecified loca-tions, except at landing areas served byother unicoms or control towers.

(c) In any case in which a license forunattended operation has been granted,the Commission may at any time, fornational defense, modify the license.

Subpart O—Airport Control TowerStations


(a) Airport control tower stations(control towers) and control tower re-mote communications outlet stations(RCOs) must limit their communica-tions to the necessities of safe and ex-peditious operations of aircraft operat-ing on or in the vicinity of the airport.Control towers and RCOs provide airtraffic control services to aircraft land-ing, taking off and taxing on the air-port as well as aircraft transiting theairport traffic area. Additionally, con-trol towers and RCOs can provide airtraffic control services to vehicles op-erating on airport movement areas (seesubpart L of this part). Control towersand RCOs must serve all aircraft with-out discrimination. An RCO must beremotely operated from a controltower or other FAA control facility lo-cated at a nearby airport.


231


(b) A control tower must maintain acontinuous watch on the following fre-quencies during the hours of operation:

121.500 MHz3023.0 kHz (Alaska only)5680.0 kHz (Alaska only)

The Commission may exempt fromthese watch requirements the licenseeof an airport control tower station if asatisfactory showing has been madethat such an exemption will not ad-versely affect life and property in theair.

[53 FR 28940, Aug. 1, 1988, as amended at 54FR 11721, Mar. 22, 1989; 55 FR 30464, July 26,1990]

§ 87.419 Supplemental eligibility.(a) Only one control tower or RCO

will be licensed at an airport.(b) Each application for an RCO must

be accompanied by a written statementfrom the appropriate FAA Regional Of-fice approving the requested RCO oper-ation.

[55 FR 30464, July 26, 1990]

§ 87.421 Frequencies.The Commission will assign VHF fre-

quencies after coordination with theFAA. Frequencies in the followingbands are available to control towersand RCOs. Channel spacing is 25 kHz.

118.000–121.400 MHz121.600–121.925 MHz123.600–128.800 MHz132.025–135.975 MHz

(a) The frequency 123.100 MHz isavailable for use by control towers andRCOs at special aeronautical events onthe condition that no harmful inter-ference is caused to search and rescueoperations in the locale involved.

(b) Frequencies in the bands 200.0–285.0 and 325.0–405.0 kHz will only be as-signed to control towers and RCOs au-thorized to operate on at least oneVHF frequency, unless a showing hasbeen made that elimination of VHFservice will not adversely affect lifeand property in the air.

(c) Frequencies in the band 121.600–121.925 MHz are available to controltowers and RCOs for communicationswith ground vehicles and aircraft onthe ground. The antenna heights shallbe restricted to the minimum nec-

essary to achieve the required cov-erage. Channel spacing is 25 kHz.

(d) 121.500 MHz: emergency and dis-tress only.


§ 87.423 Hours of operation.

The control tower must render acommunications service 24 hours a dayunless a satisfactory showing has beenmade that elimination of such servicewill not adversely affect life and prop-erty in the air.

§ 87.425 Interference.

Control towers and RCOs must notcause harmful interference to controltowers or RCOs at adjacent airports. Ifinterference between adjacent controltowers or RCOs exists, the Commissionwill direct the licensees how to elimi-nate the interference.

[55 FR 30465, July 26, 1990]

Subpart P—Operational FixedStations


An operational fixed station providescontrol, repeater or relay functions forits associated aeronautical station.


An applicant for an operational fixedstation must show that:

(a) The applicant is the licensee of anaeronautical land station in the aero-nautical mobile service; and

(b) Common carrier facilities are notavailable to satisfy the aeronauticalstation’s requirements.


The following frequencies in the 72–76MHz band are assignable to operationalfixed stations using vertical polariza-tion, if no harmful interference iscaused to TV reception on Channels 4and 5. These frequencies are sharedwith the Land Mobile and the MaritimeMobile Services.


232

47 CFR Ch. I (10–1–97 Edition)§ 87.451

1 OET Bulletin No. 67, March 1988, entitled‘‘Potential Interference from Operational

Fixed Stations in the 72–76 MHz Band to Tel-evision Channels 4 and 5’’ describes an ana-lytical model that can be used to calculatethe potential interference that might resultfrom a given fixed station operation. Copiesof the bulletin may be obtained from theCommission’s current duplication contrac-tor. Information concerning the current du-plication contractor may be obtained fromthe Office of Public Affairs, Consumer As-sistance and Small Business Division, Tele-phone (202) 632–5050.

OPERATIONAL FREQUENCIES IN THE 72–76 MHZBAND

Carrier frequency in MHz

72.0272.0472.0672.0872.1072.1272.1472.1672.1872.2072.2272.2472.2672.2872.3072.3272.3472.3672.3872.4072.4272.4672.5072.5472.5872.6272.6472.6672.6872.7072.7272.7472.7672.78

72.8072.8272.8472.8672.8872.9072.9272.9472.9672.9875.4275.4675.5075.5475.5875.6275.6475.6675.6875.7075.7275.7475.7675.7875.8075.8275.8475.8675.8875.9075.9275.9475.9675.98

§ 87.451 Licensing limitations.Operational fixed stations are subject

to the following licensing limitations:(a) A maximum of four frequencies

will be assigned.(b) Stations will not be authorized

when applications indicate less than 16km (10 miles) separation between a pro-posed station and a TV transmitter op-erating on either Channel 4 or 5, orfrom the post office of a community inwhich either channel is assigned butnot in operation.

(c) Stations located between 16 km(10 miles) and 128 km (80 miles) of a TVtransmitter operating on either Chan-nel 4 or 5, or from the post office of acommunity in which either channel isassigned but not in operation, are sec-ondary to TV operations within theGrade B service contour.1

Subpart Q—Stations in theRadiodetermination Service


Stations in the aeronautical radio-determination service provide radio-navigation and radiolocation services.

(a) Transmission by radionavigationland stations must be limited to aero-nautical navigation, including obstruc-tion warning.

(b) Radionavigation land test sta-tions are used for the testing and cali-bration of aircraft navigational aidsand associated equipment. When usedas radionavigation land test stations(MTF) signal generators must be li-censed as radionavigation land teststations (MTF). Transmission must belimited to cases when radiation is nec-essary and there is no alternative.

(c) Transmissions by emergency loca-tor transmitter (ELT) test stationsmust be limited to necessary testing ofELTs and to training operations relat-ed to the use of such transmitters.



(a) Licenses for radionavigation landstations will be granted only to appli-cants who can justify the need for anaeronautical radionavigation servicewhen the Federal Aviation Administra-tion is not prepared to render this serv-ice.

(b) Licenses for radionavigation landtest stations (MTF) will be grantedonly to applicants engaged in the de-velopment, manufacture or mainte-nance of aircraft radionavigationequipment. Licenses for radio-navigation land test stations (OTF)will be granted only to applicants who


233


agree to establish the facility at an air-port for the use of the public.

(c) Licenses for ELT test stationswill be granted only to applicants totrain personnel in the operation and lo-cation of ELTs, or for testing relatedto the manufacture or design of ELTs.

§ 87.475 Frequencies.(a) Frequency coordination. The Com-

mission will assign frequencies toradionavigation land stations andradionavigation land test stations aftercoordination with the FAA. The appli-cant must notify the appropriate Re-gional Office of the FAA prior to sub-mission to the Commission of an appli-cation for a new station or for modi-fication of an existing station tochange frequency, power, location oremission. Each application must be ac-companied by a statement showing thename of the FAA Regional Office noti-fied and the date of notification.

(b) Frequencies available for radio-navigation land stations. (1) LORAN–C isa long range navigation system whichoperates in the 90–110 kHz band.

(2) Radiobeacon stations enable anaircraft station to determine bearingor direction in relation to the radio-beacon station. Radiobeacons operatein the bands 190–285 kHz; 325–435; and510–525 kHz.

(3) Aeronautical marker beacon sta-tions radiate a vertical distinctive pat-tern on 75 MHz which provides positioninformation to aircraft.

(4) The following table lists the spe-cific frequencies in the 108.100–111.950MHz band which are assignable to lo-calizer stations with simultaneous ra-diotelephone channels and their associ-ated glide path station frequency fromthe 328.600–335.400 MHz band.

Localizer (MHz) Glide path (MHz)

108.100 334.700108.150 334.550108.300 334.100108.350 333.950108.500 329.900108.550 329.750108.700 330.500108.750 330.350108.900 329.300108.950 329.150109.100 331.400109.150 331.250109.300 332.000109.350 331.850109.500 332.600

Localizer (MHz) Glide path (MHz)

109.550 332.450109.700 333.200109.750 333.050109.900 333.800109.950 333.650110.100 334.400110.150 334.250110.300 335.000110.350 334.850110.500 329.600110.550 329.450110.700 330.200110.750 330.050110.900 330.800110.950 330.650111.100 331.700111.150 331.550111.300 332.300111.350 332.150111.500 332.900111.550 332.750111.700 333.500111.750 333.350111.900 331.100111.950 330.950

(5) VHF omni-range (VOR) stationsare to be assigned frequencies in the112.050–117.950 MHz band (50 kHz chan-nel spacing) and the following fre-quencies in the 108–112 MHz band:

108.200108.250108.400108.450108.600108.650108.800108.850109.000109.050109.200109.250109.400109.450109.600109.650109.800109.850110.000

110.050110.200110.250110.400110.450110.600110.650110.800110.850111.000111.050111.200111.250111.400111.450111.600111.650111.800111.850112.000

(6) The band 960–1215 MHz is availablefor the use of land stations and associ-ated airborne electronic aids to airnavigation. When distance measuringequipment (DME) is intended to oper-ate with a single VHF navigation sta-tion in the 108–117.975 MHz band, theDME operating channel must be pairedwith the VHF channel as shown in thefollowing table:


234

47 CFR Ch. I (10–1–97 Edition)§ 87.475

DME CHANNELING AND PAIRING[MHz]

VHF channel Airborne interro-gating frequency

Ground reply fre-quency

108.000 1041.000 978.000108.050 1041.000 1104.000108.100 1042.000 979.000108.150 1042.000 1105.000108.200 1043.000 980.000108.250 1043.000 1106.000108.300 1044.000 981.000108.350 1044.000 1107.000108.400 1045.000 982.000108.450 1045.000 1108.000108.500 1046.000 983.000108.550 1046.000 1109.000108.600 1047.000 984.000108.650 1047.000 1110.000108.700 1048.000 985.000108.750 1048.000 1111.000108.800 1049.000 986.000108.850 1049.000 1112.000108.900 1050.000 987.000108.950 1050.000 1113.000109.000 1051.000 988.000109.050 1051.000 1114.000109.100 1052.000 989.000109.150 1052.000 1115.000109.200 1053.000 990.000109.250 1053.000 1116.000109.300 1054.000 991.000109.350 1054.000 1117.000109.400 1055.000 992.000109.450 1055.000 1118.000109.500 1056.000 993.000109.550 1056.000 1119.000109.600 1057.000 994.000109.650 1057.000 1120.000109.700 1058.000 995.000109.750 1058.000 1121.000109.800 1059.000 996.000109.850 1059.000 1122.000109.900 1060.000 997.000109.950 1060.000 1123.000110.000 1061.000 998.000110.050 1061.000 1124.000110.100 1062.000 999.000110.150 1062.000 1125.000110.200 1063.000 1000.000110.250 1063.000 1126.000110.300 1064.000 1001.000110.350 1064.000 1127.000110.400 1065.000 1002.000110.450 1065.000 1128.000110.500 1066.000 1003.000110.550 1066.000 1129.000110.600 1067.000 1004.000110.650 1067.000 1130.000110.700 1068.000 1005.000110.750 1068.000 1131.000110.800 1069.000 1006.000110.850 1069.000 1132.000110.900 1070.000 1007.000110.950 1070.000 1133.000111.000 1071.000 1008.000111.050 1071.000 1134.000111.100 1072.000 1009.000111.150 1072.000 1135.000111.200 1073.000 1010.000111.250 1073.000 1136.000111.300 1074.000 1011.000111.350 1074.000 1137.000111.400 1075.000 1012.000111.450 1075.000 1138.000

DME CHANNELING AND PAIRING—Continued[MHz]



111.500 1076.000 1013.000111.550 1076.000 1139.000111.600 1077.000 1014.000111.650 1077.000 1140.000111.700 1078.000 1015.000111.750 1078.000 1141.000111.800 1079.000 1016.000111.850 1079.000 1142.000111.900 1080.000 1017.000111.950 1080.000 1143.000112.000 1081.000 1018.000112.050 1081.000 1144.000112.100 1082.000 1019.000112.150 1082.000 1145.000112.200 1083.000 1020.000112.250 1083.000 1146.000112.300 1094.000 1157.000112.350 1094.000 1031.000112.400 1095.000 1158.000112.450 1095.000 1032.000112.500 1096.000 1159.000112.550 1096.000 1033.000112.600 1097.000 1160.000112.650 1097.000 1034.000112.700 1098.000 1161.000112.750 1098.000 1035.000112.800 1099.000 1162.000112.850 1099.000 1036.000112.900 1100.000 1163.000112.950 1100.000 1037.000113.000 1101.000 1164.000113.050 1101.000 1038.000113.100 1102.000 1165.000113.150 1102.000 1039.000113.200 1103.000 1166.000113.250 1103.000 1040.000113.300 1104.000 1167.000113.350 1104.000 1041.000113.400 1105.000 1168.000113.450 1105.000 1042.000113.500 1106.000 1169.000113.550 1106.000 1043.000113.600 1107.000 1170.000113.650 1107.000 1044.000113.700 1108.000 1171.000113.750 1108.000 1045.000113.800 1109.000 1172.000113.850 1109.000 1046.000113.900 1110.000 1173.000113.950 1110.000 1047.000114.000 1111.000 1174.000114.050 1111.000 1048.000114.100 1112.000 1175.000114.150 1112.000 1049.000114.200 1113.000 1176.000114.250 1113.000 1050.000114.300 1114.000 1177.000114.350 1114.000 1051.000114.400 1115.000 1178.000114.450 1115.000 1052.000114.500 1116.000 1179.000114.550 1116.000 1053.000114.600 1117.000 1180.000114.650 1117.000 1054.000114.700 1118.000 1181.000114.750 1118.000 1055.000114.800 1119.000 1182.000114.850 1119.000 1056.000114.900 1120.000 1183.000114.950 1120.000 1057.000


235


DME CHANNELING AND PAIRING—Continued[MHz]



115.000 1121.000 1184.000115.050 1121.000 1058.000115.100 1122.000 1185.000115.150 1122.000 1059.000115.200 1123.000 1186.000115.250 1123.000 1060.000115.300 1124.000 1187.000115.350 1124.000 1061.000115.400 1125.000 1188.000115.450 1125.000 1062.000115.500 1126.000 1189.000115.550 1126.000 1063.000115.600 1127.000 1190.000115.650 1127.000 1064.000115.700 1128.000 1191.000115.750 1128.000 1065.000115.800 1129.000 1192.000115.850 1129.000 1066.000115.900 1130.000 1193.000115.950 1130.000 1067.000116.000 1131.000 1194.000116.050 1131.000 1068.000116.100 1132.000 1195.000116.150 1132.000 1069.000116.200 1133.000 1196.000116.250 1133.000 1070.000116.300 1134.000 1197.000116.350 1134.000 1071.000116.400 1135.000 1198.000116.450 1135.000 1072.000116.500 1136.000 1199.000116.550 1136.000 1073.000116.600 1137.000 1200.000116.650 1137.000 1074.000116.700 1138.000 1201.000116.750 1138.000 1075.000116.800 1139.000 1202.000116.850 1139.000 1076.000116.900 1140.000 1203.000116.950 1140.000 1077.000117.000 1141.000 1204.000117.050 1141.000 1078.000117.100 1142.000 1205.000117.150 1142.000 1079.000117.200 1143.000 1206.000117.250 1143.000 1080.000117.300 1144.000 1207.000117.350 1144.000 1081.000117.400 1145.000 1208.000117.450 1145.000 1082.000117.500 1146.000 1209.000117.550 1146.000 1083.000117.600 1147.000 1210.000117.650 1147.000 1084.000117.700 1148.000 1211.000117.750 1148.000 1085.000117.800 1149.000 1212.000117.850 1149.000 1086.000117.900 1150.000 1213.000117.950 1150.000 1087.000

(7) 1300–1350 MHz: The use of thisband is restricted to surveillance radarstations and associated airborne tran-sponders.

(8) 1559–1626.5 MHz: The use of thisband is limited to airborne electronic

aids to air navigation and any associ-ated land stations.

(c) Frequencies available for radio-navigation land test stations. (1) The fre-quencies set forth in § 87.187(c), (e)through (j), (r), and (t) and § 87.475(b) (6)through (10), and (12) may be assignedto radionavigation land test stationsfor the testing of aircraft transmittingequipment that normally operate onthese frequencies and for the testing ofland-based receiving equipment thatoperate with airborne radionavigationequipment.

(2) The frequencies available for as-signment to radionavigation land teststations for the testing of airborne re-ceiving equipment are 108.000 and108.050 MHz for VHF omni-range; 108.100and 108.150 MHz for localizer; 334.550and 334.700 MHz for glide slope; 978 and979 MHz (X channel)/1104 MHz (Y chan-nel) for DME; 1030 MHz for ATC radarbeacon transponders; and 5031.0 MHzfor microwave landing systems. Addi-tionally, the frequencies in paragraph(b) of this section may be assigned toradionavigation land test stations aftercoordination with the FAA. The follow-ing conditions apply:

(i) The maximum power authorizedon the frequencies 108.150 and 334.550MHz is 1 milliwatt. The maximumpower authorized on all other fre-quencies is one watt.

(ii) The pulse repetition rate (PRR)of the 1030 MHz ATC radar beacon testset will be 235 pulses per second (pps)±5pps.

(iii) The assignment of 108.000 MHz issubject to the condition that no inter-ference will be caused to the receptionof FM broadcasting stations and sta-tions using the frequency are not pro-tected against interference from FMbroadcasting stations.

(d) Frequencies available for ELT teststations. The frequencies available forassignment to ELT test stations are121.600, 121.650, 121.700, 121.750, 121.800,121.850, and 121.900 MHz. Licenseesmust:

(1) Not cause harmful interference tovoice communications on these fre-quencies or any harmonically relatedfrequency.

(2) Coordinate with the appropriateFAA Regional Spectrum Management


236

47 CFR Ch. I (10–1–97 Edition)§ 87.477

Office prior to each activation of thetransmitter.


§ 87.477 Condition of grant for radio-navigation land stations.

Radionavigation land stations maybe designated by the FAA as part ofthe National Airspace System. Sta-tions so designated will be required toserve the public under IFT conditions.This condition of grant is applicable toall radionavigation land stations.

§ 87.479 Harmful interference to radio-navigation land stations.

(a) Military or other Governmentstations have been authorized to estab-lish wide-band systems using fre-quency-hopping spread spectrum tech-niques in the 960–1215 MHz band. Au-thorization for a Joint Tactical Infor-mation Distribution Systems (JTIDS)has been permitted on the basis of non-interference to the established aero-nautical radionavigation service inthis band. In order to accommodate therequirements for the system within theband, restrictions are imposed. Trans-missions will be automatically pre-vented if:

(1) The frequency-hopping mode failsto distribute the JTIDS spectrum uni-formly across the band;

(2) The radiated pulse varies from thespecified width of 6.4 microseconds±5%;

(3) The energy radiated within ±7MHz of 1030 and 1090 MHz exceeds alevel of 60 dB below the peak of theJTIDS spectrum as measured in a 300kHz bandwidth. The JTIDS will be pro-hibited from transmitting if the timeslot duty factor exceeds a 20 percentduty factor for any single user and a 40percent composite duty factor for allJTIDS emitters in a geographic area.

(b) If radionavigation systems oper-ating in the 960–1215 MHz band experi-ence interference or unexplained loss ofequipment performance, the situationmust be reported immediately to thenearest office of the FAA, the NationalTelecommunications and InformationAdministration, Washington, DC 20504,or the nearest Federal Communica-tions Commission field office. The fol-

lowing information must be providedto the extent available:

(1) Name, call sign and category ofstation experiencing the interference;

(2) Date and time of occurrence;(3) Geographical location at time of

occurrence;(4) Frequency interfered with;(5) Nature of interference; and(6) Other particulars.

§ 87.481 Unattended operation of do-mestic radiobeacon stations.

(a) Radiobeacons may be licensed forunattended operation. An applicant forunattended operations must provide in-formation about the following:

(1) The transmitter is crystal con-trolled and specifically designed forradiobeacon service and capable oftransmitting by self-actuating means;

(2) The emissions of the transmittermust be continuously monitored by alicensed operator, or by a direct posi-tive automatic monitor, supplementedby aural monitoring at suitable inter-vals;

(3) If as a result of aural monitoringit is determined that a deviation fromthe terms of the station license has oc-curred, the transmitters must be dis-abled immediately by a properly au-thorized person. If automatic monitor-ing is used, the monitor must insurethat the operation of the transmittermeets the license terms or is disabled;

(4) The time, including travel time,required for a properly authorized per-son to disable the transmitter;

(5) The equipment must be inspectedat least every 180 days. Results of in-spections must be kept in the stationmaintenance records;

(6) The transmitter is not operable byor accessible to, other than authorizedpersons;

(7) The transmitter is in a remote lo-cation.

(b) Authority for unattended oper-ation must be expressly stated in thestation license.

Subpart R—Civil Air Patrol Stations

§ 87.501 Scope of service.Civil Air Patrol land and mobile sta-

tions must be used only for training,operational and emergency activitiesof the Civil Air Patrol.


237

Federal Communications Commission Pt. 90

(a) Civil Air Patrol land and mobilestations may communicate with otherland and, mobile stations of the CivilAir Patrol. A Civil Air Patrol land sta-tion may be moved from its authorizedlocation for temporary operation in thesame general area for short periods oftime not to exceed 72 hours.

(b) When engaged in training or onactual missions in support of the U.S.Air Force, Civil Air Patrol stationsmay communicate with U.S. Air Forcestations on the frequencies specified insubpart E.

§ 87.503 Supplemental eligibility.Licenses for Civil Air Patrol land and

mobile stations will be issued only toWings or the Headquarters of the CivilAir Patrol. All applications must besubmitted to the Commission via CivilAir Patrol Headquarters, Maxwell AirForce Base, AL 36112. A single fleet li-cense will be issued to Civil Air PatrolHeadquarters and to each Civil Air Pa-trol Wing to authorize all Civil Air Pa-trol Station transmitters operated bythe Wing or Headquarters.

[54 FR 11721, Mar. 22, 1989]

§ 87.505 Frequencies.The assigned frequencies available

for assignment to Civil Air Patrol landand mobile stations are contained inthe frequency table in subpart E. Thefrequency, emission, and maximumpower will be determined by Head-quarters Civil Air Patrol in accordancewith the Civil Air Patrol Communica-tions Plan.

Subpart S—Automatic WeatherObservation Stations

§ 87.525 Scope of service.Automatic weather observation sta-

tions must provide up-to-date weatherinformation including the time of thelatest weather sequence, altimeter set-ting, wind speed and direction, dew-point, temperature, visibility and otherpertinent data needed at airports hav-ing neither a full-time control towernor a full-time FAA Flight ServiceStation. When a licensee has enteredinto an agreement with the FAA, anautomatic weather observation stationmay also operate as an automatic ter-

minal information station during thecontrol tower’s operating hours.

§ 87.527 Supplemental eligibility.(a) Licenses will be granted only

upon FAA approval.(b) Eligibility for an automatic

weather observation station or anautomatic terminal information sta-tion is limited to the owner or operatorof an airport or to a person who has en-tered into a written agreement withthe owner or operator for exclusiverights to operate and maintain the sta-tion. Where applicable a copy of theagreement between the applicant andowner or operator of the airport mustbe submitted with an application.

(c) Only one automatic weather ob-servation station or an automatic ter-minal information station will be li-censed at an airport.

§ 87.529 Frequencies.Prior to submitting an application,

each applicant must notify the nearestappropriate FAA Regional SpectrumManagement Office. Each applicationmust be accompanied by a statementshowing the name of the FAA RegionalOffice and date notified. The Commis-sion will assign the frequency. Nor-mally frequencies available for air traf-fic control operations set forth in sub-part E will be assigned to automaticweather observation stations and toautomatic terminal information sta-tions. When a licensee has entered intoan agreement with the FAA to operatethe same station as both an automaticweather observation station and as anautomatic terminal information sta-tion, the same frequency will be usedin both modes of operation.

PART 90—PRIVATE LAND MOBILERADIO SERVICES

Subpart A—General Information

Sec.90.1 Basis and purpose.90.5 Other applicable rule parts.90.7 Definitions.

Subpart B—Public Safety Radio Pool

90.15 Scope.90.16 Public Safety National Plan.90.20 Public Safety Pool.90.22 Paging operations.


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