INTRODUCTION

A presentataion on outdoor installationGOLAM SAHID AZAM1INTRODUCTIONIn a telecom cell site lots of equipments and other hardwares are used.

This presentation will focus on the materials used at cell site & their descriptions.

It will also show us the proper guidelines to install the telecom materials along with dos & dont.

Some of the quality issues which has to kept in mind are illustrated.22INDEXMATERIAL & EQUIPMENTS DESCRIPTION

INSTALLATION PROCEDURE

QUALITY CHECK POINTS

3 ANTENNAAntenna is basically a transducer. It converts electrical energy into electromagnetic energy & vise versa .It is a Passive Device.

Specification of GSM Panel Antenna.The ports size is 7/8 inch Female Co-axial.It has 50 impedence.

4Antenna classificationSingle Port Antenna

Dual Port Antenna

Quad Port Antenna

Hex Port Antenna

5CLASSIFICATION OF ANTENNA Single polarized antenna

Dual polarized antenna

3.Cross polarized antenna

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6CLASSIFICATION OF ANTENNNAMost commonly used beam width is 65 & 360.360 beam width Antenna is used in IBS Site & underground Metro station.

7E. ACCORDING TO DIRECTION OF RADIATIONOmni-directional Antenna mostly used in IBS Site & underground Metro station.360 radiation pattern.

82.Bi-directional AntennaUsed for highway coverage

highwayBi-directional antenna9Uni-directional AntennaIt radiates in single direction only.Most commonly used.65 beam width used.

10GSM ANTENNA MANUFACTURERSKATHREIN world leader in panel antennas.Germany based company.

ANDREW2nd largest manufacturer after Kathrein.USA based company.

KAVVERI TELECOMLess used because of its high cost.USA operator AT&T is its Client.Indian based company, HQ at Madurai, T.N

11Feeder cable or RF cable.It consists of 4 layers.

Size= 7/8 inch or 5/4 inch.

Impedence = 50

Inner coreSoft insulationOuter coreOuter insulation12Why inner core of Rf cable is hollow? to save cost as Cu is very costly.

Conductivity increases.

It makes the wire flexible to bend.

13Aluminium RF CableThe outer core is made up of Al with silver foil.It comes only in 7/8 inch size.Impedence = 50

14Manufacturer of RF Cable.Andrew(largest manufacturer)Nokia HelixAmphenolTelegartnerSurbhi( Indian manufacturer)

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Jumper cable diameter size.50 Impedence.More flexible than RF cable.

16Connectors RF connectorJumper connector.

Type of jumper connectors:

7/8 F 7/8 M7/8 M 7/8 M7/8 F 7/8 F7/8 M 7/8 L.M

17EARTHING KIT

Used to protect against lightening. Cupper or Aluminium Strip.Length approx 0.5 m

18LUGSIt is of 3 types.1. I type - It is used to connect 2 cables.2. Pin type It is used to connect cable to MCB.3. Ring type It is used to connect cable to Bus Bar.

19Surge arrestorIt protects BTS from getting damaged against strong lightening.

20Roxtec It guides the RF cables into the shelter.ROXTEC is also called WFT or Entry plate.It contains rubber boots.It can be of 4 way or 6 way.

6 way ROXTEC WITH (7/8 BOOTS )7/8 BOOT21RF clampsIt is used to hold the RF cable in the cable tray.It contains one C- clamp.It can be of 1 way, 2 way, 3 way, or 6 way.

6 WAY ,7/8 FEEDER CLAMPWITH FULL THREADED ROD & NUTS-BOLTS.

3 WAY ,7/8 FEEDER CLAMPWITH FULL THREADED ROD & NUTS-BOLTS.

22WEATHER PROOFING KITIt contains 3 tapes1. pvc tape2. Rubber tape.3. Butyl tape.

It is tied by the cable ties.

FEEDERS WEATHER PROOFING KIT (BUTYL TAPE,3/4 PVC TAPE & ,2 PVC TAPES )

Cable ties23INSTALLATION PROCEDURE24RF PLAN PARTICULARS1S2S31. Azimuth351802702. Height25M27M29M3.Mechanical Tilt0004. Electrical Tilt3115. Type of AntennaKT54541KT54542KT54543SITE NAME: TECHNOPOLIS BUILDINGSITE ID: KOL94348ADDRESS: SECTOR V, SALT LAKE CITY, KOLKATA-6425MATERIAL LIST FOR ANTENNA & ANTENNA LINES SL. NOPARTICULARSSPECIFICATIONSQUANTITYREMARK1antenna 1800 band, cross polarized, 65 beam width32jumper1/2" dia, M to F connector, 5m length63jumper1/2" dia, M to F connector, 2m length64RF cable7/8" Cu 186m5RF connector7/8" M126earthing kitCu Strip127grounding cable10sq mm, black colour6m8lugs10sq mm, Cu, ring type149surge arrestorM to F pin610grounding cable16 sq mm, green colour9m11grounding cable35 sq mm, yellow green colour3m12Rf clamp 6 way3213Roxtec4 way114weather proofing kitpvc, butyl, rubber615labels10016cable ties10026ANTENNA INSTALLATIONBefore mounting the antenna, tilt is given in the ground and mounted on the pole mount with rope & pulley.

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ANTENNA IS TAKEN UP ON TOWER WITH THE HELP OF PULLEY AND ROPE.ANTENNA INSTALLATION2. TO AVOID DAMAGE TO ANTENNA FROM TOWER LEGS, WE PULL THE ROPE AWAY FROM THE TOWER.28RF CLAMP INSTALLATIONBefore laying the cable, RF clamps are fixed on the cable tray.

29RF cable InstallationRF cable is laid on the cable tray & fixed by RF clamps.

EARTHING KITRF CABLERF CLAMPCABLE TRAY30BENDING RADIUS OF RF CABLESWhile laying the RF Cable, we should be careful about the bends.

FOR 7/8 FEEDER CABLE.Minimum single bending radius is 300mm.

Bending radius31

ANDREW 7/8 FEEDERGROUNDING KIT ,(IT INLUDES GROUNDING STRIP,CABLE,WEATHER-PROOFING KIT). EARTHING STRIP

EARTHING KIT INSTALLATIONAfter laying the RF cable on the VCT, we can put the earthing kit on the cables.Earthing kit is generally installed 1 - 1.5m below RF connector on the RF cable.

32ROUTING OF RF CABLE INTO THE SHELTER THROUGH THE ROXTECBefore connectorization, RF cables are guided into the shelter through roxtec for internal marking on the cable.BTSROXTEC3333CONNECTORIZATIONRF Connectors are connected at the both ends of RF cables.

34Connection with the surge arrestorAfter connectorization, Rf cables are inserted into the shelter & connected with the surge arrestors.The Surge arrestors are then grounded to IGB.

35FLEXI BTSSURGE ARRESTORSSURGE ARRESTORS GROUNDING BUS BAREGBIGBConnection of jumper to BTSFinally the jumper cables are connected to the BTS ports.jumper36WEATHER PROOFING & LABELLINGAfter making all the connections, outdoor connections are weather proofed properly.Then labels are provided on the required positions.

FEEDERS WEATHERPROOFING KIT (BUTYL TAPE,3/4 PVC TAPE & 2 PVC TAPES ), THESE ARE SET OF ONE KITCABLE TIESWEATHER PROOFEDLABEL37QUALITY CHECK ISSUES38OK ANTENNA JUMPER LOOPS39

INDOOR JUMPER CABLES LOOP40EGB ROXTECS- BENDS- BEND IN RF CABLEThere should be S-bend in the RF cable before entering the Roxtec.41WEATHER PROOFINGAll ourdoor antenna line connections, grounding kits and wall entries have to be weather proofed.Connections where weather proofing is needed:Feeder to jumper at antenna end.Feeder to antenna Feeder to EMP (if located outdoor)Grounding kits have to be sealed according to manufacturer instructions.

WEATHER PROOFING NEEDED

42 1.CONNECTION TO BE TAPED USING APPROVED TYPE OF INSULATION TAPE. 2.CONNECTION TO BE TAPED USING APPROVED TYPE OF SELF AMALGAMATING TAPE. 3. CONNECTION TO BE TAPED USING APPROVED TYPE OF INSULATION TAPE.2. TWO STRETCH WRAPPED WRAPS OF SELF AMALGAMATING TAPE (STRETCH 30%, OVERLAPPING 50%)205050203. THREE WRAPS OF INSULATION TAPE (OVERLAPPING 50%)1. ONE WRAP OF INSULATION TAPE (OVERLAPPING 50%)TAPING OF CONNECTION BETWEEN RF FEEDERS AND JUMPER43PROPER TAPING OF JUMERApply two rounds of self amalgamating tape, taping will end to top

Start insulation round from down and apply three round of tape, so taping will end to the top.Tape on feeder 50mm44PROPER TAPING AFTER WATER PROOFINGFinally secure tape ending with cable tie to prevent tape loosening and applying better waterproofing to jumper connector and antenna connection point

45BENDING OF CABLEDecreasing of bending radius of cable will cause:a) holes to cable jacket/sheathb) damages to braidc) damages to center conductor Do not decrease bending radius of cable under manufacturers specification.

NOT OK46ROUTING OF GROUNDING CABLES

Always try to treat the lightning path as a drain.NOT OKOK 47SAFETY MEASURESALWAYS wear helmet.

Always use Belts to prevent from falling down.

DO NOT store inflammable liquids.

DO NOT use candles or other naked flames for lighting purposes, especially during a power failure.

5. DO NOT smoke inside the shelter.

48THANK YOU.49