contents · contents echo and its effects on the telephone user, g. m. phillips semiconductors:...

CONTENTS

The L3 Coaxial Carrier SYstem, R. H. Rlie 1

Inventing and Patenting at Bell Laboratories, Ralph Bown 5

The Englewood Story, E. L. Getz II

.

Color Timing System for Fiher Center, L. E. Van Damme 17

"Nerve~Type" Transmission Line,R. L. Taylor and H. M. Straube 21

Testing Telep~one Usefulness 25

Continuously Recorded Relay Measurements, E. G. 1Palsh 27

F. J. Singer, Chairman

A. C. Dickieson

F. A. Korl1

S. MillmanR. J.. Nossaman

W. E. Rieehle

EDITORIAL STAFF

EDITORIAL BOARD

The BELL LABORATORIES RECORD is published monthly by Bell Tclepbo,.e

Laboratorte~. lne0J:1l0rated, 463 West StrMt. New York 14, N. Y., M. J. KELLY,

PJoesident; M. B. LONG, Secretary and Treasurer. Subscription.. ' $2.00 pcr------'-------------------------

,.....r' For..tgn. $!!..60 per ,..ear. Cheeks shQuld be made payable to Bell Labora.

torles Record and addressed to th,e Clrenlation Manager. Printed in U. S. A.

THE COVER - Hearl of the new coaxial cable s)'stemIL H. Klie and O. L. Williams measure the gain of an L3 Hne

amplifier. The first of a series of articles describing this system

appears 011 the opposite page.

Julian D. Tebo, Editor

WilHam D. Bulloch, Asqock!tc Editor

George E. Schindler, Jr., Assistant Ed-lto.r, Murray Ria

Robert C. Sanford, Assistant Edito',

R. Linsley Shepherd, Production Editor

Theodore N. Pope, Circul.mion .a;ranager

Courtesy www.historyofphonephreaking.org

CONTENTS

Solderless Wrapped Connections~ J. J. Kuhn, Sr.

Making Tubes jor Research, J. R. Pierce

Automatic Alternate Routing of Telephone Traffil'.~ C. Clos

Dr. Kelly Discusses "Tkc Contributions of 'ndustrial Research

to National Security"

Bell and Lights for Civil Defense,' R. D. Williams

A New Single-Freqlu.ncy Signaling System, A. Weaver

Governors for Dials, W. Pferd

NilM Added to Nation's Defense Arsenal

THE COVER - Nike launching section with missiles raised to firing posi

tion. U. S. Army Ordnance technicians are performing a last minute

electrical ChMkout on the missile in the foreground.

The BELL LABORATORIES RECORD is published ntonthty hy Bell Telephone

Laboratories, Incorporated, 463 West Street, New York 14, N. Y., M. J. J{~LLY,

President; M. B. LONG, Seeretar}· and Treasurer. Subscriptions: $2.00 p"'r

year; Foreign, $2.60 per year. Checks should be made payable to Bell Lahora_

tories Record and addressed to the Circulation Mana"er. Printed in U. S. A.

41

46

51

58

59

62

69

74

EOl'l'ORIAL BOARO

F. J. Singer, Chalrman

A. C. Diekieson

F. A.KomS. Milhnan

R. J. Nossatnan

W. E. Reichle -EOI'l'ORIAL S'l'AFF

Julian D. Tebo, Editor

William D. Bulloch, As80ciate Editor

George E. Schindler, Jr., Assistant EditDr. Mun-all eill

Robert C. Sanford, Assistant Editor

R. Linsley Shepherd~Productwn Editor

Theodore N. Pope, Circulation MafUJge1'


CONTENTS

Televi.,·ioll and the Bell System~ J. M. Barstow

Spectrophotometric Analysis. C. L. Luke

Emergency Transfer for Essenfial Ser11ices• .I. H. Craig

TelephQne SCi for Hazardous Areas

A Shock Tester lor Small Apparatus, F. W. Stubner

Locating Conductor Faults with Sound Whistler~ A. Majlinger

Wire Line Entrance Links for TD-2, J. W. Beyer

Wire Abrasion Tester

Highlights front the A T & T Annual Report

Western Electric Has Record Year

THE COVER- At Bell Telephone Laboratories, H. P. Kelly

fileasures the performance characteristics of amplifiers used in

transmitting standard and colo.. television signal.

The BELL LABORATORIES RECORD is published monthly by Bell TelcphOliC

Laboratories, Incorpor:oted, 463 West Street, New York 14, N. Y., M. J. KELLY.

______ Prcsident; n. M. LONG, Seeretary and Te::osurer. Sul"'er;pdon, $2.00 per

year; Foreign, $2.60 per year. Cheeks should be Jnade payable to Be11 Lnhora.

torles Reeord and addressed to the Clreul:otlon Mana~er. Printed In U. S. A.

81

88

92

96

98

102

108

111

114

116

EDITORIAL BOARD


A. C. Dickieson

F. A. KornS. Millman

R. J. Nossaman

W. E. Reichle

EDITORIAL STAFF

J. D. Tebo, Editor

W. D. Bulloch, Associate Editor'

G., E. Schindler, Jr., Assistant Editor. Murray Hill

R. C. Sanford, Assistant Editor

R. L. Shepherd, Production Editor

T. N. Pope, Circulation Manager


CONTENTS

A New Type Open-Wire Line for Rural Areas, N. C. Watling

A Digital Code Wheel, J. J. J. Kernahan

New Gas Flow Indicator

A Mechanical Traveling-Wnve Oscillator, C. C. Culler

Amplifiers for ,he L3 Coaxinl System, O. L. Williams

Aluminum Die-Castings Jor N1 Carrier, L. Pedersen

Electronic Test Set Jor Signaling Systems, W. W. Fritschi

No. 5 Crossbar Opens the Door toNationwide Customer Dialing, R. E. Hersey

New 12.Channel Bank for Broadband Carrier

Transistorized Rural Carrier Trial Starts

THE COVER - Many developments, such as the new typeopen-wire line (opposite page), de!!ligned for rural telephoneservice, are tested at the Chester Field station. Here, for example, D. M. Mitchel and J. D. Apgar (on pole) measurewh'e sag.

The HELL LABORATORIES RECORD is published monthly by Ben Telephone

Laboratol"ies, Incorporated, 46.'1. West Street, New York 14, N. Yo, M. J. KELLY,

Pl"esident; M. B. LONG, SeCl"ctary and Treasnrer. SUbscription: $2.00 per

year; Foreign, $2.60 pe.. yea... Cheeu should be made payable to Ben Labora.

tories Record and add..essed to the Circulation Manager. Printed in U. S. A.

121

126

132

134 i

139 II'r144 "

I

148

153

157

158

EDITORIAL BOARD

F. J. Singer, Cha'lrman

A. C. Dickieson

F. A. KornS. Mill.man

R. J. Nossaman

W. E. Reichle

EDITORIAL STAFF

J. D. Tebo, Editor

W. D. Bulloch, Asrociaie Editor

G. E. Schindler, Jr., A,reWtUf'lt Edlt()r, MuN'uy Hill

R. C. Sanford, As.tistant Editor




CONTENTS

Prejerence Research, J. E. Karlin and R. K. Potter 161

----------~---------------~--I---

Rural Distribution Wire, C. C. Lawson

Precision Potentiometers Jor Analog Computers, D. G. Blattner

Dr. Kelly Surveys Military and Civilian Uses ofAtomic Power at Centennial Science Forum

Cast Resin Terminal Strips, R. Morse

Mechanical Problems of Electron Tubes for L3 Carrier, E. J. Walsh

Ladders and Fungi

No.5 Cro$$bar - Marker and Trans1Jerter Testing, C. W. Haas

THE COVER - A simulated radio relay system in the micro·

wave systems laboratory is used by nell Telephone Labora·

tories engineers to study TD-2 operation. Here W. C. Anderson

(shown at the left) ;:lnd B. L Reynolds test one of the repeaters.

The BELL LABORATORIES RECORD is published monthly by Bell Telephone

Laboratoriel:J, ]pcorporllted, 463 Wellt Street, New York 14, N. Y., M. J. KELLY,

President; M. B. LONG, Secretary and Treasurer. Subscription: $2.00 per

year; Foreign, $2.60 per year. Cheeks should be made payable to Bell Labora·

tories Record and addressed to thtl CiromlaUon Manager. Printed in U. S. A.

167

171

178

179

183

188

190

EDITORIAL BOARD


A. C. Dickieson

F. A. Korn

S. Millman

R. J. Nossaman

W. E. Reichle ,

.~

:,';

EDITORIAL STAFF

J. D. Tebo, Editor

W. D. Bulloch, Associate Editor

G. E. Schindler, Jr., Assistant Editor, MUN'IJY 8tU

R. C. Sanlord, AssLnant Editor --:~'+


T. N. Pope, Circulat~onManager


CONTENTS

A Foreword on Transistors, J. B. Fisk 201

P-N Junctions and the Junction Transistor, M. Sparks 203

-- ..

Dr. Kelly Receives Industrial Research Medal 101' 19.~4 208

Type - 0 Carrier

System Objectives, B. C. Gn:ffith and H. Kahl 209

System Description, R. D. Fracassi 215

A New Multifrequency Receiver, B. J. Yokelson 221

Contact Phenomena in Scaled Container..;;, R. H. Gumley 226

Measuring Overhead Wire Clearances 231

The Bell Solar Battery 232

The 1954 Share Owners' Meeting 236

THE COVER - Inventors of the Bell Solar Battery, left toright. G. L. Pearson, D. M. Chapin and C. S. Fuller.

The BELL LABORATORIES RECOJID is published Dmnth],. by Bell Telephone

L"bo)l'lltnries. Incorporated, 46.'1 West Street, New York 14, N. Y., M. J. KELLY,

------- President; M. B. LONG, Secretary and Treasurer. Subscription: $2.00 per

year; Foreign. $2.60 per year. Checks should he made payable to Hell Labora

tories Reeo..d and ..dd....s""d to d,e f:ireulati('>n Manager. Printed in U. S. A.

EDITORIAL BOARD


A. C. Dickieson

F. A. Korn

S. Millman

R. J. Nossaman

W. E. Reichle

,ED ITORIAL STAFF

J. D. Tebo, EditQr

W. D. Bulloch,A$$()ciate Editnr

G. E. Schindler, Jr., Assistant Editor, Murray Rin

R. C. Sanford,. Mllistant Editor


T. N. Pope. Circulation Manager


CONTENTS

Centrali;;ed Autom.atic Message Accounting, M. E. Maloney 241

Dr. Kelly Gives· Schwab Lecture Before American Iron and Steel Institute 244

Quality Control and tlte L3 System., B. J. Kinsburg 245

Continuous Scanner for Televising Film, R. E. Graham 250

Cold-Resrn Gas Dams lor Telephone Cablcs, J. A. Ratta 257

Detached Contact Schematics, J. W. Gorgas 261

No.5 Crossbar Tandem Revertive - Pulse Incoming Register, J. W. Brubaker 268

Order Wire and Alarm Facilities for Type - N CaTTier, R. L. Case 272

.

Panel SY-litem Maintenance, J. H. Sailliurd 277

THE COVER-At the Vesey tandem office in New York City,

a switchboard currently being installed as part of Centralized

Automatic Message Accounting equipm.ent (opposite page) is

here being inspected by W. A. Turezyn, New York Teleph.one

Company (left), and C. Clos, Bell Telephone Laboratories.

The BELL LABORATORIES RECORD is published monthly by Ben Telephone

Laboratories, Incorl.orated, 463 West Street, New York 14, N. Y., M. J. KELLY,

------- l"rel>ident; M. B. LONG, secreta..y and T ..cnsU1"e1". Snh..eription: $2.00 per

year; Foreign, $2.60 pel;' year. Checks should be made payable to Ben Labora

torie!! Record and addressed to the Circulation Manager. Printed in U. S. A.

EDITORIAL BOARD

.F. J. Singer, Chairman

A. C. Dickieson

F. A. Korn

S. Millman

R. J. Nossaman

W. E. Reichle

EDITORIAL STAFF

J. D. Teho, Editor

C. B. MacKenzie, AssiStant Editor

G. E., Schindler, Jr., As.ti.ytant Editor. Murray Hili

R. C. Sanford, .Assistant Editor

R. L~ Shepherd, Production Editor

T. N.Pope, Circulation MaMger


CONTENTS

Echo and its Effects on the Telephone User, G. M. Phillips

Semiconductors: Characteristic8 and Devices, G. L. Pearson

Telephone Poles End 25~Year Test in Colorado

Precision Transformers for the L3 Systfm'l, C. W. Thulin

Senders for the 4A Toll System, M. E. Esternaux

Varistor Measuring Tech,tiques, R. R. Blair

Regulatl!.d~Frequency Power Supply for Time-of~DarMachine,H. M. OwendolJ

Automatic Progression Trunk-Test Circuit, Ii. D. Cahill

THE COVER - Echo suppressor equipment (opposite page)

developed at Bell TelcpholtC Laboratories and shown installed

in the Long Lines No. I office in New York. A. F. Richardson,

Long Lines Engineer (left), and G. M. Phillips, Bell Labora

tories, observe relay operation.

The BELL LABORATORIES RECORD is published monthly by Bell Telephone

LabOl'atori!!!, .Incorporated, 463 West Street, New York 14, N. 1"., M. J. KELLY,

President; M. B. LONG, Secretary and Treasnl'er. Subscription: $2.00 per

year; Fo...,;gn, $2.60 per year. CL.eek.. should be mftde Jlllyable to Belt Labora.

tories Record :lnd addressed to the Circulation Manager. Printed in U. S. A.

281

285

290

292

295

301

308

313

EDITORIAL BOARD

F. J. Sin,ger. Chairman

A. C. DickiesonF. A. KornS. MillmanR~ J. Nossaman

W. E. Reichle

EDITORIAL STAFF

J. D. Tebo, Editor

C•. B. MacKenzie, A8,~irlaitt Editor

G. E. Schindler, Jr.'-Asmtant Editor, Murray Ht'll


R. L. Shepherd, Produotion Editor

T. N. Pape, Circulation Manager


CONTENTS

Electronic Computers an.d Telephone Switching, W. D. Lew':s 321

------- ----------- ---------------1---

Measuring Telephone Traffic, D. H. Barnes 326

- ..---- ---------- --------------------1----

A New Sound Integrator, R. 1'. Jenkins 331

Improved Silicon Carbide Varistors, C. J. Frosch 336

Type-O Channel Ci,·cuit.~, O. R. Garfield 341

A Noise-Figure Test Set for the TD-2 Radio System, D. H. llcsselgrave 346

-------------------------I-~

Sloln Release Wire-Spring Relay, O. C. Worley 351

An Irn.pr01Jed Splicer's Test Point

----------------1---

356

THE COVER - A new :sound integrator (page 331) rotates

around a 500-1ype telephOlie set in an acoustic room at Murray

Hill to measure sound power and quality of the telephone's

ring. J. D. Hubbell monitors sound QUlllut.

The BELL LABORATORII!:S RECORD is published monthly by Bell Telephone

Laborator;'..~, Incorporated, 463 West Street, New Y.;ok 14, N. Y•• M. J. KELI.Y,

------ Fresident; M. B. LONG, Seereta..y and T ....asu .....r. Suhser;l.fion, $2.00 per

year; 'foreign, $2.60 per rear. Checks should be ll1ade payable to Bell Labora_

tories Record and addressed to the Circulailon Mllnager. Printed in U. S. A.

EDITORIAL BOARD


A. C. DiekiesonF. A. Koru

S. Millman

R. J. NossamanW. E. Reichle

EDITORIAL STAFF

J. D. Tebo; Editor

C. B. MacKenzie, As~L<d.ant Editor

G. E. Schindler, Jr., Assistant Editor, Murray Hal


R. L.' Shepherd., Production Editor

T. N. Pope" CtrculatiOti Manager


DIAD - An Exp.erimental Telephone Office,W. A. Malthaner and H. E. Vaughan

A Universal Telephone Ringer, W. Kalin

Centrali:;ed AMA SlVitchboard~F. H. Martin

New Techniques for Measuring Forces and Wear, W. P. Mason

Dr. Kelly Warns of Urgent Need for Comp,leteContinent(ll Air Defense System

70 ~ Megacycle IF Pads, A. S. May

Open - Wire Swing Test

Nel(l DUro-High Frequency TransistorDeveloped at the Laboratories

Regulation QI the L3 Coaxial System, F. J. Braga and C. J. Custer

The lOO-Pen Recorder, C. H. Erving, Jr.

Line Insulation Test Circuit, F. E. Blount

THE COVER - Engineers of the Bell Telephone Laboratories

Transmission Systems Development Department observing

performance of regulating networks for the L3 carrier system

(see page 381). Left to right, J. H. Jamison, O. L. Williams,and J. L. Sullivan check resistance values of thermistors

mounted on breadboard models in baekground.

The BELL LABORATORIES RECORD Is pabliJIhed monthly by Bell Telephone

Laboratories, Ineorpm:atl!od, 469 West Street, New YOl'k 14, N. Y., M. J. KELLY,

Pl"eddent; M. B. LONG, Seeretal"Y Aod Treunrer. Subscription: $Z.OO per

yeal"; Foreign, $2.60 per year. Checks should he made payable to Bell Labora.

tOl"ies Reeol"d and addre.sed to the Circutadon Mllna,,;er. Pr;nted in U. S. A.

CONTENTS

361

.%6

311

375

379

380

383

384

385

389

393

EDITORIAL BOARD


A. C. Dickieson

F. A. Korn

S. Millman

R. J. Nossaman

W.. E. Reichle

EDITORIAL STAFF

J. D. Tebo, Editor

C. B. MaeKenzie" Assistant Editor

G. E. Schindler, Jr., Assistant Editor,

R. C. Sanford, Assutant Editor

R. L. Shep~e~d, Production Editor

T. N. Pope, CiToulation Manager


CONTENTS

Redundancr in Television, E. R. Kretzmer

A New Cable Splice Closure, W. C. Kleinfelder

Radio Programs on Nl Carr'ier, A. V. Wurmser

First Transatlantic. Telephone Cable Scheduled for 1956

Metals with Whiskers, S. M. Arnold

1m-proved Design of B-Type Relay, F. A. Zupa

Growth of TD-2 Radio Relay

A Comparator for Precise Transfer ConductanceMeasurements, C. N. Young

Decoders and Markers in 4A Toll Crossbar, C. G. Morrison

THE COVER - Memhers of the Television Research Depart

ment study redundancy (see page 401) in an effort to find

better methods of transmitting TV information. W. A.

,Anderson (right) adjusts brightness on TV monitor while

A. M. Darbie prepares to select a scanning line from picture

for detailed presentation on oscilloscope.

T~ BELL LABORATORIES RECORD is pubUIilb.ed monthly by Bell Telephone

LaLoratodet, Inc4rporau,d, 4-63 Weal Street, New York 14, N. Y .. 1\1. J. KELLY,

_______ Pre..Menl:; M. B. LONG, Secretary and Treasurer. Subscription: $2.00 per

year; Foreign, $2.60 per year. CLecks should be made paYable to Bell Labora

torie.. Record a.nd addrell..ed t4 tLe ClrcuJation MAnager. Printed in U. S. A.

401

405

410

415

417

421

424

427

431

EDITORIAL BOARD


A. C. Dickieson

F. A. Korll

S. Millman

R. J. Nossaman

W. E. Reichle

EDITORIAL STAFF

J. D. Tebo. Editor

C. B. MacKenzie, A"istantEditor

G. E. Schindler, Jr., AMistant Editor, Murray Hill.



T. N. Pope. Circulation Manager


.-

1

CONTENTS

441

447

452

457

462

4,67

471

475

EDITORIAL BOARD


A. C. Dickieson

F. A. Kom$ S. Millman

R. J. N08samanW. E. Reichle

A Lon,g.Lived Packaged Amplifier for Aircraft, J. G. Matthews

Polyethylene Cable Guard

Microwave Testing with Millimicrosecond Pulses, A. C. Beck

--- ----------

RECORD

A New Intertoll Trunk-Testing Circuit~ R. C. Nance

MiniatfLrbed Transmission Transformers, A. C. Ekvall

Switching at Its Boldest, J. Meszar

Code Translation iuNo. 5 Crossbar, J. A. Ceonzo

Casting and .Potting Resins, W. J. Clarke

The BELL LABORATORIES RECORD is published mcmJhly by neu 'J'<,lcphone

Labor"tories. Incorporated. 468 West Street. New York 14. N. Y., M. J. KELLY,

Pr..sld.lDt; M. B. LONG. s.,,,,retary and. Trell.!lul:'er. Subscription l $2.00 per

year; ForOligo, $2.60 per year. Che",ks should l.ol thode payaLle to Bell Laborn.

toriesRecord and addressed to the Circulation Manager. Pr~nted In U. S. A.

THE COVER - A simple pouring operation, yet it symbolizes

many new Bell Laboratories developments (see page 447). The

plastic hardens around tiny electronics, components, includ

ing transistors, to give a small and rugged plug-in unit.

EDITORIAL STAFF

J. D. Tebo, Editor

G. E. Schindler, Jr., Assistant Editor; Murray ,Wl

R. C. Sanford, .t\ssistant Editor

R. L. Shepherd. Production Editor



contents · contents echo and its effects on the telephone user, g. m. phillips semiconductors:...

Documents