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'
Courtesy www.historyofphonephreaking.org
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
F. J. Singer, Chairman
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
Courtesy www.historyofphonephreaking.org
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.
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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
R. L. Shepherd, Production Editor
T. N. Pope, Circulation Manager
Courtesy www.historyofphonephreaking.org
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
F. J. Singer, Chairman
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 --:~'+
R. L. Shepherd, Production Editor
T. N. Pope, Circulat~onManager
Courtesy www.historyofphonephreaking.org
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
F. J. Singer, Chairman
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
R. L. Shepherd, Production Editor
T. N. Pope. Circulation Manager
Courtesy www.historyofphonephreaking.org
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
Courtesy www.historyofphonephreaking.org
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. C. Sanford, Assistant Editor
R. L. Shepherd, Produotion Editor
T. N. Pape, Circulation Manager
Courtesy www.historyofphonephreaking.org
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
F. J. Singer, Chairman
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. C. Sanford, Assistant Editor
R. L.' Shepherd., Production Editor
T. N. Pope" CtrculatiOti Manager
Courtesy www.historyofphonephreaking.org
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
F. J. Singer, Chairman
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
Courtesy www.historyofphonephreaking.org
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, $2.60 per year. CLecks should be made paYable to Bell Labora
torie.. Record a.nd addrell..ed t4 tLe ClrcuJation MAnager. Printed in U. S. A.
401
405
410
415
417
421
424
427
431
EDITORIAL BOARD
F. J. Singer, Chairman
A. C. Dickieson
F. A. Korll
S. Millman
R. J. Nossaman
W. E. Reichle
EDITORIAL STAFF
J. D. Tebo. Editor
C. B. MacKenzie, A"istantEditor
G. E. Schindler, Jr., AMistant Editor, Murray Hill.
R. C. Sanford, Assistant Editor
R. L. Shepherd, Production Editor
T. N. Pope. Circulation Manager
Courtesy www.historyofphonephreaking.org
.-
1
CONTENTS
441
447
452
457
462
4,67
471
475
EDITORIAL BOARD
F. J. Singer, Chairman
A. C. Dickieson
F. A. Kom$ 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
T. N. Pope, Circulation Manager
Courtesy www.historyofphonephreaking.org