BLR

See Chuck Hensley's comprehensive index to articles in the BLR in the folder below.  It can be used to locate articles to research, whether found in the TCI LIbrary or elsewhere.

Chuck has offered to scan a limited number of pages from his collection (at his convenience).  Send requests using the "Contact Us" link in the Menu Bar above.

HINT:  Search for "BLR" followed by a topic keyword to find a series of related articles.  Use alphabetic sort to display them in chronological order.  e.g.  BLR PBX  or  BLR Picturephone.

When posted, complete scanned BLR issues were available here:
  http://www.americanradiohistory.com/Bell_Laboratories_Record_Issue_Key.htm

Documents

Order by : Name | Date | Hits [ Ascendant ]

63Aug BLR P273 Trimline Ending Dial In Handset Trials 63Aug BLR P273 Trimline Ending Dial In Handset Trials

Date added: 06/13/2013
Date modified: 06/13/2013
Filesize: 153.83 kB
Downloads: 307

Bell Laboratories Record. Contributed by Chuck Hensley.

63Jan BLR P2 FM Data Set 63Jan BLR P2 FM Data Set

Date added: 06/13/2013
Date modified: 06/13/2013
Filesize: 1.86 MB
Downloads: 562

Bell Laboratories Record. Contributed by Chuck Hensley.

63Jan BLR P12 PBX Range Charts 63Jan BLR P12 PBX Range Charts

Date added: 06/13/2013
Date modified: 06/13/2013
Filesize: 1.35 MB
Downloads: 368

Bell Laboratories Record. Contributed by Chuck Hensley.

63Jun BLR P218 Home Interphone 63Jun BLR P218 Home Interphone

Date added: 06/13/2013
Date modified: 06/13/2013
Filesize: 1.56 MB
Downloads: 478

Bell Laboratories Record. Contributed by Chuck Hensley.

63Jun BLR P237 PBX Consoles 63Jun BLR P237 PBX Consoles

Date added: 06/13/2013
Date modified: 06/13/2013
Filesize: 1.13 MB
Downloads: 866

Bell Laboratories Record. Contributed by Chuck Hensley.

63Oct BLR P354 Testing TouchTone Set 63Oct BLR P354 Testing TouchTone Set

Date added: 06/13/2013
Date modified: 06/13/2013
Filesize: 1.62 MB
Downloads: 854

Bell Laboratories Record. Contributed by Chuck Hensley.

64Aug BLR P247 761A PBX Small Hotel Motel 64Aug BLR P247 761A PBX Small Hotel Motel

Date added: 06/13/2013
Date modified: 06/13/2013
Filesize: 1.58 MB
Downloads: 368

Bell Laboratories Record. Contributed by Chuck Hensley.

64May BLR P159 Handsets With Amplifiers G6 G7 G8 64May BLR P159 Handsets With Amplifiers G6 G7 G8

Date added: 06/13/2013
Date modified: 06/13/2013
Filesize: 1.22 MB
Downloads: 339

Bell Laboratories Record. Contributed by Chuck Hensley.

65Nov BLR P395 Designing Telephone Ringers 65Nov BLR P395 Designing Telephone Ringers

Date added: 06/13/2013
Date modified: 06/13/2013
Filesize: 1.06 MB
Downloads: 554

Bell Laboratories Record. Contributed by Chuck Hensley.

65Sep BLR P344 Trimline Introduction 65Sep BLR P344 Trimline Introduction

Date added: 06/13/2013
Date modified: 06/13/2013
Filesize: 289.58 kB
Downloads: 428

Bell Laboratories Record. Contributed by Chuck Hensley.

66Jan BLR P9 Trimline A Telephone Evolution 66Jan BLR P9 Trimline A Telephone Evolution

Date added: 06/13/2013
Date modified: 06/13/2013
Filesize: 1.8 MB
Downloads: 421

Bell Laboratories Record. Contributed by Chuck Hensley.

66Jan BLR P16 New Coin Look 66Jan BLR P16 New Coin Look

Date added: 06/13/2013
Date modified: 06/13/2013
Filesize: 1.24 MB
Downloads: 477

Bell Laboratories Record. Contributed by Chuck Hensley.

66Jan BLR P20 Single Slot Payphone 66Jan BLR P20 Single Slot Payphone

Date added: 06/13/2013
Date modified: 06/13/2013
Filesize: 742.98 kB
Downloads: 587

Bell Laboratories Record. Contributed by Chuck Hensley.

66Jan BLR P24 CALL A MATIC 66Jan BLR P24 CALL A MATIC

Date added: 06/13/2013
Date modified: 07/14/2014
Filesize: 957.05 kB
Downloads: 542

Call-a-matic Dialer. Bell Laboratories Record. Contributed by Chuck Hensley.

66Jan BLR P34 Designing Telephone Components 66Jan BLR P34 Designing Telephone Components

Date added: 06/13/2013
Date modified: 06/13/2013
Filesize: 1.03 MB
Downloads: 241

Bell Laboratories Record. Contributed by Chuck Hensley.

66Mar BLR P85 Key Telephone Systems 1A2 KSUs 66Mar BLR P85 Key Telephone Systems 1A2 KSUs

Date added: 06/13/2013
Date modified: 06/13/2013
Filesize: 1.45 MB
Downloads: 536

Bell Laboratories Record. Contributed by Chuck Hensley.

66Nov BLR P319 Trimline TouchTone Integrated Circuit 66Nov BLR P319 Trimline TouchTone Integrated Circuit

Date added: 06/13/2013
Date modified: 06/13/2013
Filesize: 1.11 MB
Downloads: 309

Bell Laboratories Record. Contributed by Chuck Hensley.

57Feb BLR P48 Tone Ringer 57Feb BLR P48 Tone Ringer

Date added: 05/20/2013
Date modified: 05/20/2013
Filesize: 1.7 MB
Downloads: 516

Bell Laboratories Record, February 1957.  Field Trials in Americus, GA and Crystal Lake, IL. Contributed by Chuck Hensley.

57Jan BLR P6 Answering Service Switchboards 57Jan BLR P6 Answering Service Switchboards

Date added: 05/20/2013
Date modified: 05/20/2013
Filesize: 893.43 kB
Downloads: 1097

Bell Laboratories Record, January 1957.  557A (secretary and PBX) and 557B (answering service).  Contributed by Chuck Hensley.

57Jan BLR P15 Dial Testing 57Jan BLR P15 Dial Testing

Date added: 05/20/2013
Date modified: 05/20/2013
Filesize: 1 MB
Downloads: 580

Bell Laboratories Record. Contributed by Chuck Hensley.

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