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Folder Western Electric

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pdf SD-69226-01 I2D F-50682 Telephone Set - 2- or 4-wire Popular

Published on 02 March 2011 909 downloads

Download (pdf, 51 KB)

SD_69226_01_F50682_TelephoneSet_PrivateLineStationCircuit.pdf

SD-69226-01 I2D F-50682 Telephone Set - 2- or 4-wire

March 1959. Contributed by Steve Cichorsky.

pdf CDs and SDs "Flashcards" for SxS - by Monarch Molding Popular

Published on 28 February 2011 1295 downloads

Download (pdf, 1.69 MB)

SXS_SD_CD_RefCards_MonarchMolding.pdf

CDs and SDs "Flashcards" for SxS - by Monarch Molding

Step by Step info abstracted from the SDs and CDs by Monarch Molding, Inc.
SD/CD-31739-01 SXS, Combination Connector Circuit - Local Call
SD/CD-31739-01 SXS, Combination Connector Circuit - Toll Call
SD/CD-30228-01 SXS, Combination Connector Circuit - Local Call
SD/CD-30228-01 SXS, Combination Connector Circuit - Toll Call
SD/CD-30215-01 SXS, Local Rotary Hunting Connector
SD/CD-31530-01 SXS, 200 Point Line or Trunk Finder
SD/CD-30200-01 SXS, 3-Wire Selector Circuit
SD/CD-30976-01 SXS, Digit Absorbing Selector
Contributed by Dennis Hock. Scan edited by Steph Kerman.

pdf SD-69654_01 i3D1 - 7A Comm System - Com Key Phones Popular

Published on 30 January 2011 Modified on 28 April 2018 1092 downloads

Download (pdf, 2.87 MB)

SD_69654_01_I3D1_7A_Phones.pdf

SD-69654_01 i3D1 - 7A Comm System - Com Key Phones

Phones used with the ComKey 718 systems (7A communications system). 832, 2832, 575AM and 2575AM. Contributed by Bruce Lane.

pdf SD-69658-01 I5B 6xxPanels Popular

Published on 30 January 2011 1339 downloads

Download (pdf, 2.35 MB)

SD_69658_01_I5B_6xxPanels.pdf

620 and 640-series modular panels used in late-issue 1A2 key systems. Contributed by Bruce Lane.

pdf SD-69909-01 i8D1 Aug79 - 4A Speakerphone Popular

Published on 30 January 2011 Modified on 26 April 2021 1350 downloads

Download (pdf, 3.45 MB)

SD_69909_01_I8D1_4ASpkr.pdf

SD-69909-01 i8D1 Aug79 - 4A Speakerphone

Full set of schematics for the type 4A speakerphone system, including connections to compatible phones. SD-69909. See BSP 512-700-100. Contributed by Bruce Lane.

pdf SD-69931-01 I8D1 478A Touch Tone Adapter Popular

Published on 30 January 2011 1163 downloads

Download (pdf, 2.08 MB)

SD_69931_01_I8D1_478A_TTAdapter.pdf

SD-69931-01 I8D1 478A Touch Tone Adapter

Type 478A TouchTone adapter, as used in late-issue 1A2 intercom systems. Contributed by Bruce Lane.

pdf SD-69942-01 I4B1 400H Line Card Popular

Published on 30 January 2011 1293 downloads

Download (pdf, 780 KB)

SD_69942_01_I4B1_400H_LineCard.pdf

400H CO/PBX line card, the last such card Western Electric made. Contributed by Bruce Lane.

pdf SD-82227-01 I1 79B1 Power Supply Popular

Published on 30 January 2011 1224 downloads

Download (pdf, 531 KB)

SD_82227_01_I1_79B1_PowerSupply.pdf

79B1 power supply, used with 1A2 modular key systems. Contributed by Bruce Lane.

pdf SD-82227-02 I4B 79B2 & 79B3 Power Supply Popular

Published on 30 January 2011 1510 downloads

Download (pdf, 837 KB)

SD_82227_02_I4B_79B2_79B3_PowerSupply.pdf

79B2 and 79B3 power supplies. Same functionality as the 79B1, just later production runs. Contributed by Bruce Lane.

pdf SD-69559-01 I11D Tie Line Popular

Published on 30 January 2011 1193 downloads

Download (pdf, 5.11 MB)

SD_69559_01_I11D_TieLine.pdf

400-series tie-line circuit KTU's, including the 415, 416 and 461. Contributed by Bruce Lane.

pdf SD-69561-01 I2 Conference Circuit Popular

Published on 30 January 2011 1153 downloads

Download (pdf, 422 KB)

SD_69561_01_I2_ConferenceCircuit.pdf

Standard CO line conferencing circuit used in 1A2 key systems, including the 417A KTU. Contributed by Bruce Lane.

pdf SD-69567-01 Dial Selective Intercom Line Circuit Popular

Published on 30 January 2011 Modified on 28 April 2018 1238 downloads

Download (pdf, 6.56 MB)

SD_69567_01_DialSelectiveIntercomLineCt.pdf

SD-69567-01 Dial Selective Intercom Line Circuit

Dial-selective intercom KTU's used in 1A2 systems, primarily with the 640-series modular panels and 7A thru 27A Com Key (ComKey) systems (not the 416 series). It includes details on the 407B and C, 420A, 422A and B, 423A, 424A, B and C, 425A and B, 444A, 491A and 494A and B KTU's. Contributed by Bruce Lane.

pdf SD-69595-01 I10D Touch Tone Adapters Popular

Published on 30 January 2011 1078 downloads

Download (pdf, 2.04 MB)

SD_69595_01_I10D_TTAdapters.pdf

Touchtone adapters for the 426A and 427A KTU's, which are early TouchTone adapters for dial intercoms in 1A2 gear. Contributed by Bruce Lane.

pdf SD-69627-01 I2B 109A110A Audio On Hold Popular

Published on 30 January 2011 1154 downloads

Download (pdf, 755 KB)

SD_69627_01_I2B_109A110A_AudioOn Hold.pdf

Voice Connecting Arrangements - 109A and 110A Audio-on-Hold KTU's. They're normally used in a 642-series auxiliary panel, in conjunction with 400G series line cards. It may be possible to use them with 400D's or earlier/later line cards. I've not tried it. Contributed by Bruce Lane.

pdf SD-69651-01 I5D 400G Line Card Popular

Published on 30 January 2011 1055 downloads

Download (pdf, 359 KB)

SD_69651_01_I5D_400G_LineCard.pdf

400G CO/PBX line card. Contributed by Bruce Lane.

pdf SD-69529-01 I10D - Type 247B TouchTone adapter Popular

Published on 30 January 2011 1214 downloads

Download (pdf, 2.72 MB)

SD_69529_01_I10D_247B_TouchtoneAdapter.pdf

SD-69529-01 I10D - Type 247B TouchTone adapter

U sed in the 6A Business Interphone system and in many 1A2 KTS intercom systems. Contributed by Bruce Lane.

pdf SD-69652-01 I4D1 7A Communications System - Comkey718 Popular

Published on 30 January 2011 1199 downloads

Download (pdf, 14.00 MB)

SD_69652_01_I4D1_7ASys_Comkey718.pdf

SD-69652-01 I4D1 7A Communications System - Comkey718

86 pages. Contributed by Bruce Lane.

pdf SD 95277-02 Issue 7B - Transmission Measuring Milliwatt Distributing Circuit Popular

Published on 29 January 2011 1229 downloads

Download (pdf, 647 KB)

SD_95277_02_I7B_Nov78_TransmissionMeasuringCircuit.pdf

SD 95277-02 Issue 7B - Transmission Measuring Milliwatt Distributing Circuit

Using 71F Milliwatt Reference Generator. Contributed by Mike Mangus.

pdf CD 95277-02 Issue 3B - Transmission Measuring Milliwatt Distributing Circuit Popular

Published on 29 January 2011 2176 downloads

Download (pdf, 410 KB)

CD_95277_02_TransmissionMeasuringCircuit.pdf

CD 95277-02 Issue 3B - Transmission Measuring Milliwatt Distributing Circuit

Using 71F Milliwatt Reference Generator. Contributed by Mike Mangus.

pdf CD-1E059-01 I5B PBX 51A Centrex Data Receiver and Transmitter Circuit Popular

Published on 22 January 2011 1865 downloads

Download (pdf, 680 KB)

CD_1E059_01_I5B_PBX_51A_CentrexDataReceiverTransmitter.pdf

CD-1E059-01 I5B PBX 51A Centrex Data Receiver and Transmitter Circuit

Contributed by Steve Cichorsky.

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Recent Contributors

Thanks for new documents from Ed Palazzo, Bruce Patterson, Jon Kolger, Paul Ivester, Len Hicken, Paul Fassbender, Fred Haynes, Kurt Rudolph, Wade ("Kellogg KITT"), the Connections Museum, Rick Walsh, Jeff Lamb, Jeremy Walters, Mark Cuccia, Alan David, Harry Joseph, Charlie Terry, Karl Brose, Dennis Hock, Tim Griffin, Remco Enthoven, and Steve Cichorsky.

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