Sam's Telecomms Documents Repository
Sam's Telecomms Documents Repository
Documents from other sources
| London All-Figure Exchanges | Small reminder card published circa 1966. Lists each all-figure code with its geographic location. Courtesy of Jim Reynolds [194 kB] |
| Auteldac Weatherproof Telephone | Installation handbook for the Auteldac 720 range of weather resistant telephones from DAC (now Gaitronics). [133 kB] |
| Circuit Symbols | Description of scalable images of electromechanical circuit symbols in Windows Metafile format. Download the Zip file symbols.zip (141kB) |
| Cable Simulator | A friend built this along time ago to simulate PO cable types to assist with testing equipment. Component values and photos to show construction. [374 kB] |
| Dictograph Flyer Dictograph Explanatory diagram Dictograph Users Handbook Dictograph circuit for system with one master |
Dictograph office telephone systems: a promotional flyer and explanatory circuit diagram, both circa 1936, user's handbook (digital recreation), possibly 1950s, and a circuit for one master station and two subs, dated 1953, converted from a blueprint. Courtesy of my correspondent in Australia. [ 239kB, 512kB & 102kB ] |
| Electronic Exchange Systems Part 1 Electronic Exchange Systems Part 2 A Century for TXE4 |
Two articles from The IEE Proceedings by Tommy Flowers, famous for his work at Bletchley on the Colossus computer but by 1971 working at STC on electronic exchanges. The structure and low-level control of the TXE are described in Part 1: Part 2 looks at the registers, common control and the system as a whole. [1.4 MB & 1.3 MB] An article from the IEE magazine Electronics & Power from 1980 celebrating the 100th installation of a TXE4 exchange from STC with a description of the operation. [814 kB] |
| French PTT S63 Telephone |
Courtesy of John Mulrane a redrawn version of the internal paster label with English captions. [12 kB] |
| GEC Telecommunications, August 1956 Contents & photographs
GEC: New High Performance from Subscribers' Telephones |
Courtesy of Andrew in Australia, the contents page of the GEC house mag from 1956 & colour photo of the 1000 range [73 kB] Followed by the first of two articles describing the design behind the new 1000 range of telephones. [1.6 MB] |
| GEC 1000 Telephone |
The second of two articles describing this new introduction to their range of telephones, the 1000 model. [128 kB] |
| GTE Flip-Phone. US Customer Information Flip Caller 788 - Instruction Manual UK Flip-Phone Instrtuctions |
Original USA versions and UK version of user instructions. [220 kB, 426 kB & 631 kB] |
| Lineman's telephone, No 704. | Installation and operating instructions 69kB |
| Lineman's telephone, DSTS 5. | Chesilvale (now Tempo) Dual-Standard Test Set No 5, DSTS5, operating instructions - reconstructed from OCR text. Original courtesy of John Goldfinch and Tempo. 357 kB |
| Loading of Telephone Cables | A 1974 guide from STC on the principles of cable loading and selection of suitable coils. 292 kB |
| Pasters & Labels | A collection of telephone pasters - the labels with a circuit diagram stuck inside the case of telephone. Acquired from various sources. 529 kB |
| Plessey 5005 Crossbar System | Technical description of Plessey's 5005 Crossbar system. 91 pages with coloured diagrams. 6.8 MB |
|
Plessey Telephones Plessey Etelphone N1905 Plessey Etelphone N1906 |
Plessey Etelphone N1905 Manual. Equivalent to a Planphone, but all contained in a 706 body. 735 KB Plessey Etelphone N1906 Manual. Similar to the above. 821 KB |
Plessey Weatherproof 745 type telephone Weatherproof CB Telephone Weatherproof Magneto Telephone |
Plessey Weatherproof 745 Type Telephone (as in Railways section) CB Version - vandal resistant. Plessey manual including A2 sized drawing. 822kB Magneto Version (Transistor ringing). Plessey manual includes large drawing. 453 kB |
| Pneumatic Protection of Telephone Cable Networks | An article about pressurisaiton of cables, probably produced by Drallim Ltd, with some of my photographs added. 67kB |
| Poste téléphonique à transistors expérimental | An article from French telecomms journal 'Commutation et électronique' from 1969, describing an experimental telephone using transistors both for amplification and as the hybrid. In French. Courtesy of Andrew Marland 796 kB |
| Racal RA705 Weatherproof Telephone RA705/2000 CB Telephone RA705/4000 Autodialler Telephone RA705/2000 CB Telephone - later version RA705 Circuit Diagrams |
Racal Acoustics RA705 Series weatherproof telephone User and Installation guide. Early typescript guide for the 2000 series CB 88 kB Early typescript guide for the 4000 series autodialler 92 kB Later (1987) printed guide for the 2000 series. 379 kB Circuit diagrams of CB version and auto version. 401 kB |
| STC 4117 PAX Circuit Handbook STC 4117 PAX Connect Circuit |
The STC 4117 private automatic exchange (PAX) catered for 50 to 100 llines and was widely used on British Railways for internal communications within depots and large offices. This handbook must have been copied in the 1970s before the widespread use of Xerox copiers [535 kB]. British Railways Eastern Region drawing No 101557 shows the connect circuit for the 4117 PAX base on STC drawing 499 LSU 2400. An A1 dyeline print. [107 kB] |
| Post Office Charge Groups | A map of the UK mainland showing the telephone groups on which charging was based. Created by staff on British Railways for their own reference purposes. See also the STD Equivalents List below. |
| Siemens Report W923, Motor Uniselector | Courtesy of John Mulrane. This is a detailed description of the construction and operation of the motorised uniselector as used widely in the PO trunk switching network. Excellent photographs. Dated 1934.646kB |
| STD Equivalents List | A list of the Post Office Subscriber Trunk Dialling codes showing the way the routing in the trunk switching network worked. See also the Charge Group map above. 68 kB |
| STD Code Map | A map that an unknown person originally produced in AutoCad (originally dated 25-Apr-1991 12:16). The STD Codes on the Map are correct for the era May 1990 to April 1995. It's 893 x 1490 mm so may need to be printed in parts. Courtesy of Mike Ginger187 kB |
| Subscribers' Extension Plans | A booklet prepared by the late Thomas Rhoden with descriptions and sketches of the various plan workings used by the Post Office. It also includes the N-diagram numbers for each. Updated to include Plans 108 & 108a 823 kB |
| Telephones: Their construction and fitting | A practical treatise on the fitting up and maintenance of telephones and their auxiliary apparatus. The first two chapters on Receivers and Transmitters of a text book by F.C. Allsop published by E. & F.N. Spon, London 1895. Courtesy of John Goldfinch. 2.7 MB |
| TIM 2000 | A digital recreation of the good old-fashioned Post Office Speaking Clock with the voice of Pat Simmonds. [HTML] |
| Western Eletric Vacuum Tubes for use with Amateur Radio | Catalogue from 1933 of valves made by the WeCo. Normally only available to the trade, they were made available to amateurs as a 'concession'. Looking at the prices at the end it wasn't much of a concession. Thanks to Steve Cichorsky for posting this on Greenkeys mailing list. 2.1 MB |
Repository Index