Sam's Telecomms Documents Repository
Sam's Telecomms Documents Repository
Post Office InformationPlease see the note about Crown Copyright on the index page.
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3000 Type Relay Data Post Office data sheets on the 3000 Type relays. Introduction (80 kB) 1970 Data Sheets (3896 kB) BR copy 1980 Data Sheets (3091 kB) Courtesy of Paul Ebling | |
| Cable Pressurisation | Post Office Notes for Internal Students, "A short appreciation of the need for the awareness by all staff, both internal and external, of cable maintenance methods and aims." [159 kB] |
| Dial Adjustment & Maintenance MAI No 25 MAI No 26 |
Dial adjustment and maintenance instructions for Trigger type (No 25) and Slipping Cam type (No 26) [816 kB and 1.2 MB] |
| Description and Adjustment of Dial Mechanisms | Technical Instruction from 1928 Part 24A. Description and adjustment for Dials, Auto No 10 also Nos 1, 3, 6 and 8. Courtesy of Laurence Rudolph [3.8 MB] |
| Educational Pamphlets Draft Series Telephones 1/1 Telephones 3/1 Telephones 3/4 Telephones 4/1 Lines 3/4 |
Post Office educational pamphlets. An excellent introduction to telephony topics. Draft Series issued in typescript. Telephones Draft Series 1/1: Local and Central Battery Telephones [2.2 MB] Telephones Draft Series 3/1: Automatic Step System [442 kB] Telephones Draft Series 3/4: Ordinary Final Selectors [1.4 MB] Telephones Draft Series 4/1: Uniselector Mechanisms [1.8 MB] Lines Draft Series 3/4: Protective Devices used in telephone and telegraph lines (eg fuse, heat coils etc) [1.2 MB] |
| Educational Pamphlets Final Series General 2/1 Technical Electricity 1/1 Telephones 1/1 Telephones 2/3 Telephones 2/4 Telephones 3/1 |
Post Office educational pamphlets. Final series, fully typeset. General 2/1: Standard Graphical Symbols [1.6 MB] Technical Electricity 1/1: The Telephone Relay [1.2 MB] Telephones 1/1: The Trunk Demand Service [342 kB] Telephones 2/3: Automatic Telephone Circuit Elements [1.5 MB] Telephones 2/4: The Automatic Telephone Dial [387 kB] Telephones 3/1: Automatic telephone- Non-Director Multi-Exchange Areas [515 kB] |
| Engineering Instructions T1012 Tester AT5422 |
Very few EIs remain in my collection, but I found this one by chance. It describes the Test Set usually installed at PABXs and small exchanges. [250kB] |
| House Exchange System - Q-Diagrams | In addition to public exchange systems the British Post Office also supplied intercom systems under the title House Exchange System. It was documented in a series of Q-diagrams. A numerical listing of the Diagrams can be found here |
| Key & Lamp Unit SA/SAW 9154 SA 9156 SA/SAW 9157 SA/SAW 9228 |
SA 9154 - Key and Lamp Units Nos 2A and 10A 108 kB SA 9156 Order Table Working with K&L Unit No 2A or 10A, and UAA SA9151 Up to 20 Exchange lines or PBX Extensions - 5 sheets.[760 kB] SA 9157 Order Table Working with K&L Unit no 2A, Special Applications. This means various types of private wire - 9 sheets.[791 kB] SA 9228 Jack Unit No 1B [74 kB] |
| Loudspeaking Telephone No 4 | User Instruction Card |
| New Telephone Wiring System | Guide to the design and installation of the plug and socket wiring system introduced following liberalisation of the telephone instrument market. Courtesy of John Hein. [579 kB] |
| PABX 3 Drawings SAW 81071 SAW 81510 SAW 81520 & Notes SA 8153-1 & Notes SAW 81532 SAW 81581 & Notes SAW 81582 SAW 81600 |
The circuit drawings for various parts of a PABX 3. SA is a schematic, SAW is a routed schematic with wiring instructions. Diagram Notes Courtesy of John Griffiths. SAW 81071 Ring & Tone [229kB] SAW 81510 Extension Line & Finder (ATE Dwg No TG1713 based on AT8151) [190kB] SAW 81520 1st Group Selector Diagram [118kB] Notes [35 kB] SA 8153-1 Final Selector, earlier version Diagram [92kB] Notes [36 kB] SAW 81532 Final Selector, later version [103kB] SAW 81581 Exchange Line Circuit, earlier version Diagram [225kB] Notes [49 kB] SAW 81582 Exchange Line Circuit, later version with pencil alterations for Railway use [194kB] SAW 81600 2nd Group Incoming & Enquiry Selector [116kB] |
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Post Office Electrical Engineers' Journal Index for 1936 to 1946 Index for 1976-77 |
Indices to volumes of the Institute of Post Office Electrical Engineers Journal, usually abbreviated to POEEJ. Searchable PDFs, courtesy of Paul Ebling and Jack Ryan. Index to Volumes 29 to 38 from 1936/7 to 1945/6. 101 kB Index to Volumes 69 from April 1976 to Jan 1977. 726 kB |
| Rapport Plus | User guide for the Rapport Plus combined telephone and answering machine. 52pp 5.9 MB |
| Sceptre 100 | Sceptre 100 -Telephone No 10001: Guide notes (Customer Apparatus) These guide notes have been designed to assist field staff with the installation and maintenance of Sceptre. 20pp 662kB |
| STD Code Book 1984 STD codes text alpha sort STD codes text numerical sort Corrections STD Code Book Reading 1965 STD Code Book Tunbridge Wells 1976 STD Code Book Haddenham1984 |
A complete STD code book for 1984 converted to text from Haddenham & Long Crendon Issue 4. 22 pages [107 kB] Two plain text files containing the raw data in tab-delimited form and sorted alphabeticall and numerically. [99 kB each] and an update file containing corrections made since the first issue of 16 Jun 2010. For comparison, image scans of the Reading STD Code Book for 1965 - uses the original letter codes. Courtesy of Rob Grant. 12 pages [798 kB] and then the Tunbridge Wells Book for 1976, Courtesy of Remco Enthoven, 48 pages [2.9 MB] and finally the image scan of the book used to create the text versions above. [2.5 MB] |
| Technical Pamphlets for Workmen F8 Wiring of Subscribers' Premises |
A series of very informative booklets for Post Office staff. First published in 1919 and revised and reprinted up until the mid 1930s. F8 Wiring of Subscribers' Premises takes us back to an era when a PO installation was a piece of true craftmanship. Digital recreation from an original owned by Hywel Clatworthy.[375 kB] |
| Telecommunications Instructions B2820 Keyphones F1011 Doric F1012 Harmony M0045 Card Callmaker |
Again very few of these remain in my collection. B2820 Keyphones Keyphones with Code C DC signalling. [82kB] F1011 Doric Amplifier and Loudspekaer No 11A, Doric [26kB] F1012 Harmony Amplifier and Loudspekaer No 12A, Harmony [145kB] M0045 Card Callmaker Marketing Instruction, Card Callmaker [140kB] |
| TE & Loop Resistance | A 140. Transmission Equivalents and loop resistance of loaded and unloaded cable circuits. 30kB |
| History of the Telephone Instrument | A wall poster produced by British Telecom for use in schools. It shows various stages in the development of telephone instruments culminating in the push-button telephone. Reduced to A3 size 998 kB |
| The History of the Telephone | A later wall poster for use in schools. It shows key milestones and dates in the development of telephony up until the early mobiles. Reduced to A3 size 1.6 MB |
| The Language of Success | Saying the righ things at the right time. An A5 booklet from BT in 1991 that offers advice on making the most of your telephone calls both at work and at home. Courtesy of Mike Tyrrell. 36 pages 965 kB |
| Public telephones | A 32-page booklet for schools telling the history of public phones from the early silence cabinets to the modern designs of the 1980s. Terrific pictures. LARGE FILE 12 MB |
| The Story of the Telephone | A lavishly illustrated 47-page educational booklet issued for use in schools. It dates from the 1970s. LARGE FILE 14 MB |
Repository Index