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The Wireless-Set-No.19 Established & Designed in England 1940

For the open exchange of information and opinions about collecting, restoring, maintaining, and operating the Wireless Set No. 19 and other HF radios used by the Allied forces during and after World War II. For organising operating events with the broadest possible participation. ALL collectors of vintage military communications equipment are most welcome.

GPO Technical Pamphlets for Workmen

The relationship between the General Post Office Engineering Department and the Royal Signals has always been close. From the Great War onwards, Post Office engineering staff have joined the Territorial Army and between the Wars, the majority of the men in the various R Signals regiments of the TA were PO engineers. We must not forget the women who were switchboard operators with the GPO and performed similar duties in R Signals after the outbreak of war. Much of the information on this site cocerns the work of R Signals with operational uints, but the higher formations also had huge communication requirements, often over great distances. In particular, communications between operational units and their supply bases was the responsibility of the Lines of Communication (LofC) organization, and R Signals also provided a great deal of communication facilities both to, and within the UK.
In the first half of the 20th century, the available channels of electronic communication were, in order of appearance, telegraphy, magneto telephony, type printing telegraphy and automatic telephony. But, of course, that was exactly how the GPO's public services developed and with them, the techniques and expertise of GPO engineering staff. So the army's requirement was exactly matched by the the GPO's systems and services - hence the realtionship between the two. More details on this can be found in the excellent memoir "Signal Venture" by Brig. L H Harris, Head of Telecomms for SHAEF and latterly GPO Chief Engineer.
Just like the Army, the GPO placed emphasis on training programmes and published a large number of training documents, amongst which was a long series of pamphlets called "Technical Pamphlets for Workmen". These provide an interesting insight into the technology which would be second nature to any GPO engineer who also served with R Signals.

The list below contains every pamphlet in the series, most of which are available for download, some with more than one issue date. These documents do not require passwords - simply right-click the link on the date and select "Save As".

We don't have all the pamphlets (yet), and if you can supply any of the missing ones, please let us know via the Wireless-Set-No19 group.

Group A - Fundamentals
A1
Magnetism and Electricity 1929, 1938
A2 
Primary Batteries 1929 
A3 
Technical Terms 1919, 1937 
A4 
Test Boards 1934
A5 
Protective Fittings 1929
A6 
Measuring and Testing Instruments 1934
A7 
Sensitivity of Apparatus 1926
A8 
Standard List of Terms and Definitions unsed in Telegraphy and Telephony 1936 
A9 
Standard Graphical Symbols for Telegraphy, Telephony and Radio Communication 1934 

Group B - Telegraphy
B1
Elementary Principles of Telegraphy and Systems up to Morse Duplex 1936
B2 
Telegraph Concentrators 1932 
B3 
Wheatstone System, Morse Keyboard Perforators 1932 
B4 
Quadruplex, Quadruplex Repeated Circuits and Telegraph Repeaters, Simplex and Duplex 1919 
B5 
Hughes Type-printing Telegraph 1936 
B6 
Baudot Multiplex Type-printing System 1934 
B7 
Western Electric Duplex Multiplex, Murray Duplex Multiplex, Siemens and Halske Automatic Type-printing System Don't have it yet!
B8 
Fire Alarm Systems Don't have it yet!

Group C - Radio Communication
C1 
Wireless Transmission and Reception 1935
C2 
Interference with Reception of Broadcasting Don't have it yet!

Group D - Manual Telephony
D1
Elementary Principles of Telephony 1919, 1936
D2
Telephone Transmission, "Loading" Telephone Repeaters and Thermionic Valves Don't have it yet!
D3
Principles of Telephone Exchange Signalling 1938 
D4 
Magneto Exchanges - Non-Multiple Type 1937 
D5 
Magneto Exchanges - Multiple Types 1926, 1937 
D6 
C.B.S. No. 1 Exchanges - Non-Multiple Type 1929, 1937 
D7 
C.B.S. Exchanges - Multiple Types 1937 
D8 
C.B.Exchanges - No. 9 Type 1935. 1937 
D9 
C.B.Exchanges - No. 10 Type 1919 
D10 
C.B.Exchanges - No. 12 Type 1919 
D11 
C.B.Exchanges - 22 Volts 1919, 1926
D12 
C.B.Exchanges - 40 Volts 1925
D13 
Trunk Telephone Exchanges 1919 
D14 
Maintenance of Manual Telephone Exchanges 1919, 1929, 1946 
D15 
Telephone Testing Equipment 1929 
D16 
Routing Testing for Manual Telephone Exchanges 1924, 1929, 1938  
D17 
Internal Cabling and Wiring 1922, 1935 
D18 
Distribution Cases, M.D.F. and I.D.F. 1919 
D19 
Cord Repairs 1938 
D20 
Superposed Circuits, Transformers, Bridging Coils and Retardation Coils 1936 
D21 
Call Offices Don't have it yet!
D22 
Units Amplifying 1935

Group E - Automatic Telephony
E1
Automatic Telephony : Step by Step Systems 1929 
E2 
Automatic Telephony : Coded Call Indicator (C.C.I.) Working 1927 
E3 
Automatic Telephony : Keysending "B" Positions Don't have it yet!

Group F - Subcribers' Apparatus
F1 
Subscribers' Apparatus - Common Battery Systems 1936 
F2 
Subscribers' Apparatus - C.B.S. 1924
F2 
Subscribers' Apparatus - C.B.S. Part 1 : C.B.S. No.1 System 1938 
F3 
Subscribers' Apparatus - Magneto 1928 
F4 
Private Branch Exchanges - Common Battery Systems 1919, 1922 
F5 
Private Branch Exchange - C.B. Multiple No. 9 1919, 1933 
F6 
Private Branch Exchanges - Magneto 1929, 1935 
F7 
House Telephone Systems 1919, 1930 
F8 
Wiring of Subscribers' Premises 1919, 1936 

Group G - Power
G1 
Maintenance of Secondary Cells 1919, 1929, 1938 
G2 
Power Plant for Telegraph and Telephone Purposes 1919, 1932 
G3 
Maintenance of Power Plant for Telegraph and Telephone Purposes 1936 
G4 
Telegraph Battery Power Distribution Boards 1919 

Group H - Construction
H1 
Open Line Construction, Part I 1937 
H2 
Open Line Construction, Part II 1919 
H3 
Open Line Maintenance 1929 
H4 
Underground Construction, Part I - Conduits 1936 
H5 
Underground Construction, Part II - Cables 1936 
H6 
Underground Maintenance 1937 
H7 
Cable Balancing 1936 
H8 
Power Circuit Guarding 1932 
H9 
Electrolytic Action on Cable Sheaths, etc. 1937 
H10 
Constants of Conductors used for Telegraph and Telephone Purposes 1932, 1936 

Group I - Submarine Cable
I1
Submarine Cables 1919

Group K - General Systems
K1
Electric Lighting 1932, 1937
K2 
Lifts Don't have it yet!
K3 
Heating Systems Don't have it yet!
K4 
Pneumatic Tube Systems 1919 
K5 
Gas and Petrol Engines 1935 

Group L - Safety
L1 
"Safety First" for P.O. Engineering Workers Don't have it yet!

 

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