PYE Museum Homepage The Story of Pye
1896 to
The history of the Pye Group of Companies in scientific & analytical instruments, radio & line communications, broadcasting, domestic radio & TV and industrial electronics from 1896 to the present day
The virtual museum of the Pye History Trust - Celebrating Britain’s Scientific & Industrial Heritage
General Product Information
Company Product Definitions
Description Definition
"Standard Products" Self contained products, designed for use in the majority of world regions.
Listed in the the internal "Equipment Code Manual" and in the international sales catalogues.
Normally would comply with international regulations and type approval specifications.
"Custom Products" Contract-specific products designed or modified for a particular customer or project.
Usually low-volume, but sometimes became the subject of repeat orders or wider application.
Did not usually appear in the Code Manual or international sales catalogues.
"Systems Elements" Equipments designed to operate with other components to make up a complete radio system.
These items may or may not be self contained products, and may or may not be capable of operating on their own.
Some items were listed in the Code Manual.
"Local-for-Local Products" Products designed and produced by, or for sale in, a particular county or region only.
These products may or may not comply with the main international type approval specifications, and were not usually listed in the international sales catalogues.
Not listed in the Code Manual.


Product Frequency Band Codes
Description Definition
Pye Telecom
(From 1946 to about 1953)
No formal designation for radio frequency bands other than "HF and VHF"
Pye Telecom
(From 1953 to about 1957)
A:   60 - 80 Mc/s
B:   80 - 100Mc/s
C:   100 - 125 Mc/s
D:   125 - 156 Mc/s
E:   156 - 185 Mc/s
F:   115 - 140 Mc/s (civil aviation)
Pye Telecom/Philips Telecom/Simoco
(From about 1957 to the present day)
Revision of alpha or alpha-numeric designations to form standard codes in descending order from the highest frequency band in use at the time, which was 148 - 174 Mc/s.
Subsequently amended to include UHF and other frequency bands.

Standard Codes - Sheet 1 - (as a jpg image)
Standard Codes - Sheet 2 - (as a jpg image)


Product Code Structures
Description Definition
Pye Telecom The fixed and variable sales parameters of each standard Pye Telecom product were characterised by a 17 digit alpha-numeric code, listed in the "Equipment Code Manual". These codes were used to specify and validate sales orders, and also to track the variant sales history via the PTL mainframe computer data base.
Philips RCS/Philips Telecom/Simoco After 1986 the Philips 12NC system was gradually added as the top level product variant identifier, and the Pye 17 digit code also used for detailed sales variations. The FM1100 was the first major product implemented in this way. This system gradually became untidy with some of the later and more complex products.
Local-for-Local These products did not always follow the official code structure, also documentation was limited and held in the originating country. From 1986 onwards these products gradually had a Philips 12NC code number.


Product History Files Available
Description Definition
Wireless Sets No. 19 Wireless Sets No. 19 (WS19) was a mobile transmitter-receiver designed by Pye Ltd in Cambridge to provide radio communications for Armoured Fighting Vehicles (AFV) in the British Army.
Wireless Set No. 62 Wireless Set No. 62 (WS62) was a general purpose, low-power, semi-tropicalised, vehicle station transmitter & receiver designed for short-range use in the high-frequency (HF) radio bands by the British Army during the Second World War.
Wireless Set No. 22  
Wireless Set No. 18  
Wireless Set C12 Wireless Set C12 was a post World War 2 mobile HF transmitter-receiver designed by Pye Ltd in Cambridge to replace the ‘A’ set and intercom functions provided by the war-time Wireless Sets No. 19.
Communications Receiver Type PCR/PCR1/PCR2/PCR3  
Transmitter Outfit Type 619 & Receiver CAT  
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