During and after WWII, the UK was one of the main developers and suppliers
of spy radio sets
and receivers. During WWII, a wide range of suitcase and
special forces radios were developed and many of these were dropped over
occupied Europe. Some of them were dropped together with a (secret) agent,
but others were dropped-off at night for use by resistance groups.
During the Cold War, development and production of suitable radio sets
for agents and stay-behind organisations
(also known as Gladio)
continued. Initially these radios were all valve based (tubes), but as
soon as transistors became widely available, a range of (partly)
transistorised radio sets were developed.
Some of these are listed below. Click any of the images for further