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Ever since the invention of radio, people have been trying to use
transmitters and receivers for secret communiation. In times of war,
spies, agents and resistance people would use such secret communication
to contact their home office or government and pass important messages.
Such secret communication systems are often called Spy Radio Sets,
or Spy Sets for short.
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We are well aware, that the term Spy Sets is not always correct.
The equipment described here was also used by secret agents, special
forces, embassies, resistance groups, stay-behind organisations and
others. However, as it has become a popular expression over the years,
we will call it Spy Sets.
Please note that we are not trying to give a complete overview of all
spy radio sets that have ever been used in the world. Only the sets that
we have in our own collection, or that we've been able to research
extensively, are highlighted here. That said, we do show a rather
representative cross-section of the many different spy radios out there,
and we try to give as much background information as possible.
For a complete list of spy sets covered on this website, check
our index, follow any of the links below or use the navigation
buttons on the left.
 Index of spy sets
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If you can provide additional information on certain items, please
not not hestitate to contact us. It you have any surplus documentation
or equipment, please check our wanted page or
contact us directly. We are always intersted in expanding the
collection.
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Other clandestine equipment
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Please note that this part of the website only deals with transmitters and
receivers used for clandestine operations, commonly called spy radios.
In reality however, many other electronic devices have been used in clandestine
warfare, such as equipment used for tracking down enemy transmitters
(direction finders),
intercept receivers, covert transceivers, burst encoders
and much more.
Information about these additional devices can be found elsewhere on this
website.
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