DIY Espionage Etc

[Anonymous]

http://www.drdish.com/features/index.shtml

Some good feature stories here which will interest those interested in some of the strange signals which people intercept.

 

[uair01]

Interesting spy gadget. A cable with built in transmitters etc.
https://marginalrevolution.com/marginalrevolution/2021/09/markets-in-everything-spy-cable.html