FS-5000 SPY RADIO (Harpoon)
This is a "stay behind" radio with a crypto component to it. Nearly all of them are missing the control unit with crypto (DSU). Such is the case for the example below.For an excellent description of the FS-5000 and more photos, please visit the Cryptomuseum web page. The name of the complete system was SY-5000.
The DSU plugs into this corner. Each radio came with a tool set such as this. Photos courtesy Warren Brader, Director Combat Communications and Surveillance Museum. Contributors and Credits:
1) Paul Reuvers Crypto Museum http://http://www.cryptomuseum.com/
2) The Combat Communications and Surveillance Museum no longer exists.
Apr 23/12