Manufactured by the British THORN ELECTRICAL INDUSTRIES and adopted by many European and USA Air Forces.
This Little Transceiver was used extensively during the Korea and Vietnam wars.
Dual channel, VHF/UHF SAR rescue radio receiver/transmitter, Xtal controlled 121,5 / 243 MHz. 35mW RF output power, 10uV sensitivity. AM/MCV emission.

TM11-510 technical manual. (https://archive.org/details/TM11-605)
British made units (mfr. Thorn Electrical Industries) use Hivac subminiature tubes, XFR2, XFR2, XR4.


Listening to Aircraft Radio and aerial emergency CH.

This Radio is in working order and needs only a new battery ( Requires BA-1264 battery pack )