Making contacts on an ex-Special Forces military radio | Racal Cougar PRM-4515 radio

I head out to high ground to operate a Racal Cougar VHF radio. This radio was designed for military purposes such as special forces, the Racal Cougar was used during the Northern Ireland conflict.

PRM-4515 is a rugged portable military radio with (optional) 16 kbit/sec digital voice encryption, developed in the late 1980s by Racal Tacticom Ltd. 1 in Reading (UK) for use by Special Forces (SF) and for use in covert police operations.

The radio comes in a number of variants

PRM4515L which is a 10 channel 68-88Mhz radio with clear speech with 150hz CTCSS transmit and receive and also two selectable crypto keys A and B and a zeroise facility to dump the crypto keys

PRM4515N which is a 10 channel 68-88Mhz radio with clear speech with 150hz CTCSS transmit and receive and clear speech with carrier squelch and also two selectable crypto keys A and B and a zeroise facility to dump the crypto keys

PRM4515H which is a 10 channel 136-174Mhz radio with clear speech with 150hz CTCSS transmit and receive and also two selectable crypto keys A and B and a zeroise facility to dump the crypto keys.

PRM4515U which is a 10 channel radio in a 10Mhz band selected between 400-470Mhz with clear speech with 150hz CTCSS transmit and receive and also two selectable crypto keys A and B and a zeroise facility to dump the crypto Keys.
https://www.pmrconversion.info/cougarnet.htm
https://www.cryptomuseum.com/crypto/racal/prm4515/index.htm

Видео Making contacts on an ex-Special Forces military radio | Racal Cougar PRM-4515 radio канала M0SZT - Camping and Overlanding