Additional information in the Wikipedia article about the British Clansman military radio system:
https://en.wikipedia.org/wiki/Clansman_(military_radio)#UK/PRC_316
https://en.wikipedia.org/wiki/Clansman_(military_radio)#UK/PRC_316
QuoteClansman HF radio sets
UK/PRC 316
A late introduction to the Larkspur range, its original designation was A16 Lightweight HF Radio Station. Deployed in tropical or high temperature climates, it was powered by either a standard 12V battery that connected directly to the set or if issued, a Leclanche Battery that connected directly to the set. It was compatible with most D10 or R4 copper stranded antenna systems that were fielded at that time, examples being the Shirley, Jamaica, Half Jamaica and Yagi.
Despite not being of the Clansman family, its late introduction to service coupled with its Clansman equivalent, the PRC/RT320 not being ready, meant the PRC 316 survived for just over five years after Clansman was introduced. Once the PRC/RT320 was completed and fully fielded, the PRC 316 was rapidly withdrawn. Another reason cited for its retention was that it was relatively easy to operate and was inter-operable with the other HF Radios in the Clansman family.