Wireless set no. 19 Mark III, together with ancillary equipment, developed by Pye Limited and the Signals Research and Development Establishment, unknown maker, British, 1942-1946.
This radio equipment was introduced in 1942 for military use. The No. 19 Mark III was a development of previous military radio equipment, and was designed for use in military vehicles such as tanks. It was made up of two separate transmitter-receiver systems, and could provide intercom facilities between crew members.