Wireless Set No. 19

19 was a Second World War mobile radio transceiver designed for use by armoured troops of the British Army.

Designed for use in tanks and armoured vehicles, the radio provided three communication channels: A rear-link tank in the HQ unit would join its A-set to a wider network, and relay relevant messages to the commander on the B set.

The commander or operator could then select the A or B sets to remove them from the IC and allow push-to-talk.

Later control boxes allowed the commander or operator to rebroadcast A onto B or vice versa for message relay.

The driver's control box incorporated a push button to activate a buzzer, allowing the commander's attention to be brought back to the IC if a situation requiring his attention arose.

19 was developed in 1940 by the British War Office's Signals Experimental Establishment and by Pye Radio.

19 Mk II was produced in Canada by Northern Electric, Canadian Marconi and RCA Victor.

[6] A majority of Canadian sets used English/Cyrillic front panel lettering, the result of a Lend-Lease contract to the Soviet Red Army.

[7] Post-war, forward area battle group radio traffic carried by Wireless Set No.

19 nets was progressively migrated to low-band VHF using a more modern generation of radios known as the New Range, later to become known as Larkspur.

19 TH (built for the Dutch Army) featured increased frequency coverage up to 12 MHz.

19 Mk III in a simplified configuration was still on issue to British cadet units as an operational training station as late as the mid-1970s.