Wireless Set No. 38 AFV was a version developed for fitting in AFV's. It was powered
by 12V and normally used in conjunction with a No. 19 Set to link the Infantry No.
38 Set to a No. 19 Set net.
The set comprised two units: Wireless Set No. 38 AFV and Power Supply and LF Amplifier
Unit No. 1, both normally mounted on top of the No. 19 Set.
Operation of the No. 38 AFV Set was by the standard No. 19 Set headgear assembly
via Control Units No. 16 and No. 17.
Wireless Set No. 38 AFV was principally a Wireless Set No. 38 Mk.II*, modified and
operated by a relay.
PSU and LF Amplifier Unit No. 1 provided LT and HT to the No. 38 AFV and amplified
its audio output.