fitted to Types 35 and 36. The primary use of the transmitter is:-
to dry out the deck insulator if
weather conditions are such that the Valve set will not oscillate
[b] as a stand-by transmitter in the event of a complete breakdown
of the Valves or essential components of the Valve set. Uses quenched
spark gap system.
Range with a Type 35 is 150 miles and with a Type 36, 250 miles.