Description
This section shows a rare set of Admiralty Navy Transmitting and receiving valves.
The MT5B is an air cooled transmitting triode dated 1919. To make such a valve, air was sucked at side of valve and next where anode is placed!
NR14: Navy Receiving :two valves of same type with slightly different shape . Both are Admiralty valves. We can easily notice one valve has vertical and other horizontal anodes.
NT10 Navy Transmitting is a fat large for its size valve mounting horizontal anode .
All four valves have good filaments.
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