British Admiralty Transmitting Tubes
british_admiralty_tx_valves1.jpg
A table of tubes. From  "Saga of the Vacuum Tube". Download image to enlarge. .(Provided by Lewis Bodkin)
british_admiralty_tx_valves2.jpg
 Envelope profile for just two of the types. From  "Saga of the Vacuum Tube". Download image to enlarge. (Provided by Lewis Bodkin)
 
 

Contributors and Credits:

1) ) Lewis Bodkin  <05bodkin555(at)gmail.com>
2)  "Saga of the Vacuum Tube"

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Mar 6/19