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VT90 MICROPUP VALVE, 1939
The VT90 was the original 'Micropup' developed by the Marconi Osram Valve Company in 1939, operating 200 MHz and used in early airborne Radar. It was used in early Marks of AI and ASV radar.
Your comments:
- I bought a Canadian surplus radar transmitter in the 1960's which used two of these, attached to two silver plated tuned lines, through which the air supply flowed.
.......... Jack Alley , Calais, Maine, 11th of May 2013
- I have a large quantity of these valves NOS made by Northern Electric marked VT90 CV1090
.......... David Boardman www.dbtubes.com, Quebec, 14th of November 2010
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