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Locomotion
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Locomotion
National Railway Museum
National Science and Media Museum
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Image
Has Image
3
Non-Commercial Use
3
Category
Electronic Components
3
Radio Communication
1
Object type
cathode
4
Maker
Metropolitan-Vickers Electrical Company Limited
1
Place of origin
Trafford Park
1
Trafford Park, Trafford, Greater Manchester, England, United Kingdom
1
Date
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Cathode and grid, for a demountable tetrode valve
1939
Mullard type QQZ06-40A VHF double beam tetrode
1940-1960
Mullard type QQX03-20A UHF double beam tetrode quick heat cathode (VTB)
1940-1960
1 cathode
1 cathode