Antique radios, Old Time Radios
E1457
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Country:
Great Britain (UK)
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| Identical to |
E1457
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| Similar
Tubes |
Normally replaceable-slightly different:
ACT22
; CV1736
; CV257
Other characteristic (electr. data):
CV6055
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| Was used by |
Radar |
| Filament |
Vf 6.3 Volts / If 4 Ampere / Indirect |
| Description |
f<1200MHz, Va<600, Gm=20
High power UHF triode, designed by Bell at Hirst Research Centre of GEC. First introduced in November 1943. It originated two variants, the CW type CV257 and the CV1736, tested for pulse operation. Later it originated the ACT22 proposed as UHF TV transmitter.. The tube was a large disc seal triode, 5 - 10 kw at 3GHz
Info by 'A Scientist's War', the war diary of Sir Clifford Paterson.
The Marconi Osram experimental type E1457 listed in "The Saga of Marconi Osram Valve" is different.
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| Information source |
Babani, International Radio Tube Encyclopaedia p. 200 & 201
The Saga of Marconi Osram Valve p. 340
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