Antique radios, Old Time Radios
4CX250F
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| Tube type: |
Transmitting Tetrode, air cooled |
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| Identical to |
4CX250F
= QEL2/275H
= 7204
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| Similar
Tubes |
Other class quality (otherwise equal):
8621
Heater different:
4CX250B
; QV2-250C
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| Base |
SPECIAL TUBEBASE in general
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| Filament |
Vf 26.5 Volts / If 0.56 Ampere / Indirect |
| Weight |
120 g / 4.23 oz |
| Information source |
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4CX250F: ARRL Handbook 1972
Anonymous 10 Collector
More ...
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4CX250F: Manufacturer's Literature
Emilio Ciardiello
More ...
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Collection of
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