Antique radios, Old Time Radios
RK20A
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Country:
United States of America (USA)
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| Identical to |
RK20A
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| Similar
Tubes |
Normally replaceable-slightly different:
RK20
Different maximum ratings:
CV1081
; VT81
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Successor Tubes
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RK47
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| Base |
UY-Base, 5 Pins (USA, April 1927) (Codex=Hr)
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| Filament |
Vf 7.5 Volts / If 3.2 Ampere / Direct |
| Description |
40 W plate dissipation; 30 MHz full ratings, up to 60 MHz with reduced ratings. Thoriated tungsten filament.
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| Information source |
Taschenbuch zum Röhren-Codex 1948/49
- - Manufacturers Literature
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RK20A: ARRL Handbook 1972
Anonymous 10 Collector
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Just Qvigstad
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RK20A: Manufacturer's Literature
Emilio Ciardiello
More ...
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