Antique radios, Old Time Radios
RK22
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Country:
United States of America (USA)
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| Identical to |
RK22
= 3B23
= 38222
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| Similar
Tubes |
Heater different:
RK19
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| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bn)
2 Top contacts.
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| Filament |
Vf 2.5 Volts / If 8 Ampere / Half indirect |
| Information source |
Tube Lore (II) p. 182 & 219
Tube Lore (I)
Taschenbuch zum Röhren-Codex 1948/49
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RK22: ARRL Handbook 1972
Anonymous 10 Collector
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Just Qvigstad
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RK22: Handbook Raytheon amateur tubes
Miguel Angel Trujillo-Rodriguez
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