Antique radios, Old Time Radios
RK52
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Country:
United States of America (USA)
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| Identical to |
RK52
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| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Br)
Top contact with a cap.
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| Filament |
Vf 7.5 Volts / If 3.75 Ampere / Direct |
| Description |
Carbon plate, hard glass bulb, ceramic base. 62.5W anode dissipation; full ratings operation up to 60MHz.
Similar to RK51, with mu raised to 150 for zero-bias operation.
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| Information source |
Taschenbuch zum Röhren-Codex 1948/49
- - Manufacturers Literature
Tube Lore (I)
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RK52: ARRL Handbook 1972
Anonymous 10 Collector
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Just Qvigstad
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RK52: Handbook Raytheon amateur tubes
Miguel Angel Trujillo-Rodriguez
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