Antique radios, Old Time Radios
RK48
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Country:
United States of America (USA)
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| Identical to |
RK48
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| Base |
(Codex=Hrb)
Top contact with a cap.
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| Filament |
Vf 10 Volts / If 5 Ampere / Direct |
| Description |
Beam power transmitting tube. 100W anode dissipation; 30 MHz full ratings operation; up to 60 MHz with anode voltage not exceeding 1500V. Thoriated tingsten filament, molybdenum plate; hard-glass bulb with Jumbo 5 pin ceramic bayonet base.
Sibley gives RK48 as equivalent to 4E27 and HK257B, but there are several differences, including power, frequency and basing.
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| Information source |
Taschenbuch zum Röhren-Codex 1948/49
- - Manufacturers Literature
Tube Lore (I)
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RK48: ARRL Handbook 1972
Anonymous 10 Collector
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RK48: Handbook Raytheon amateur tubes
Miguel Angel Trujillo-Rodriguez
More ...
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