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RK47

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ID = 11930
       
Country:
United States of America (USA)
Brand: Raytheon Mfg. Co.; Cambridge, MA
Tube type:  Transmitting Tube, Pentode, air cooled 
Identical to RK47
Predecessor Tubes RK20A  

Base UY-Base, 5 Pins (USA, April 1927) (Codex=Hrb) Top contact with a cap.
Filament Vf 10 Volts / If 3.25 Ampere / Direct
Description Beam type aligned grid tetrode capable of 50W plate dissipation. Full ratings operation up to 30MHz; operation up to 60MHz possible with plate voltage not exceeding 900V.
Beam version of RK20A. 
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   
Tube Lore (I)

rk47_so.png RK47: ARRL Handbook 1972
Anonymous 10 Collector


Just Qvigstad
rk47.png
RK47: Handbook Raytheon amateur tubes
Miguel Angel Trujillo-Rodriguez

More ...
Usage in Models 2= 1937

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2
 

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