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RK25

Information - Help 
ID = 11619
       
Country:
United States of America (USA)
Brand: Raytheon Mfg. Co.; Cambridge, MA
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  Transmitting Tube, Pentode, air cooled   Power/Output 
Identical to RK25
Similar Tubes
Normally replaceable-slightly different:
  802
Other class quality (otherwise equal):
  CV622 ; RK25B
Heater different:
  RK23 ; RK45

Base 7-Pin-Base U7B = medium, old, USA (Codex=Mc) Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Vf 6.3 Volts / If 0.9 Ampere / Indirect / Specified voltage AC/DC
Description

Isolantite base. Up to 30 MHz full ratings.
Suppressor grid wired to the base.

 
Dimensions (WHD)
incl. pins / tip
x 150 x 52 mm / x 5.91 x 2.05 inch
Tube prices 2 Tube prices (visible for members only)
Information source Tube Lore (II)   p. 219
- - Manufacturers Literature   
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
  rk25_use1.png
  RK25: ARRL The Radio Amateur's Handbook 1936
Götz Linss † 27.06.21
 
rk25_01.jpg
RK25: Own collection
Valery Gromov

More ...
 
rk25_so.png
RK25: ARRL Handbook 1972
Anonymous 10 Collector

 
rk232525b_1.png
RK25: Handbook Raytheon amateur tubes
Miguel Angel Trujillo-Rodriguez

More ...

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