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RD25A

Information - Help 
ID = 36380
       
Country:
Czechoslovakia
Brand: Tesla; Praha, Bratislava etc.
Tube type:  Triode, vacuum   Power/Output 
Identical to RD25A = P27/500
Similar Tubes
Normally replaceable-slightly different:
  PX25

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 2 Ampere / Direct
Dimensions (WHD)
incl. pins / tip
x 163 x 65 mm / x 6.42 x 2.56 inch
Information source Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 113, p. 148

b4_base_pins~~463.png RD25A: Fin Stewart
Fin Stewart


Just Qvigstad

Collection of

 
rd25a_tesla01.jpg

 

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