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4Y25

Information - Help 
ID = 12356
       
Country:
France
Brand: Mazda (tubes), Mazda-Belvu, Compagnie des Lampes; Paris
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  Beam Power Tube   Power/Output 
Identical to 4Y25 = ATS25N
Similar Tubes
Normally replaceable-slightly different:
  4Y25N ; 807

Base UY-Base, 5 Pins (USA, April 1927) Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Vf 6.3 Volts / If 0.9 Ampere / Indirect / Specified voltage AC/DC
Dimensions (WHD)
incl. pins / tip
x 146 x 53 mm / x 5.75 x 2.09 inch
Weight 67 g / 2.36 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 429, p. 948 & 949
  4y25.png
  4Y25: Internet
Miguel Angel Trujillo-Rodriguez
 
4y25_49rm434s.jpg
4Y25: Collection JR
Jacob Roschy

More ...
 
4y25_so.png
4Y25: ARRL Handbook 1972
Anonymous 10 Collector

 
4y25cataloguemazda1960doc.png
4Y25: Catalogue Mazda 1960
Patrice Zeissloff


from Just Qvigstad

Usage in Models 1= 1949??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1


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