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4Y25

Information - Help 
ID = 12356
       
Country:
France
Brand: Mazda (tubes), Mazda-Belvu, Compagnie des Lampes; Paris
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 / Parallel, (AC/DC)
Dimensions (WHD)
incl. pins / tip
x 146 x 50 mm / x 5.75 x 1.97 inch
Literature Taschenbuch zum Röhren-Codex 1948/49   
  4y25.png
  4Y25: Internet
Miguel Angel Trujillo-Rodriguez
 
4y25_48rm434s.jpg
4Y25: Collection JR
Jacob Roschy

 
4y25_so.png
4Y25: ARRL Handbook 1972
Michael Schlör

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


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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