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M64

Country:  Netherlands      Brand:  Radio-Record - Röhrenmarke; Holland 
  Tube type:  Triode, vacuum   Power/Output 
  Ca. 1925 up to 1945 rare.
Tube ID = 14479
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Identical to M64
Similar Tubes Normally replaceable-slightly different:
 C405; P430
Base Europe 4-Pin (A, 4A, B4, since 1914)
Filament Vf 4 Volts / If: 0.3 Ampere / -: Direct / -: Battery = /
Description Va=200 at Ia=25mA and -Vg=27, Gm=3 with amp factor=5 and Rint=3000. Modulator application. (Radio-Expres 1930) 
Literature Taschenbuch zum Röhren-Codex 1948/49   
Radio-Expres, Netherlands   
- - Manufacturers Literature

m64_sock.png
M64: Tabu Röhren-Codex, 1948
Anonymous 15 Collector
 
m64.png
M64: own collection
Peter den Boer
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