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A9 Info
Country:  France      Brand:  Grammont (Fotos); Malakoff et Paris 
  Tube type:  Triode, vacuum   Universal 
Tube ID = 21624
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Identical to A9
Similar Tubes A410 (can normally be replaced - small diff'ce)  

Base Europe 4-Pin (A, 4A, B4, since 1914)
Was used by Radio/TV-reception etc.
Filament -: Direct / -: Battery = / If: 0.065 Ampere / Vf 4 Volts /
Literature Babani, International Radio Tube Encyclopaedia   

a9.jpg
CA
Christian ADAM

 
1_188.png
Telefunken Werkstattbuch
Wolfgang Bauer

 
Usage in Models   1= 1927 ;
Number of Models with this tube   1
No further Information for

A9    

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