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7A7E Info
Country:  United States of America (USA)      Brand:  Philco, Philadelphia Stg. Batt. Co.; USA 
  Tube type:  PENTODE   RF/IF-Stage   Controlling (mu) 
Tube ID = 25405
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Identical to 7A7E = 7A7
First Source (s) 09.Dec.1938 : -- Collector info (Sammler)

Base Loctal-8, B8G (Sylvania, 1938)
Was used by Radio/TV-reception etc.
Filament -: Indirect / -: Parallel / series AC/DC / If: 0.3 Ampere / Vf 6.3 Volts /
Description at Philco only 
Text in other languages (may differ)
Literature

7a7e_top.jpg
From my collection
Júlio Branco

 
7a7e_so.png
ARRL Handbook 1972
Michael Schlör

 
Usage in Models   1= 1946 ;
Number of Models with this tube   1
No further Information for

7A7E    

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