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7A7E

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

Base Loctal-8, B8G (Sylvania, 1938)
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Parallel / series AC/DC
Description at Philco only 
Text in other languages (may differ)
Literature
 
7a7e_top.jpg
7A7E: From my collection
Júlio Branco

 
7a7e_so.png
7A7E: ARRL Handbook 1972
Michael Schlör

 

Usage in Models 1= 1940 ; 2= 1941 ; 1= 1946

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):4


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