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12A8

Information - Help 
ID = 3584
       
 
   
Tube type:  Pentagrid-Converter (Heptode)   Pentagrid (old)   Controlling (mu) 
Identical to 12A8
Similar Tubes
Normally replaceable-slightly different:
  12A8G ; 12A8GT

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Ue) Top contact with a cap
Was used by Radio/TV-reception etc.
Filament Vf 12.6 Volts / If 0.15 Ampere / Indirect
Description

There is no metal tube 12A8, see under 12A8G or 12A8GT

 
Text in other languages (may differ)
Tube prices 1 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   
  12a8.png
  12A8: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
 
12a8_so.png
12A8: ARRL Handbook 1972
Michael Schlör

 

Usage in Models 1= 1938? ; 7= 1939?? ; 3= 1939? ; 14= 1939 ; 3= 1940?? ; 8= 1940? ; 11= 1940 ; 3= 1941? ; 3= 1941 ; 2= 1942? ; 2= 1942 ; 1= 1945?? ; 1= 1945? ; 3= 1946?? ; 3= 1946 ; 1= 1948?? ; 2= 1948? ; 3= 1948 ; 1= 1949?? ; 1= 1949? ; 5= 1950??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):78

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