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6a7 (6a7)

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Forum » Valves / tubes - Semiconductors » VALVES AND TUBES in RADIOMUSEUM » 6a7 (6a7) To the tube
Enrico Bonisolo
 
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23.Apr.09 10:09
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6a7 (6a7) 

This soviet 6A7 is not identical to the standard worldwide known  6A7  (USA) . The usual 6A7 is also a heptode converter elctrically very close to this but very older, bigger (st shaped) AND with a different socket: it is not octal but the older late 20's - early 30's style 7 pin USA socket. This USSR tube seems to be just identical or very close to 6SA7, single ended octal heptode used in 1940. 

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