[Hallicrafters] OA2 and OB2 regulator tubes

Stevek0jw at aol.com Stevek0jw at aol.com
Sat Sep 17 17:08:03 EDT 2005


Seems to me, in ham radio jargon, if tubes are considered  "interchangeable", 
it means one will work in place of the other.
Steve



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