Thread: Rca trk-12
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Old 06-21-2011, 09:58 PM
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relaximus relaximus is offline
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Quote:
Originally Posted by tubesrule View Post
... The 12AP4 uses an early 6 pin base with no key, just two large pins and four small ones. The filament is on pins 1 and 6 which are the large pins.
Thanks again Darryl! That's what I needed to know.

Dave
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