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In Reply to: Question on JJ 2A3-40 vs JJ 300B posted by drlowmu on March 30, 2015 at 11:20:10:
I have some JJ 300B's on the bench now. They have four "inverted v's" for a filament. Each V is hung from the center with a spring for tension. These may be several years old. I'm not sure if they are the current version or not.
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Follow Ups
- RE: Question on JJ 2A3-40 vs JJ 300B - Alpha Al 15:07:09 03/30/15 (3)
- RE: Question on JJ 2A3-40 vs JJ 300B - Tre' 08:17:48 03/31/15 (0)
- RE: Question on JJ 2A3-40 vs JJ 300B - drlowmu 15:14:32 03/30/15 (1)
- RE: Question on JJ 2A3-40 vs JJ 300B - vinnie2 03:31:12 03/31/15 (0)