In Reply to: B & K model 500 tube tester posted by mr9iron on February 26, 2016 at 20:11:30:
On mine, It will test 12ax7's but you cannot go by the good/bad zones. A good 12ax7 will read at least 1200 on the transconductance scale. The gain settings are 95 for each triode. 1200 is still underneath the "bad" section of the scale.
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Follow Ups
- RE: B & K model 500 tube tester - GRH 09:41:18 02/29/16 (2)
- RE: B & K model 500 tube tester - mr9iron 10:03:07 02/29/16 (1)
- RE: B & K model 500 calibration - M3 lover 10:56:10 02/29/16 (0)