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In Reply to: RE: Raytheon BP 12BH7A posted by pc123v on March 29, 2015 at 05:16:09:
12BH7A is interchangeable with the 12BH7. The "A" version has a controlled heater warm-up. Useful in stringed-series heater circuits. This feature doesn't effect a circuit designed to use the 12BH7.
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Follow Ups
- RE: Raytheon BP 12BH7A - FenderLover 08:22:31 03/29/15 (1)
- RE: Raytheon BP 12BH7A - pc123v 05:37:36 03/31/15 (0)