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50-925 no FM
04-01-2015, 09:49 PM
Sorry to hear your HP died nice piece of gear. As mentioned the 12BA6 is the RF amp for the FM only. AM has no RF amp. Double check the the plate, screen, and cathode voltages at the 12BA6. Also do you have 135vdc at the cathode of the rectifier and the junction of the input filter condenser to B-?( across the input condenser)
Terry
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Messages In This Thread
50-925 no FM - by Eric Adams - 03-31-2015, 09:28 PM
RE: 50-925 no FM - by Radioroslyn - 04-01-2015, 05:38 AM
RE: 50-925 no FM - by Eric Adams - 04-01-2015, 10:10 AM
RE: 50-925 no FM - by Radioroslyn - 04-01-2015, 08:01 PM
RE: 50-925 no FM - by David - 04-01-2015, 08:10 PM
RE: 50-925 no FM - by Eric Adams - 04-01-2015, 08:42 PM
RE: 50-925 no FM - by Radioroslyn - 04-01-2015, 09:49 PM
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