11-11-2024, 05:20 PM
Yes, 60v drop on the fc is normal. 660 ohm field coil with about 110-120 ma is 60-70 volts. What we should look for is a reason B+ is below what it should be. It may be a normal thing for this radio but it should be looked at.
Check the grid cap voltage of the 6K7 IF tube, should get a few volts negative and a few more when a station is tuned in. This would be the AVC working. It's also possible that if it is very negative then it will cut off the tube gain and result in low volume.
Check the grid cap voltage of the 6K7 IF tube, should get a few volts negative and a few more when a station is tuned in. This would be the AVC working. It's also possible that if it is very negative then it will cut off the tube gain and result in low volume.
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