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Old 05-10-2023, 10:34 AM
dieseljeep dieseljeep is offline
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Quote:
Originally Posted by fumplet View Post
looking for ceiling fan run caps but wow stores dont seem to sell them locally. Thought for sure Id drum one up quickly.
Fixed miswire of the 2Meg ohm and the 1 Meg ohm resistors off the 77 and 38 tube. Im hoping these arent 2000 and 1000 ohm and Im reading it wrong again as some of these sets meg meant K. Coming off the 77 tube screen is a 2 MEG and that goes to the screen of the 38 tube. I had the 2 MEG resistor going from plate to screen of the 77 tube. The 1 MEG resistor was also miswired. Now 1 MEG goes from screen of 77 to screen of 38 . The C bias for the 38 tube is 10.8 volts, not sure if .8 is close enough to the required 10 volts specified bias for 38 tube. Still very low output although slightly better after resistor miswire. j Also going to guess the .05 cap across the line isnt responsible for the extreme loss in volume.
The cap values are proper designation. Low volume on these sets are usually a lack of signal strength. Have the volume control set to max when tuning. antenna length should a minimum of 30 feet, 50 is better! Try adjusting the trimmer caps on the tuning condenser.
Is there any real strong stations in your area? 20 to 50 KW?
With the 38 output tube, it's only rated at .55 watts. Those sets really were never too loud!
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