09-24-2017, 02:17 PM
Hey Folks -
So i got the radio subchassis put back together and have been testing the last month as I have had time. The volume is not strong - but I am picking up stations across all 5 bands. because the volume is weak, I have testing all the usual things- the 2 = 6L6G tubes are good and strong (nos from Bob Dobush) I have a replacement output transfromer - hammond 125 e using pins 4 and 6 for the secondary. I have a new rebuilt input transformer. I have check all the other tubes including the 6J5 driver and all check good - no shorts or any other issues. I also did an alignment of the broadcast band since i thought that could be impacting volume - but still not "booming" like it should be. I have checked the caps and resistors around the 6L6 tubes and driver tubes and they check good (particuarily resistors 134 and 135) I have noticed that the volume starts out louder and then once the tubes warm up its get lower. I am at a loss for what the issue could be at this point and it does not seem to be the obvious things. Really need some help on figuring out what the cause of the low volume is. -- Andy
So i got the radio subchassis put back together and have been testing the last month as I have had time. The volume is not strong - but I am picking up stations across all 5 bands. because the volume is weak, I have testing all the usual things- the 2 = 6L6G tubes are good and strong (nos from Bob Dobush) I have a replacement output transfromer - hammond 125 e using pins 4 and 6 for the secondary. I have a new rebuilt input transformer. I have check all the other tubes including the 6J5 driver and all check good - no shorts or any other issues. I also did an alignment of the broadcast band since i thought that could be impacting volume - but still not "booming" like it should be. I have checked the caps and resistors around the 6L6 tubes and driver tubes and they check good (particuarily resistors 134 and 135) I have noticed that the volume starts out louder and then once the tubes warm up its get lower. I am at a loss for what the issue could be at this point and it does not seem to be the obvious things. Really need some help on figuring out what the cause of the low volume is. -- Andy
Andy Sorrell
Palmyra, Virginia