05-25-2026, 08:15 AM
AVC when acting up is -2.6 on 6A8 grid cap.
Stations come in weak in their correct positions when acting up.
Did not try finger on the A terminal.
Signal was injected at the antenna terminals with .5 cap in series with A term.
I will check with signal generator with antenna disconnected and see what happens.
I have no reason to doubt my antenna because just the act of removing the antenna ground and placing it back on bring the radio back. This is not enough to even wiggle the A connection. The connections are via alligator clips.
I have cleaned the tube sockets and resoldered the pins. I will clean again and tighten the sockets.
Tubes have been wiggled and poked. Tube sockets are quite tight in this radio making tube removal a little difficult.
Freeze spray has been done.
Tuning cap was also freeze sprayed.
Last thing I have done is rob the glass 6A8 from my 37-116 and that too crapped out. All other changes of the 6A8 were metal tubes. Yes pin 1 is grounded. Yes I used a tube shield and verified it was grounded.
So since the antenna is in question is there still a chance the primary of the coil proved to be good even though resistance reading are the same normal and acting up with power on. Also I used another wire for an antenna and that also caused the problem.
As for the Bluetooth question there was nothing plugged into the jack. I have even tried with the Bluetooth disconnected from the radio.
I really do appreciate you guys hanging in there.
Stations come in weak in their correct positions when acting up.
Did not try finger on the A terminal.
Signal was injected at the antenna terminals with .5 cap in series with A term.
I will check with signal generator with antenna disconnected and see what happens.
I have no reason to doubt my antenna because just the act of removing the antenna ground and placing it back on bring the radio back. This is not enough to even wiggle the A connection. The connections are via alligator clips.
I have cleaned the tube sockets and resoldered the pins. I will clean again and tighten the sockets.
Tubes have been wiggled and poked. Tube sockets are quite tight in this radio making tube removal a little difficult.
Freeze spray has been done.
Tuning cap was also freeze sprayed.
Last thing I have done is rob the glass 6A8 from my 37-116 and that too crapped out. All other changes of the 6A8 were metal tubes. Yes pin 1 is grounded. Yes I used a tube shield and verified it was grounded.
So since the antenna is in question is there still a chance the primary of the coil proved to be good even though resistance reading are the same normal and acting up with power on. Also I used another wire for an antenna and that also caused the problem.
As for the Bluetooth question there was nothing plugged into the jack. I have even tried with the Bluetooth disconnected from the radio.
I really do appreciate you guys hanging in there.




