[dconant]

So much information here to absorb. Not sure what to do now so I'm starting over.

Turned radio on this morning with poor reception with outdoor antenna and ground attached. AVC is at -2.2 volts. Removed the ground wire and reattached. Good reception now. Tuned to 1180kc (strong local station) with AVC at -3.5 volts. Tuned to dead spot on dial and get -2.2 AVC volts. Now back to 1180 with good reception. Played for about one hour. Lightly coupled sig gen set to 1180 at 8mv. AVC is cycling between -2.2 and -2.4 volts. I hear the tone cycling as well. Is this because mixing with the 1180 station. Don't forget reception does not go away completely it just weaker. I have to turn the volume up quite a bit to hear the station.

Tuned radio and sig gen to 1100kc 8mv (no station there) and get -2.3 AVC with sig gen lightly coupled. Next I set sig gen 160mv and that gives me the -3.5 AVC the same as what I get on 1180 with good reception.

Shouldn't I be testing with sig gen giving me -3.5 AVC like good reception on 1180kc? Maybe should set sig gen lower if I direct couple to antenna and or IF.

Voltage measurements on 6A8 with no antenna or ground using a VTVM.
Grid cap -2.2
Pin 3 235 volts
Pin 4 95 volts
Pin 5 -13 volts
Pin 6 200 volts.

6K7 tube
Grid cap -2.2 volts
Pin 3 235 volts
Pin 4 95 volts
Pin 5 0 volts

6H6 tube
Pin 3 -2.3 volts
Pin 4 -1.8 volts
Pin 5 -2.3 volts
Pin 8 -1.8 volts