[ccomer1955]

I used my AllSun socket tester to see if the socket was correctly wired, and it was. I used the Klein MM200 to test the AC voltage at the socket and at the variac, and I got within decimals of 121 at both sockets. Voltage across transformer primary with the radio power switch on was 109v and across the filament of the 80 with no tube in was 5v.

The voltage at the house mains was the same with both DMMs.