02-27-2021, 03:38 PM
I found another post that said the grids of the 71's are measured to the filaments. I get 42VDC that way. I did manage to pick up a VERY weak station, But my concern now, I guess, is the detector voltages. I've checked everything. Tried 2 different tubes, re-checked all caps and resistors. Tube socket, grid cap. etc. etc. Nothing.