Grunow 1191 restoration

[bandersen]

Originally Posted by Reece

That's going to be a great radio when done. The scratchiness might not be plates rubbing but dirty electrical contact between the frame and the rotor.

Bingo! A little fine sandpaper and deoxit on the frame/rotor contacts solved that problem

As for the weak gain, I found an open secondary on this RF transformer. Thankfully, that's the coil with only a few turns

I'm amazed at how many stations I can pick up with essentially no antenna other than the grid cap lead on the RF tube.

I'll carefully unwind it and note the direction and number of turns then rewind it.