Hallicrafters S-20R

[bob91343]

I have inspected and scrubbed the bandswitch and think it's okay. Further, if the switch were damaged I would expect it not to connect the coils but it's doing that.

I guess I need to check for resonance and find out why it's not happening. The rf coils are such fine wire that I wouldn't expect it to damage the switch; the one for band 1 is 38 AWG, almost fine enough to burn out from current from an Ohmmeter. And I don't think the problem is in the primary of the RF coils; I feel the secondary is where my difficulty lies. I may try to pull the rf tube and send signal into where its plate connects to see if I can get energy transfer. Oh where is Bill Halligan when we need him? Did you know he started Radio Shack?