[hsusmann]

Sometimes if you have a dirty band switch you will only hear one or two stations because there is so much attenuation somewhere in the circuit that you only hear the really really strong ones.

I find that you can identify a dirty band switch by rocking it back and forth while listening and if it's dirty you will hear crackling and a noticeable change in volume levels as you make/break whatever bad contact is in there.

Can you monitor the front end grid voltages with a DVM as you rock the band switch back and forth? You might be able to detect a bad contact by monitoring the AVC voltage at the grids. If it's jumping around you may have a dirty switch. A conventional analog volt meter is best for this, not a DVM necessarily.

My 2 cents for what it's worth also!

Herb S.