[mandh]

I'm trying to trouble shot a problem in the front end of my Model 41-250 and am finding that the schematic and actual wiring don't seem to agree. The radio works well on the two broadcast and highest shortwave band but has a hum on all signals in the 2.5 to 7 Mc band. I suspect maybe an open ground when the bandswitch is in that position. Since the radio works well on three of the four bands, I can't figure out why I can not get the schematic and actual wiring to match up. I've been in electronics for over 50 years and once in a while you come up with a strange situation like this. Any suggestions.