Bought this 1 year ago for 200. Listen on 75 & 40.the 10-30 MHz band has some pulses but no apparent sigs. I sprayed the bandswitch and pots,little change .per the boat anchor forum I replaced the 6C4 osc tube,no change. Any thoughts? Maybe looking for a repair person in northern Ohio.Thanks,ray-swl'er and former WD8CYX general.