[Kenradio]

Hello everyone, I have a Philco 37-650B that has a very odd problem. When I got it from Ebay I had to first replace the shadowmeter that was missing (I had a spare from a junked 37-650 chassis) then rebuild the capacitor blocks/replace paper caps and replace any resistors out of tolerance. When I fired it up it would work but sensitivity was weak and there was no deflection of the shadowmeter (the meter is good). I was using a 30' piece of wire for the antenna for my testing. If I connected the wire to the grid cap of the 6K7 RF tube the signal was much stronger but then the signal dropped off a few seconds after connecting the antenna (I checked the RF and Ant. coils and all are good). It gets much weirder--when the antenna is connected to the proper terminals the stations are still weak but goes to full sensitivity if you turn the power on/off quickly but as soon as you move off the station the sensitivity drops again!!! The oscillator section is good as the stations are right on frequency. I connected the radio to my outdoor 110' antenna and it pulls in many stations and the radio is extremely loud at low volume with occasional dropouts in sensitivity---It sounds like possibly an AVC issue and I replaced all components on the AVC bus but it still doesn't work like it should. I did sub the 6A8 & 6K7 tubes in the RF deck just in case but no change. I collect and restore Philcos--I have a 37-610B, 37-9, (2) 38-643B, 37-84 & model 16B in my collection but this 37-650 is driving me crazy. Any suggestions are greatly appreciated. Ken