[Hammarlund] SP-600 and drift--

[bavarianradio at comcast.net]

I find that my L.O. stays put OK, but the BFO drifts like crazy, Chuck's probably right,I should open the BFO can and do some maintenance... Ross

----- Original Message -----
A couple of people have mentioned drift in the SP-600.Let me assure you that an SP-600 in proper operation condition has about zero drift. I have a late model one with the ceramic capacitors, and when I turn in on each night to listen to the chatter on 3.875 it is right where I left it the night before. Maybe a very slight tweak to zero beat, and nothing after that.My suspicions about those sets that drift are that they are probably suffering from capacitor / resistor disease, or from crappy replacement capacitors, or maybe the tuning capacitor has a bit too much wear, and "wanders" a bit as it is heated, or maybe the local oscillator tube needs changing.Given the spread of time and usage of these receivers, anything is possible. I feel fortunate to have such a nice radio!Chuck N1LNH 		 	   		  
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