Adam, The K2 PLL Ref Upgrade manual gives some information on typical drift i.e. 5 to 20 Hz per 15 degrees F on 20 meters. It also explains how changing RA on the thermistor board can better compensate for the drift. Since your drift is consistent, I think you should be able to reduce it by adjusting RA on the thermistor board.
73 Kevin w9cf >That being said, I still do notice a temperature-dependent >frequency drift during normal usage. The drift is >predictable, with the zero beat on the dial I get with >reference to WWV drifting by as much as 70-80 Hz if the >temperature difference between ambient and the max temp the >rig hits with the KPA100 under heavy use is large. The >frequency at which I can zero-beat WWV does not change >unpredictably. The radio consistently zero-beats low (e.g. >WWV zero-beats at 10.000.07) when cold. >Adam, N1KO _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
