Nigel, The way I read the instructions, yes, you would need to decrease the value of RA. The manual says not to go below 15K, so your 22k to 27k range should be in the ballpark. Let us know your results, I suspect that not many folks have done fine adjustment of the compensation amount.
73, Don W3FPR > -----Original Message----- > > I want to fine tune the temp compensation by adjusting the resistor RA, > currently at 33k and would like to confirm my thinking before starting. > My K2/100 drifts down about 50Hz after 30 minutes from turn on and > stabilizes. After a good period of transmitting which gets the > fan on high > it will drift down another 40 to 50Hz. The PLL range is 13.26kHz > > The uncompensated oscillator drifts down with a temperature increase > therefore I need to further increase the compensation. To > achieve this I > need to decrease the value of RA. Perhaps 27k or 22k? Have I got this > right? > > > 73, Nigel ZL2DF > _______________________________________________ Elecraft mailing list Post to: [email protected] 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
