You are probably better off zero-beating to WWV. You should easily be able to get within 500mHz or less.
73, Matt VK2RQ > On 12 Apr 2014, at 6:39 am, Edward R Cole <[email protected]> wrote: > > It was suggested I do the Temp Compensation Procedure. Unfortunately I do > not have a stable 50-MHz signal source. However I did run the Reference > Frequency Calibration using my XG3. Call this "Part Two": > > I sampled the RF output of the XG3 with my counter and also input that to the > KX3 for the Calib. This required running at 0 dBm to inject strong enough > signal for the counter (approx -3 dBm). I turned on the ATT for the KX3 to > keep input from overdriving. Got about S9 signal level. > > I got it adjusted to within about 2-Hz. The XG3 drifts approx +/- 2 Hz so > difficult to set the Ref*Frequency using it. But that eliminated most of the > 38 Hz offset I saw last night. Running the Tx at 5w afterward drift was in > the range of 0 to +7 Hz for a 50-second key down run. The drift is not > steady in one direction so average error is probably in the neighborhood of > +5 Hz with 5-Hz uncertainty in the measurement. Crude but gives a ballpark > idea what to expect. > > Today's measurements were all with new heat sink installed. Temp Comp. > probably would lower these numbers a bit. > > I might try running my K3 as signal source for Temp Comp. if it holds more > stable then the XG3 at 50-MHz. I am using the EXREF so it may be better? > > 73, Ed - KL7UW > http://www.kl7uw.com > "Kits made by KL7UW" > Dubus Mag business: > [email protected] > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
