At present, "method 3" remains unimplemented. Fortunately the TCXO's uncorrected drift is already less than +/- 0.5 PPM from 0 to 50 C. This was the target for "method 3".
73, Wayne N6KR On Dec 28, 2010, at 10:18 AM, Jim Harris wrote: > Hi Folks, > > Been kicking around putting the 0.5PPM TCXO in my K3. After doing > some reading a question or two arises. The instructions sheet(s) > for the TCXO mentions using method 1,2 or 3 in the K3 manual to set > frequency. The K3 manual does not have a method 3 as I can find. > I've checked the reflector archive and found there is a data input > feature in the K3 utility for inputting data received with the > TCXO. I think this equals method 3. Someone make a note to change > instructions/manuals if needed. > > My question is do I need to do a method 1 or 2 before doing the data > input? Method 1 is to use a freq counter. My freq counter is only > about +/- 10 Htz depending on variables. Method 2 is zero beat. By > ear the best I can get is about +/- 25 Htz. How close do I need to > get with method 1 or 2 (if needed) before inputting the data? > > Second question, will the 0.5PPM TCXO eliminate the hysteresis I see > during RTTY? Depending on whether I tune to a signal from low to > high or high to low I can see 10+ Htz difference in the signals > frequency. Or, are other factors at work? > > Constructive thoughts appreciated. > > Happy New Year. 73 > > Jim, W0EM > > > > ______________________________________________________________ > 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 ______________________________________________________________ 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
