Hi, Thank you Wayne, for your fast response. Seems I'm better off to stick with my stock TCXO as I've never had much luck with method 1 and 2. My K3 was in the shop 3-4 months ago and looks like Rene set it's frequency dead on.
Happy New Year. 73 Jim, W0EM --- On Tue, 12/28/10, Wayne Burdick <[email protected]> wrote: > From: Wayne Burdick <[email protected]> > Subject: Re: [Elecraft] TCXO - 0.5PPM > To: "Jim Harris" <[email protected]> > Cc: "Elecraft Email" <[email protected]> > Date: Tuesday, December 28, 2010, 6:24 PM > 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
