Not nearly good enough for JT65b on 144 MHz. Have you done the temperature compensation?
I use my KX3 on 144 MHz but the difference is I am using a transverter with an IF of 14 MHz where the drift is proportionally less to start with and the external transverter has a very high stability TCXO fitted ( the original TCXO in the transverter was not good enough I found). 73 from David GM4JJJ > On 24 Feb 2016, at 23:25, Doug Millar via Elecraft <elecraft@mailman.qth.net> > wrote: > > Hello again, > I did a couple of runs on the Kx3 with 50 seconds on TX and then reading > the frequency drift at 144.000MHz. Here is what I found out. My question is > whether it is good enough for JT mode on that frequency. Let me also sat that > the stability at the HF bands is very good. This is for 2meters. > > • Usingthe audio counter as a reference• Itransmitted for 50 seconds > and recorded the drift over the next two minutes. • Between10 and > 50seconds it drifted 60hz on rx• After50sec. the drift went to less than > 1hz/sec. tapering off to little or no driftafter 1min 10sec. • Thiswas > done in ambient air at about 23deg C. Testing done at 2w and .5w and tests > at 12 and 14v input voltage showed no effect on drift. > I would be curious what others have found. > Doug K6JEY > Dr.Doug Millar EdD. > K6JEY > drzarko...@yahoo.com > 562 810 3989 cell/text > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to gm4...@yahoo.co.uk ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
