Phil Hystad-3 wrote: > > OK, how do I find out if I need this mod? I have witnessed two different > frequency shift problems, one of them I have posted here and there has > been some discussion about it. > > Problem #1 (posted before) -- when listening to CW, when the signal is > reasonably strong such as S9 or better, if there is a slight pause in the > sending there is sometimes a frequency shift on the order of 10 Hz to 40 > Hz. I am guessing at the actual shift amount as it is a slight but very > apparent shift in tone. > > > Problem #2: on a couple of occasions while operating PSK, there has been > a slight shift in frequency, enough that my software is no longer tracking > the signal (I use CocoaModem). I am not sure how much a shift would need > to be for CocoaModem to lose sync but it does lose sync. This has > happened a few times. At first, I thought it was the other guy hitting > his VFO or maybe some old tube rig that is has an unstable VFO but the > last two times it happened I am pretty sure that it was me (and, my hands > are no where near the VFO knob). > > > By the way, as far as I know, in neither case above, does the VFO > frequency readout change value. For PSK, I keep my VFO pegged on > 14070.150 Hz and I think I would notice if this changed. >
Neither problem. This mod applies to a chirp in your transmitted signal, usually when operating split. It does not apply to received signals. 73, Bill -- View this message in context: http://elecraft.365791.n2.nabble.com/New-K3-app-note-issued-tp5110930p5111248.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ 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
