Initiate similar transmissions without Winwarbler and see if the same thing happens. Bet it does not. 73 de Brian K3KO
Sent from my iPad > On Mar 13, 2017, at 8:19 PM, Chuck Chandler <[email protected]> wrote: > > Cross-posted to both DXLabs and Elecraft lists, since I am not sure where > the issue lies. > > After some experimenting, I find that my K3S will shift the receive > frequency after transmitting in RTTY (FSK D Data mode.) Finding a busy > band, I can see that if I tune in 5U5R exactly on 14.080.000, then send a > RTTY transmission that after the RTTY transmission ends my rig is now still > showing 14.080.000 on the screen but I am receiving a signal from somewhere > around 14.078.78, near as I can make out from the P3. There's another data > mode being used down there and the fellow has a nice, strong signal that > comes and goes so I can tell when the signal starts and stops. This happens > when I send from the keyboard as well as from a macro. > > I first noticed this in live transmissions but have spent the last half > hour in TX Test mode, and the same thing happens even with no output. > > As soon as I tap XFIL the filter setting doesn't change but there the 5U5R > is again. > > Alternatively, if I rotate the Shift knob either direction, the 5U5R is > back. The FC is set to 2.21 kHz. > > Alternatively, if I rotate the width control in either direction, it goes > back to receiving the 5U5R. > > This only happens when I am using the 400 Hz 8-pole filter or the APF > (which also uses the 400.) When I use the 2.7 5-pole this doesn't happen. > > This feels like something is applying an offset of 1220 Hz while I transmit > and not letting it go. But I'm at a loss to figure it out. My digi app is > WinWarbler, and I have AFC unchecked. It shows a steady freq for xmit and > rcv at 14.080.000 during all this. > > 1220 is just about half of 2210, so there's that. Also, the K3S TX Test > mode doesn't key the finals, so there's no RF getting into it. > > This feels like something is set wrong, but blimey if I can figure it out. > > 73 de Chuck, WS1L > -- > > > =================== > Chuck Chandler > [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]
