Mike, A number of radios have limited frequency response when used in Data mode compared to USB mode.
My own Elecraft KX3 rolls off starting at about 400 Hz when used in Data mode. With the right settings in USB mode, the low end stretches down to closer to 100 Hz. I’ve measured this, and could demonstrate it if you need proof. Perhaps there is a setting in Data mode that gets around this, but I sure haven’t found it. Using Data mode for FT8 would be soooooo much better operationally, but alas… I bet other radios have this or similar problems. Yeah, there are very effective tricks to get around this. In Fox and Hound DXpedition mode, Hounds can work around the problem by offsetting the VFO from the nominal Fox bands. Foxes can set their TX Freq to something higher than the default 300 Hz so that they can hear Hounds giving their reports. There’s workarounds for all the problems. But, I bet that only a small percentage of the WSJT-X users who focus on FT8 and FT4 operation on HF bands even are aware of these little details. So, that kinda ends up like this: “The patient says, "Doctor, it hurts when I do this." The doctor says, "Then don't do that!” ― Henny Youngman Might not be ideal. Clarke K1JX > On Nov 4, 2021, at 10:59 AM, Black Michael via wsjt-devel > <wsjt-devel@lists.sourceforge.net> wrote: > > And why USB and not Data mode? Might help others to know or is there a bug > there? > > Mike W9MDB > > > > > On Thursday, November 4, 2021, 09:57:31 AM CDT, da...@beauchesne.net > <da...@beauchesne.net> wrote: > > > I have a FTDX-5000 with WSJT-X 2.5.1 and use split with no difficulty. (And > have had no difficulty running split all the way back to the first version of > WSJT-X that supported FT8.) > > I do not use DATA modes – just plain USB filtering. > > > David, AK2L > > > > From: Black Michael via wsjt-devel <wsjt-devel@lists.sourceforge.net> > Sent: Thursday, November 4, 2021 05:36 > To: WSJTX Group <m...@wsjtx.groups.io>; WSJT Software Development > <wsjt-devel@lists.sourceforge.net> > Cc: Black Michael <mdblac...@yahoo.com> > Subject: [wsjt-devel] Yaesu rig split problems > > > I'm trying to solve rig split operation problems with Yaesu rigs and need > some Yaesu operator help... > > > I need any Yaesu owners to state their rig model and whether or not "Rig > split" works in WSJT-X or if you see flashing on the rig when Rig split is > turned on. > > > So 3 questions > > #1 Can you make QSOs? > > #2 Does rig operation look smooth? Should be a little activity as freq & > mode get set on both VFOs but it I'd like to know if the display goes a > little nuts when it's happening with Rx/Tx flickering or such. > > > Mike W9MDB > > > > _______________________________________________ > wsjt-devel mailing list > wsjt-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/wsjt-devel
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