Thank you Charlie DL3WDG, Bob KA1GT and Mike W9MDB for looking into the code and putting your finger on it!
I can confirm that all 3 radios IC-705, IC-910H and the Flex6700 behave the same now depending on the "VHF and sub mode features” setting. VHF on = correct (fixed 1500 HZ) VHF off = tone shift based on previous mode setting or wide graph click And yes, the IC-705 profile was the only one that had it unchecked. Great find! Mystery solved. 73, Andreas, N6NU > On Aug 4, 2023, at 2:24 AM, Reino Talarmo via wsjt-devel > <wsjt-devel@lists.sourceforge.net> wrote: > > Hi Andreas, > It would be nice for you, if the echo mode had a ‘fail safe’ setting that > forces the transmission to 1500 Hz. The source code is available and you may > add that into the program. Otherwise the instructions are clear how to use > the echo mode. > 73, Reino OH3mA > <> > From: Andreas Junge via wsjt-devel [mailto:wsjt-devel@lists.sourceforge.net] > Sent: torstai 3. elokuuta 2023 22.16 > To: WSJT software development <wsjt-devel@lists.sourceforge.net > <mailto:wsjt-devel@lists.sourceforge.net>> > Cc: Andreas Junge <andr...@n6nu.org <mailto:andr...@n6nu.org>> > Subject: Re: [wsjt-devel] #Echo Echo shifts TX frequency when clicking "Set > RX & TX offset" - should be disabled > > Joe, > > Yes, I have read it. I also read Bob's (KA1GT) article. Please have a look at > this short recorded screen session: > > https://icecreamapps.com/v/fkkg3dt > > Either right-clicking into the wide graph and setting the offset - which > should not work since it should be fixed to 1500- or by previously being in > Q65 with an offset will cause this. > > It follows the pattern of @0-500 offset will subtract 1500Hz, @501-1000 will > subtract 1000Hz, @1001-1500 will subtract 500Hz and so on until +1500Hz > > I think this feature is used to keep the tones in the middle of the TX > passband, but it also requires a frequency shift of the generated tone which > does not happen because it's set to a fixed 1500Hz. > > In short, yes, there should not be a frequency shift on TX in the first place > and that is a bug IMHO. > > I enabled logging for the rig transactions and the radio is indeed commanded > to go to the wrong offset on VFO B it should be 144065000. > > rig_set_split_freq called vfo=VFOB, curr_vfo=VFOA, > tx_freq=144064000 > > It works fine when I right click on 1500Hz in the wide graphs or when 1500 > was selected in the previous mode. > > > 73, Andreas, N6NU > > On Thu, Aug 3, 2023 at 11:45 AM Joe Taylor via wsjt-devel > <wsjt-devel@lists.sourceforge.net <mailto:wsjt-devel@lists.sourceforge.net>> > wrote: >> Hi Andreas, >> >> Have you read the full-length paper about Echo mode in WSJT-X 2.6.0 and >> later? See item #34 in the list of WSJT-related references here: >> https://wsjt.sourceforge.io/refs.html . >> >> As described there, in Echo mode the transmitted audio-frequency tone >> should always be 1500 Hz. >> >> -- 73, Joe, K1JT >> >> On 8/2/2023 10:47 AM, Andreas Junge via wsjt-devel wrote: >> > I posted my initial question on the groups.io <http://groups.io/> list as >> > well, but Charlie, DL3WDG suggested to post it here as well. >> > >> > This is reproducible. In Echo Mode right click in the Wide Graph and >> > select “Set RX & TX Offset” it seems to change the TX. >> > >> > Steps: >> > - In the radio settings set "Split Mode" to Radio or Fake (No difference) >> > - Select "Echo Mode" >> > - Select 23 cm -> 1296.065 (Default) >> > - Select Doppler Tracking mode to "Own Echo" >> > - Display shows 1296.065 +/- My Doppler >> > - Enable TX >> > - The frequency will initially show 1296.06500 and the immediately change >> > to 1296.064500 >> > - On RX the frequency goes back to the correct 1296.06500 +/- Doppler >> > - The Echoes will be shown at the @1000 offset and not @1500, which is >> > expected, but wrong. >> > >> > After a few tries I found that selecting “Set RX & TX Offset” in the Wide >> > Graph >> > >> > If I click on @1000 I get 64.5000, @1500 65.0000, @2000 65.5000 >> > >> > The audio should be fixed at @1500 and the Set RX & TX feature should be >> > ignored. >> > >> > I think this if half of the feature that keeps the audio in the sweet spot >> > of the bandpass? However, it does not do the necessary 2nd step of >> > shifting the audio to adjust for it. >> > >> > 73, Andreas, N6NU >> > >> > _______________________________________________ >> > wsjt-devel mailing list >> > wsjt-devel@lists.sourceforge.net <mailto:wsjt-devel@lists.sourceforge.net> >> > https://lists.sourceforge.net/lists/listinfo/wsjt-devel >> >> >> _______________________________________________ >> wsjt-devel mailing list >> wsjt-devel@lists.sourceforge.net <mailto:wsjt-devel@lists.sourceforge.net> >> https://lists.sourceforge.net/lists/listinfo/wsjt-devel > _______________________________________________ > wsjt-devel mailing list > wsjt-devel@lists.sourceforge.net <mailto:wsjt-devel@lists.sourceforge.net> > https://lists.sourceforge.net/lists/listinfo/wsjt-devel
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