On 17/06/2015 15:00, Steven Franke wrote: > Hi Mike and Bill, Hi Mike, Steve & All, > >> On Jun 13, 2015, at 12:33 PM, Bill Somerville <[email protected]> wrote: >> >> On 13/06/2015 18:25, Michael Black wrote: >> >> Hi Mike, >>> You can adjust the left edge of the waterfall in the WSPR instance That's >>> the "Start XXX Hz" entry. Just set it to 700 Hz. Then you can adjust the >>> Bins/Pixel to only see the WSPR band too. >> This is not a display issue, it depends on whether the WSPR decoder will >> decode signals away from the usual 1.5kHz +-100Hz zone. I am not in the >> shack and a quick glance at the code doesn't answer that question. Easy >> to try out with a receiver though. > The decoder is presently hardwired to decode signals within +/-110 Hz (or +/- > 150 Hz with the -w option) of 1.5 kHz. Since the decoder can read either .wav > or .c2 files, it seems to me that Mike’s request could be handled either in > wsjtx (by changing the center frequency used to derive the .c2 file) or in > the decoder. In any case, if there is a need for the decoder to work with > center frequencies other than 1.5 kHz, I’d be happy to make the change. I’ll > wait for Bill’s recommendation before doing anything on this. This is a fairly artificial requirement as it only helps on the 30m band. My opinion is that it isn't worth the added complexity for such a limited scenario. If at some point in he future all the HF and WSPR, JT65 and JT9 sub-bands were reorganized to a uniform pattern within a 5kHz block per band then this could make sense. I doubt this will happen because the beacon attributes of WSPR prefer a clear band segment. The coincidence of WSPR and other digital QSO modes on 30m is historical and driven more by other users than preferred allocation. > > Steve k9an 73 Bill G4WJS. > >>> >>> 73 >>> Mike W9MDB >> 73 >> Bill >> G4WJS. >>> >>> -----Original Message----- >>> From: Mike [mailto:[email protected]] >>> Sent: Saturday, June 13, 2015 12:02 PM >>> To: [email protected] >>> Cc: Mike >>> Subject: [wsjt-devel] -5578 dual WSPR and JT65/9 use via two instances. >>> >>> Hi, >>> Is there any way two instances of WSJTX can share the same audio on 30 >>> meters with one of them receiving the audio shifted by 700 Hz ? >>> >>> I run a JT65/9 monitor - it sits on 10.138 MHz, the WSRP region is 700 Hz >>> above that yet with another instance of WSJTX monitoring it always (as >>> expected) receives the 10.138 feed, is there a way to tell WSJTX to consider >>> the band start 700 Hz up, or via some kind of vfo offset? >>> >>> Alternative I can take the radio audio via a 700 Hz shift and output that to >>> a new pulseaudio sink which the other WSJTX in WSPR mode can use - but >>> thought to ask if a simple offset is possible first. >>> >>> Use case would be dual monitoring on 30 meters, both JTxx and WSPR. >>> >>> BR >>> Mike >>> OH2FCZ.
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