Charlie and Joe, Wait, In re-reading the document I see that it says that audio spectra, not TX audio, is shifted. And so that explains it. But I clearly remember seeing the echo at 1500 Hz in older versions. So I guess the method was changed at some time. 73, Russ – K2TXB From: Charles Suckling <g3w...@gmail.com> Sent: Wednesday, January 1, 2025 2:17 PM To: k2...@comcast.net; WSJT software development <wsjt-devel@lists.sourceforge.net> Subject: Re: [wsjt-devel] Echo mode not working right in RC7 Hi Russ Echo mode now always transmits a 1500Hz tone. With Doppler set to None, the echo is shifted at audio. You see tone on waterfall but not at 1500 unless your self Doppler is 0. More here: https://drive.google.com/file/d/1SWQUYuZqlvlYow2Kc-OapMRaOc5b-h_n/view?usp=sharing 73 Charlie On Wed, 1 Jan 2025 at 19:41, k2txb--- via wsjt-devel <wsjt-devel@lists.sourceforge.net <mailto:wsjt-devel@lists.sourceforge.net> > wrote: Hi all. It seems that in echo mode, WSJT-X is no longer adjusting the TX tone to compensate for doppler shift. To test this, I set up on 2 meter EME, with Doppler Tracking enabled but track mode set to none. While running echo mode I also observe the frequency of the returned echo on the WSJT-X waterfall. This morning doppler shift was at +120 Hz, and the returned echo was displayed at 1620 Hz. If TX frequency was being shifted, the echo should appear at 1500 Hz.
I am quite sure that this worked properly in earlier versions. 73, Russ - K2TXB PS: After writing the above I realized that I had ignored a much easier test. I turned on another receiver and monotored the tone from the EME rig. It always sends at 1500 Hz in echo mode, no matter if Doppler Tracking is enabled or not.. _______________________________________________ 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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