Like you said the issue here is getting an accurate reference time. Two options you might consider: 1. If you’re internet connected you could get time a trusted over network time protocol (NTP) 2. In outdoor setting (sounds like it is more applicable) you can get a trusted time from a GPS receiver. I remember seeing YouTube videos showing how to use gps as the time source for wsjtx on Linux. Not sure how easy it would be to do on windows or upstream into this app. But a usb gps might give you the data you need to detect and alarm on that time drift. (Also note there are other radio time mechanisms besides gps in different modes and bands)
73, Pearce - N2LW > On Jul 17, 2021, at 7:19 PM, Paul Bramscher via wsjt-devel > <wsjt-devel@lists.sourceforge.net> wrote: > > I was at a monthly outdoor ham event in the greater St. Paul/Minneapolis > area that's drawn loyal attendance the past few years. An operator > setup FT8 outdoors, but had some issues getting it to decode. We could > tell it was getting sound from his port, but there was no decoding. > > He was using Windows, whereas I'm Linux only so wasn't much help. > Another ham suggested he compare his system clock with his cellphone, > and that fixed it. I believe he said he was off by 5+ seconds. > > I'm wondering whether it might be possible, algorithmically to somehow > detect that a person's clock may be out of sync and present a > notification message. Of course there's the DT/Time Delta column when > you are able to decode. But, presumably, he had reached the point of no > return. > > I don't know how this might be possible without an accurate reference > clock -- but possibly based on the average timing of heard signals, or > some sort of signature within them, to cause a message to the user that > s/he may want to check their clock's accuracy? > > Just wondering what might be possible in this regard, and I suspect it > would help portable users, especially those who've been offline for a > number of days/etc. and their system clocks had degraded. > > 73, KD0KZE / Paul > > > _______________________________________________ > wsjt-devel mailing list > wsjt-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/wsjt-devel _______________________________________________ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel
