Hi Nic I guess you are referring to the DT value on the widegraph. A value is printed to the screen after each decode period. On noise, or a signal too weak to gain sync from, the value will be random (within certain limits).
If the signal is strong enough to gain sync, but not decode, then the value should correspond within about 0.1s to EME delay + any receiver latency (assuming PC clocks are correct both ends). Have you tried using the Q65_sync plot on the widegraph? This can also be used as an indication that a signal may be present, although it does also show up birdies to some extent. 73 Charlie DL3WDG On Sun, 6 Jul 2025 at 10:55, Nic Sears via wsjt-devel < wsjt-devel@lists.sourceforge.net> wrote: > Hi Nic G3YEG here, qrp 432Mhz EME station. > > With my very small system I have now managed to successfully decode 37 > different stations and estimate that without faraday intervention I have a > high probability of decoding any EME station running more than 30Kw ERP. > > Over the years, like many other stations, I often see valid DT values > before a full decode. > > What I have also noted is that quite often I will see repeated similar > “odd” but not correct DT values when on the correct tx period from > stations. > > My question is this - is this a real observation of the stations signal > due to the nature of the Q65B signal or is it my imagination? > > My set up is not that sophisticated (9700 with sp70 lna , short cables and > 9 ele in loft space) but i use the very latest wsjt, new laptop with i7 and > 32gb memory. I always re run files using single decode together with a > sliding window technique moving the qrg to find signals with ftol set at > 50hz > > Thanks in anticipation of ideas / explanations. > > Nic G3YEG > > > > > > > > _______________________________________________ > wsjt-devel mailing list > wsjt-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/wsjt-devel >
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