Hi Steve, Jim's question was stimulated by tests I have been running at KPH to compare the decode performance of the wsprd in 1.9.1 against the wsprd in 2.0rc3
My test setup is located at KPH where I have one KiwiSDR fed by a 3-30 Mhz TCI-530 and a second KiwiSDR fed from a Marconi T. I don't use the excellent wspr decode extension included in the Kiwi, but instead run a bash script on a Raspberry Pi 3B which records a 2 minute wav file for each band from 2200M through 10 M. Each 2 minutes wave file is then fed first to wsprd 2.0 and logged as KPH2 and then the sme wav file is fed to wsprd 1.9.1 and logged as KPH. After 24 hours I can find no difference between the KPH spots and KPH2 spots. The wsprd binaries were obtained by downloading and installing packages from the WSJT-x site and the binaries definitely are different sizes: pi@KPH-Pi2:/tmp/kiwi-captures $ lrt /usr/bin/wsprd* -rwxr-xr-x 1 root root 46376 May 30 17:32 /usr/bin/wsprd -rwxr-xr-x 1 pi pi 79972 Oct 16 21:32 /usr/bin/wsprd.v2 pi@KPH-Pi2:/tmp/kiwi-captures $ I can see from 'top' that my script is first executing wsprd.v2 and then wsprd, so I am confident in my test methodology. Perhaps I am misusing wsprd. Before processing each wav file I truncate the ALL_WSPR.TXT file but leave the other files used by wsprd alone. Could the two wsprd versions depend up the history in ALL_WSPR.TXT or be sharing information in wspr_wisdom.dat or the other support files which influence the results? Thanks, Rob AI6VN On Fri, Oct 26, 2018 at 3:37 PM, Steven Franke via wsjt-devel < wsjt-devel@lists.sourceforge.net> wrote: > > On Oct 26, 2018, at 2:21 PM, Jim Lill <j...@jimlill.com> wrote: > > > > What is the method to verify my system is indeed enjoying the 1 dB SNR > improvement that 2.0 gives? > > > > Thanks > > > > Jim > > > > WA2ZKD > > Hi Jim, > > You might try turning on “Save All” and running for, say, 24 hours or even > a couple of days. Then you can decode the saved batch of wav files using > older versions of WSJT-X and with new versions, and compare the yield. > > Suppose that you want to compare the WSPR decoder in WSJT-X v 1.9.1 to > WSJT-X v 2.0.0-rc3. > > 1. Run with Save All to save a large batch of wav files. > > 2. Delete ALL_WSPR.TXT. Start WSJT-X v 1.9.1 and use "File/Open" to > select the first (earliest) wav file in the batch that you saved. This will > cause WSJT-X to process that file. Next, select "File/Decode remaining > files in directory" to process the rest of the files. When you have > finished processing all of the files, ALL_WSPR.TXT will contain all of the > decodes. Rename ALL_WSPR.TXT to something different, such as > ALL_WSPR_1.9.1.TXT, so that it will not be overwritten or appended to by > subsequent runs. > > 5. Make sure that you have moved ALL_WSPR.TXT to a new filename. Start > WSJT-X v 2.0.0-rc3. Process all files. Rename your ALL_WSPR.TXT, e.g. to > ALL_WSPR_2.0.0.TXT. > > 6. Use your favorite tools to compare the decodes in ALL_WSPR_1.9.1.TXT > and ALL_WSPR_2.0.0.TXT. > > Here are some results that I obtained back in September: > > Bands monitored: 160/80/40/30/20/17/15/10 (these were monitored > simultaneously, using my SDR setup) > Start: 2018.09.13 0128 > Stop: 2019.09.18 2046 > > Total 1.9.1 decodes: 45344 > Total 2.0.0 decodes: 52126 > > (Number of 2.0.0 decodes) / (Number of 1.9.1 decodes) = 1.15 > > Thus, 2.0.0 increased the yield by 15%. > > Note that WSJT-X v1.9.1 contains enhancements that improve sensitivity > over that of v1.8 and prior versions for highly coherent signals, as > obtained on LF/MF and sometimes, on 160m. Thus, I would expect a somewhat > larger yield difference if v2.0.0 was compared to v1.8. FWIW, the > improvements in 2.0.0 are expected to increase sensitivity for all signals, > regardless of how coherent they are. > > YMMV! > > Steve k9an > > > > _______________________________________________ > wsjt-devel mailing list > wsjt-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/wsjt-devel > -- Rob Robinett AI6VN r...@robinett.us mobile: +1 650 218 8896
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