On 20/06/2021 17:55, Chris, HB9DFG
With interest I have read through this thread and I thought to
myself: why shouldn't I test this as well with JTMS, since I
assumed that all other
programmes concerning the FT8 decoder should actually react in the
same way. I once compared an older Version of MSHV but it lost a
of decodes compared with WSJT-X so I did not tried anew since
Well, I now have tested JTDX 2.2.156 and WSJT-X
2.4.0c19d62 a short time (for about 30-40min) on a
quiet 2m-band. The computer is still a
WIN7-machine with 8GB RAM and an onboard Realtek audiocard set to
the 16bit 48000kHz DVD system. BKTIMESYNC is in use here als well.
WSJT-Xs decoder was set to "deep" and "AP", JTDXs decoder was set
to: threats=auto, decoder cycles=1, decoder sensitivity=use low
Besides the good decodes on both programs (with big differences in
the dB values), I took out 13 wave files where either WSJT-X or
JTDX did not
- All in all I have picked one periode where WSJT-X had 3 decodes
(include one a1), and FTDX got 2 of them. Both programmes were
able to read the
corresponding other wave files of this periode where JTDX
couldn't read the "a priori" decode.
- An other periode got 2 decodes on JTDX and one on WSJT-X
- Also one periode got 1 decode on WSJT-X and no decode on JTDX
- The rest of the periods (10) got 1 decode on JTDX and no decode
- WSJT-X could read JTDXs only no-decode
- JTDX could read 5 of WSJT-Xs 10 no-decodes
Maybe if time permits I will try to make an other test with my
other W10-computer with the "soundcard" of my IC-9700.
Bill Somerville wrote earlier:
"...the only way to analyze the
issue you report is for you to provide a .WAV file recorded by
WSJT-X along with a list of the messages that you think
should have been decoded. Anything else is simply subjective
Fine Bill, did you already got such files to investigate and did
you found out something interesting? Or would you like to get my
wav-files to investigate?
If yes, where can I sent them as zipped files?
Best regards de
thanks for doing this objective analysis work, the examples would
be very useful. Do you have any free Cloud storage accounts like
Dropbox, Google Drive, One Drive, etc. where you can upload the
files and provide a download link?