Hi Tamas,
Your files decode OK here in WSJT-X r7775 (running on Windows).
------------------------------------ 20m
130800 -7 0.6 1097 ~ EI4KF ES6DO KO27
------------------------------------ 20m
130815 -12 0.2 1098 ~ ES6DO EI4KF -13
------------------------------------ 20m
130830 -7 0.6 1097 ~ EI4KF ES6DO R-08
------------------------------------ 20m
130900 -17 0.7 1097 ~ EI4KF ES6DO 73
------------------------------------ 20m
131000 -11 0.6 857 ~ CQ I4WQH JN54 ~Italy
131000 -13 0.7 917 ~ CQ ES6DO KO27 !Estonia
-- 73, Joe, K1JT
On 7/2/2017 9:28 AM, Tamás Fábián wrote:
Dear Steve,
I get no decodes with FT8 and r7775.
I tried to call CQ and I got an answer, but could not decode that
either. (The CQ was heard by multiple stations according to pskreporter.)
Five sample recordings are in a .zip under the following url:
https://www.dropbox.com/s/sgcfehcdwfrp7th/wsjtx-r7775-nodecode.zip?dl=1
Cheers,
Tamas HA5FTL
2017-07-02 13:58 GMT+02:00 Steven Franke <s.j.fra...@icloud.com
<mailto:s.j.fra...@icloud.com>>:
For future reference, I’ve attached a plot summarizing the
performance of the FT8 decoder in r7775. The 50% decoding threshold
is at about -21 dB. These results pertain to an AWGN channel (no
fading) and were obtained using .wav files generated by ft8sim. Each
.wav file contains 25 signals. A total of 40 such files (1000
potential decodes) was analyzed at each SNR. The ft8sim DT parameter
was set to 0.5s for this simulation.
I should note that the idealized AWGN channel simulation used for
this benchmark does not reflect the type of conditions that we
typically see in real life on HF or 6m. This is mainly intended as a
performance benchmark for development purposes - not an
advertisement of actual performance in the real world!
Steve k9an
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