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The way I solved random missed decodes on WSJTX / JTDX on W10
I was having random no-decodes and no decodes at all on WSJTX & JTDX and
after spending several hours following many threads on this forum, I found this particular solution that worked for my setup.
I really needed to know who was the troublemaker: WSJTX, DAX or the PC
After making sure the PC and WSJTX were 100% tuned, I decided to focus on the DAX.
I started recording satisfactory decodes and no-decodes on wav files.
I analyzed each file with an audio program (Goldwave) and didn't 'see' anything strange on the waveforms...they look identical to me.
However, when I played the files on the loudspeaker I could hear short and fast 'clicks' on the files that couldn't be decoded by WSJTX.
That opened my eyes there was something wrong with the audio sample that WSJTX was listening to.
Here is what solved it for me:
I went to the DAX AUDIO RX properties and changed the sampling rate from STEREO to MONO.
after doing this for the DAX Audio RX, voila! 100% good decodes and no more 'clicks' on the wav files recorded by WSJTX
I tested it for several hours and runs really nice with 100% satisfactory decodes!
I also make sure WSJTX has the highest priority (realtime) as a process on windows 10.
Open your task manager and locate the WSJTX process and set it for real time priority.
You can read more on how w10 handles processes here.
I hope this will help those who have issues with random no-decodes on WSJTX.
Happy FT8 & DX!
JP - KG5ZZB
I uploaded the recorded WAV files in case you want to hear them and compare them to yours.
https://gofile.io/?c=e4aozk - No-Decode sample
https://gofile.io/?c=2bpXnN - Good Decode sample
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