I have experienced this countless times using FT8. In my case it raised complex 
questions about display algorithms  in Windows 10.  The closest explanations 
addressing these issues were  given to me by Mike .mdblac...@yahoo.com 
<mailto:mdblac...@yahoo.com>  Below is a copy of my email referencing this 
information to another user of this list.

I would like to know what really is going on.  

All the best 

Lorin WA1PGB/6

From email thread " [wsjt-devel] Feature Request”  April 1 2019   ( I don’t 
think it was date related - At least I hope not)

…. I believe Mike is correct in suspecting an audio dropout. He helped me 
understand the complex power-use issues in Windows 10 (made even more 
complicated when running Parallels on a Mac).. instead of using the Halt button 
(which I never tried} I have to leave the WSJT FT8 program by switching to 
Safari or email or something else for a minute or two and then return to find 
my FT8 window covered in red with incoming received calls from the exotic DX 
stations I had called for hours that seemed to never reply for those hours on 
end.

 While I don’t know exactly what’s happening, I had spent months with only a 
rare return call and then in frustration started to do something else to then 
return to see the fruits of the program’s labors.

Fascinating question about whether the laptop display screen on the Macbook Pro 
effects the power usage of wsjtx FT8 enough to prevent or distort reception 
and/or decoding. 

Would love to know more from anyone about what might be going on,


> On Apr 30, 2019, at 4:36 PM, rjai...@gmail.com wrote:
> 
> I also experience same.
> 
> Ria
> N2RJ
> 
> On Tue, 30 Apr 2019 at 19:33, John T Haworth <jthawo...@charter.net> wrote:
>> 
>> Hello,
>> 
>> I have had a large number of failed QSO’s. The station responds with Tx2 
>> within a couple of calls, but then it appears they are not decoding my Tx3 
>> response and eventually abandon the QSO. The stations are normally very 
>> strong and give an equally strong report.
>> 
>> What could be some areas to investigate?
>> 
>> Configuration:
>> 
>> -Ubuntu 18.04 LTS
>> -Elecraft K3 with USB/Sound Card upgrade
>> 
>> Thanks and 73 John NU8M_______________________________________________
>> wsjt-devel mailing list
>> wsjt-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/wsjt-devel
> 
> 
> 
> -- 
> Ria Jairam, N2RJ
> Director, Hudson Division
> ARRL - The national association for Amateur Radio™
> +1.973.594.6275
> https://hudson.arrl.org
> n...@arrl.org
> 
> 
> _______________________________________________
> wsjt-devel mailing list
> wsjt-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/wsjt-devel

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