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SSB audio distortion #qmx #SSB Firmware beta 1_01_003 release #qmx #ssb


 

Oops.? My reply and comments were intended for Mehmet.?
I have some bands that have crazy-looking graphs like the ones he posted - even after I got them to complete all the way across.? But after they completed all the way across, the gross distortion was gone.
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Your note, Yun, about the 80m plot not finishing all the way across, but still you get good audio (after turning off the swap) - that shows that my theory is not the complete story, even though it has worked for me and a few others...


 

Hi Stan,
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Out of curiosity, does it complete on consecutive runs for the same band or is just, seemingly, random?
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After some couple of hours of messing around with band settings, I did get it do a complete run on 20m. Without changing anything else, I ran it again to be consistent, the calibration quit at about 600 with another, seemingly, random plot!
I couldn't get it to do a complete run again after that with the same band settings.
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Mel. M0KMD.


 

On Thu, Apr 3, 2025 at 02:02 AM, Mehmet Dinch wrote:
does it complete on consecutive runs for the same band or is just, seemingly, random?
I usually didn't try again after I got it to work.? So I don't really know.? In fact, I have no idea why changing the band settings would help it to work - I don't think it has a direct relationship - probably something more subtle.? But without changing band settings, it would repeat the same bad run each time.


 

From my experience, it seems random. I got it to complete to about 2000 on one occasion after tinkering with the band settings for 20m. Without changing anything else, the next run only got it about 600 and was not able to get another complete run.
You can see my plots just a few posts below. /g/QRPLabs/message/142310
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@Hans, any theories as to why this is happening?
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Cheers.
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Mel. M0KMD.
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Hello Mel

@Hans, any theories as to why this is happening?

No theories. But I'm on vacation right now so can't investigate anything. Even when I'm back in the lab on Monday I have a lot of catching up to do then Dayton trip preparations and so things could be a little slow.?

73 Hans G0UPL


 

Hans,
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I appropriate the reply but wasn't expecting you to post back as I know you're away on your holiday.
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Thank you though. :-)
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Cheers,
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Mel. M0KMD.