FT8 Decode failing caught on video

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  • Problem
  • Updated 9 months ago
  • (Edited)
As many of you know I've been dealing with an FT decoding issue for a long time. I've sent the radio in for repair but the problem is still there.

Tonight I had 3 WSJT-X sessions open for 20, 30 and 40 meters. After monitoring for about 2  hours I noticed that decoding was stopping on 30 so I started a video to capture what was going on.

In the video (easier to see with full screen) you will notice the last decoded FT8 signal on 30 meters was at . 040815, on 40 meters was 042545 and on 20 meters signal are still decoding for another minute or two.

Notice that each pan is showing continuing signals and the DB levels on each WSJT-X session is showing activity yet the decoding has stopped completely on 30 and 40 and eventually stops on 20 as well.  Each band stopped decoding a few minutes apart from the other bands.

Notice also the DT values all reasonable as I use Meinberg to ensure accurate timing

I also display DDUtil to show the voltage at 13.8 and the temp at 30.4c and  the control panel to show the current settings.

So the video shows that whatever is causing the decode to stop is causing it to stop one band at a time until they are all stopped. . This happens with JTDX as well so I know it's not a WSJT-X issue.

After about 15 minutes 20 meters started decoding again but 30 and 40 are still stopped and both bands have lots of activity

If anyone has any suggestions I would like to hear them

I'm adding this info to the current ticket


Photo of Pat N6PAT


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Posted 9 months ago

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Photo of KY6LA - Howard

KY6LA - Howard, Elmer

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It’s probably time for Flex to close this thread
Photo of Michael N3LI

Michael N3LI

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I second that motion.
Photo of Dan Quigley N7HQ, 4O7HQ

Dan Quigley N7HQ, 4O7HQ, Service/Support Manager

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Folks, thank you for jumping in and assisting Pat, N6PAT.

A few times a year, we run across more complicated, systems-level problems that resist attempts to identify a single root cause, because there is more than one issue.  In these situations, we work with the customer to systematically isolate the problem at the customer's pace.  In this case, we identified a problem with his radio, have repaired it and recertified that his radio passed our factory tests. 

Even with a properly functioning radio, Pat is still having issues, and as we would with any customer, we are actively working with him in his helpdesk ticket so that we can track it to a successful conclusion. 

Dan Quigley, N7HQ

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