The main image in post was decoded with WXtoIMG as both noaa-apt and SatDump fail to synchronize it correctly.
Unprocessed image from noaa-apt:
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Waterfall:
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There you can see some breaks, the noticeable horizontal lines.
Which sounds like so (note: the waterfall shown above isn’t from the same time as audio):
Compatibility audio link
And the bonus, DSB images:
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Channels 1-20 are left-to-right then bottom.
And also AVHRR scan motor current as of today:
Compatibility image link
Nope. I also had those lines when I tried before, so I thought it’s something with the satellite. Maybe there is some interference. NOAA-19 uses different frequency for DSB. I’ll have to try with NOAA-18 (and hope it doesn’t cut off again), that should be on same frequency as NOAA-15. But I didn’t notice any interference.
Thanks for that setting. That looks nice.