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):
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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:
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That’s really strange, I checked my HIRS images from NOAA 15 and I don’t have any vertical lines, was there any nearby interference?
It only works in day, but
ch20, ch20, ch20 + ch8 * 0.1seems to make a nice natural looking colour composite on HIRS. It’s a bit hard to see because of how low res the HIRS is, but it makes the land green and the oceans a dark blue.My HIRS from that pass (low elevation here):
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.