NOAA APT decoding and upload

[MasterJ]

Just for others who might stumble upon the same problem:

I found this topic:

Automatic Decoding Question

Perhaps, I do not know. Can anyone of the satnogs-client guys help us? As far the NOAA decoder concerns, you can use the --sync=0 option to disable the synchronization. This eventually will generate a non-aligned or even an only noise image, regardless the presence or absence of signal. Please post the resulting image and audio to be able to help you.

I changed the default value of the --sync option in the satnogs_noaa_apt_decoder.py to sync=0. This made my client successfully decode and upload images.

But then I found out that even with sync=1 my client could successfully decode images and upload them:

I adjusted the ppm error as described here: Adjusting the SatNOGS Client - SatNOGS Wiki

Furthermore I also adjusted the three gain values through satnogs-setup.
I played around with gqrx and in the end I used the highest value 49.5 [dB].

Now it seems like at least sometimes NOAA 19 images are decoded successfully.

setup: cheap RTL2832U device + RPI3 + satnogs-image + selfmade QFH antenna