I just received my Airspy mini. Today, I tried it with a noaa apt satellite. The audio was clear from beginning to end of the satellite pass. Signal to noise ratio was like 30db+. It was a very clean pass though with some few radio interference which happened like 4-5 times like a 1-2 second interference. However, when I tried to process the wav file into wxtoimg, the upper and lower part of the image was not visible. I can scroll up and down within wxtoimage but it was empty. The image is only in the middle. I've never encountered this behavior when I was using rtlsdr dongle.
You can see the image and my gqrx settings from this link - https://imgur.com/a/CjOG7
Any help would be greatly appreciated!
Neil