Jan 25 2022.
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Try this: https://www.rtl-sdr.com/rtl-sdr-quick-start-guide/
Nope.
Try this: sudo port install gqrx
had to 'accept' Xcode license- sudo xcodebuild -license
then
sudo port install gqrx
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This next script almost works... finds time closest to current one and spits out winds at 30,000 ft
So (u,v) is a vector with x and y components of wind in (W to E, S to N) coordinate system. But our definition of azimuth is from y axis rotating towards x axis.
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There is also a contrail predictor avail as a plug-in add-on to Windy. It uses the Appleman criteria for exhaust contrail prediction.
Windows software for decoding Vaisala RS41:
http://escursioni.altervista.org/Radiosonde/