There’s some setup and calibration necessary for the software. Under Linux, you can do this with Pulse or Jack very easily without any extra hardware. shows how to use a virtual audio cable on Windows to connect the output of the radio to the input of the WXtoImg program. The satellites in question operate around 137 MHz, but that’s easily in the range of even the cheap SDR dongles. The program works on Linux, Windows, and Mac. This is abandonware, but the community has kept the software available. The software is the venerable WXtoImg program.
Josh also has another project using a 3D printer to make an antenna suitable for the job. This used to be more of a production than it is now thanks to software defined radio (SDR). Has a series called Ham Radio Crash Course and a recent installment covers how you can grab satellite images directly from weather satellites.
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