SigDigger VS SDRPlusPlus

Local playback? SigDigger is highly recommended: https://batchdrake.github.io/SigDigger/ – it also supports different data modes.

SigDigger is good for a playback of prerecorded full-spectrum files (also called IQ files). Has the time slider, so if you missed anything you can rewind. https://batchdrake.github.io/SigDigger/

For just playing back the wideband recordings SigDigger is a good option.

There is good software for identifying the type of modulation used, and demodulating it, for example SigDigger

SigDigger: https://batchdrake.github.io/SigDigger/ The best thing is that it can move through time and frequency, so you can go back / forward if you need to.

I'd like to add to the answers a fantastic yet relatively unknown piece of software called SigDigger. It is a GUI for suscan. You can run a suscan device server at the raspi and run a remote SigDigger instance. Network bandwidth is minimal because only the FFT and demodulated signal is sent. https://github.com/BatchDrake/SigDigger

https://batchdrake.github.io/SigDigger/

> people downloading telemetry data from space probes

Monitoring JWST transmissions, if doable, might be the next milestone for Ham Radio.

SigDigger

Hi, you can use Sigdigger to perform this task, using FSK inspector. After some tweaking you will be able to display Wefax image. You'll perhaps need to perform line alignment at start. example : https://twitter.com/BatchDrake/status/1216072630698156033?s=20 SigDigger sources As note I can add the purpose of SigDigger is not to decode Wefax, and there are many features ! Hope this can help

I'm using newest SDR++ nightly built. win x64. Anyone can resolve this problem? Mabye I'm not using the right driver for SDR++? If so where can I find the right one?

SDR++ from GitHub (https://github.com/AlexandreRouma/SDRPlusPlus) runs on M1

Ah, I see what you mean, it's been a while since I looked at their repo. They don't seem to have one for ubuntu jammy yet in their stable release branch. But they do have an ubuntu jammy one in their nightly builds https://github.com/AlexandreRouma/SDRPlusPlus/releases/tag/nightly. I did give it a go and it seems to work okay, but obviously you would need to try it more thoroughly than I have.

What incompatibility? Do you think that this code https://github.com/AlexandreRouma/SDRPlusPlus doesn't support ARM?

SDR++

Some software tips. There is a newer version of SDR++ that includes an IF filter for NOAA APT signals that should help improve things: https://github.com/AlexandreRouma/SDRPlusPlus/releases/tag/nightly That gives you a new checkbox under the Radio section called "IF Noise Reduction" with a dropdown to select the type of reduction (where you select 'NOAA APT'). You can also use the "Decimation" option in the Source section to give a bit better SNR. From what I've read you get a 3db reduction in noise every time you double the decimation level. If you can't get rid of the noise around 137.1MHz maybe try going for NOAA 15 or 18 since those are at higher frequencies, hopefully away from that noise.