Check out ka9q-radio

[ka9q]

I've written my own multichannel receiver, one that can grab hundreds of independent channels simultaneously from a single front end. I run it on medium sized x86 systems and on Raspberry Pis. One Pi 4, connected to an Airspy R2, listens to about 250 channels on the 70cm ham band and records them all. Other Pi4/Airspy pairs monitor 2m and 125cm (222-225). An Intel i5 with an RX-888 grabs all of HF and extracts every HFDL, FT8, FT4 and WSPR transmission. It's open source, of course. If you think there's utility in combining it with your package, let me know.

http://github.com/ka9q/ka9q-radio

73, Phil