GNU Radio in the browser

Oh that's cool!

I've set off time to blog about getting my broadband RF scanner (connecting to USRP B200 via WebUSB) to work in WASM.

https://rf-survey.habets.se/

It's basically https://blog.habets.se/2026/08/Broadband-RF-scanner-revisite..., but in the browser.

I also have an AX.25 decoder (https://thomashabets.github.io/ruwasm/) and plain old FM receiver (https://cement.retrofitta.se/tmp/rtlsdr-fm/) already. The latter two work with RTL-SDR, also via WebUSB, so no software installs or setup required.

I've been meaning to make a "GNU Radio in the Browser" (well, gnuradio-companion-like) for my RustRadio project to build flowgraphs without coding, but not gotten to it yet.

I tinkered with gnuradio back when rtl-sdr just took off (2012ish?).

I had no background in dsp or signal processing and found it so opaque as to be unusuable, even though I saw more skilled folks do amazing things with it.

*scratches head*

Might give it another go.

This is so cool! Congrats!

That’s amazing, thanks for the share! I did a small test, it works, screen is a bit harder to navigate on small screens but not an issue.

Cool. On github forked and starred. Thank you.