hackrf-spectrum-analyzer VS urh

This may be close to what you want: https://github.com/pavsa/hackrf-spectrum-analyzer I used it before to look at the output of a satellite TV LNB to see if the weaker transponders that the STB wasn't able to detect are really there or if they're disabled. They were there, just not strong enough for the STB.

hackrf_sweep may be what you're looking for: https://github.com/pavsa/hackrf-spectrum-analyzer

Isn't that equation what a spectrum analyzer does, continuously? I'm planning to use a SDR as a GNU Radio software oscilloscope for looking at the pulses generated by the transmitting SDR, and it can also be used as a spectrum analyzer. It would be interesting to see a malformed pulse's wideband noise, if I could even get the transmitting SDR to pulse that fast.

I really like its ability to sweep frequencies quickly. Check this out.

>> or somewhat expensive and complex SDR

I don’t think that’s as accurate today as it used to be.

On the hardware side there are tons of options very cheaply available - iirc the flipper uses the c1100 (or a number like that) it’s a popular cheap chip and it’s well documented and interfaces easily with arduino.

More accessibly, lime mini SDRs are cheap but there’s quite a few alternatives too.

On the software side GNU Radio is free with decent tutorials - we’re not talking anything like blender levels of difficulty to adopt even if it is a complex domain.

Although on the more accessible side, urh is incredibly powerful given how easy to use it is https://github.com/jopohl/urh

I used the latter to tap into a 2 channel wireless bbq thermometer via a $10 rtl sdr and that was a breeze, an absolute walk in the park compared to when I reverse engineered the flysky telemetry system.

Universal Radio Hacker on Github

you should check out Universal Radio Hacker

Check out URH.

URH can read flipperzero sub files and can export from wav to sub... https://github.com/jopohl/urh

Throw the recording at UniversalRadioHacker and see what it does with it!

I dont have much knowledge on decoding a signal from scratch but try URH - universal radio hacker here. It might be able to do what you need.

It's useful for transmitting digital RF signals to control household stuff, eg. ceiling fans or whatever. You'd want to also look into rtl-sdr and Universal Radio Hacker.

Tried tool https://github.com/jopohl/urh and it does not get too much information. I am expecting to find something similar to wireshark - it can detect protocols in traffic and highligh different kind of fields in packet headers.