H-line-software VS urh

I observed the "H-Line", https://en.m.wikipedia.org/wiki/Hydrogen_line

Made a GIF of the transit of the milky way using this software on a raspberry pi with some SDR/RF equipment. https://github.com/byggemandboesen/H-line-software

Unfortunately I only have some images on my phone right now, a git page is on my todo.

You'll find the H-line-software on : github.com/byggemandboesen/H-line-software. There is a requirements.txt file which will install the necessary Python packages. Python3 is afaik also available on github. But you can just google 'Python3 download'.

For anyone wondering what software we're talking about, here's a link to the GitHub repository. I am planning to do some updates to it in the near future for better performance, better looking observations/plots and a more intuitive UI.

Then I found H-line-software (https://github.com/byggemandboesen/H-line-software). It's running without GNU radio and makes interval reading for 24 hr with automatically produced GIF animation from the spectrums. So you can see pretty clearly how the Milky Way drifts over you. A small map shows to where your RT was pointing while reading. Scrolling down this subreddit you will find several posts with images from out of this software.

I have a wifi grid antenna into a nooelec SAWbird+ H1 into a nooelec SDR + some cables. I’m using https://github.com/byggemandboesen/H-line-software to receive/graph basic graphs and then my own webpage with the Plotly JavaScript library to make my map

I, however, want to ask about how you're trying to detect the hydrogen line peak? Are you using software like SDR++, SDR# or similar? I that case, I would propose trying to use custom software dedicated for H-line astronomy. The hydrogen line is still quite weak and it often requires an average of multiple FFTs. For that I'd advise my own software which will work with a couple python libraries and run on Linux, windows and etc.

You probably need to look at the Soapy SDR interface in that case. Other pre-made projects are Virgo, Pictor, and my own software (which unfortunately only supports RTL units) https://github.com/byggemandboesen/H-line-software

My hydrogen line software

>> 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.