Recording IQ data from 5 SMA to file

1

Hello

After reading the forums it seems a few people are trying to do the following

Recording raw 5 IQ channels to file. I have seen various responses from ‘use GNU radio’ to ‘use our custom acquisition software’. Is there any docs on the website? What is the best way to get going.

For example i gathered that Raspberry PI4 is probably not the way to go. I plan on installing the virtual box on a windows laptop. I also understand that I want to disable DOA

Any advice appreciated. I am a bit of a noob here. Please PM if consulting private is feasible.

1 Like
2

There are several options.

  1. Install heimdall to a SBC like the Pi 4, then connect to it remotely over the network and make recordings using GNU Radio.

  2. Run heimdall and GNU Radio on a PC

  3. Using heimdall_iq_rec to record from the terminal GitHub - krakenrf/heimdall_iq_rec at development (Note that there is no documentation for this written yet).

3

There is no clear documentation regarding the options that were presented.
For option 3, the README contains only a single line of information.
Over the years, many people have asked about this issue, and it would be incredibly helpful if there were proper support or detailed documentation explaining how to retrieve this data.
I would greatly appreciate your assistance with this.
Thank you!

4

For 3) you basically just run a standalone heimdall instance first.

Then run start_recorder.sh and the onscreen manu should tell you what keys to press to start a recording.

This was mostly used for testing, and nowadays just using GNU Radio to record is probably what most people want to do.