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.

1 Like
5

Thanks for the response. so your recommendation is to use ganradio.? My goal is to receive. IQ Data in the real time. Is there any Docomentation or tutorial how to do this.?

6

Yes I would recommend GNU Radio. Unfortunately we don’t have any documentation about recording with GNU Radio, but this is a basic function in GNU Radio and I believe any standard GNU Radio tutorial should cover it.

7

I attempted to install GNU Radio, but I encountered several challenges. The documentation is unclear and lacks sufficient detail. Additionally, there are issues with version compatibility—following the provided instructions results in the installation of version 3.8.2, while the CMake file specifies version 3.10.

My goal was simply to extract IQ data, which should be a straightforward process when using a receiver. However, the installation and setup have proven to be unnecessarily complex and frustrating. It seems I am not the only one struggling with these issues.

8

can u plz share how u handle it

9

What instructions are you using to install GNU Radio? We can’t really provide support on the installation of GNU Radio as that is outside the scope of our company support.

10

krakenrf/gr-krakensdr

11

Those aren’t instructions to install GNU Radio itself, those are only instructions for installing our OOT module into GNU Radio.

Here are the official instructions for installing GNU Radio itself: InstallingGR - GNU Radio