Graw sponsorship 2025, SondeHub Tracker updates and KA9Q support in radiosonde_auto_rx

Hi all!

Apologies for the long time between updates here - we really appreciate your continuing support!

Once again we are very happy to announce that GRAW Radiosondes are continuing their support of SondeHub. Their generous support allows us to keep SondeHub running and available to everyone. Without their support it would be much harder to provide the services and features we do.

You can find out more about GRAW Radiosondes on their website.

SondeHub Tracker Updates

Lots of work has gone into improving the performance of the SondeHub Tracker, and resolving many outstanding issues. These updates include:

• Improvements to initial page load by fetching data while the splash screen loads

• Changes to the colours used, to better increase contrast and ease confusion

• Rendering fixes

• Performance and usability improvements - focusing around mobile users

• Many many bug fixes

We’re working on bringing these updates across to the SondeHub-Amateur tracker (which is a separate codebase).

radiosonde_auto_rx v1.8.0

One of the big updates in the past few months has been the release of radiosonde_auto_rx v1.8.0. This release includes full support for the open-source KA9Q-Radio network SDR server, which allows us to monitor the entire 400-406 MHz radiosonde band using an Airspy R2 or Mini and a RPi 4 or better. We’ve already seen reports of stations decoding 10 radiosondes simultaneously! 

This has been a long time coming, and I’d like to give a big thanks to Clayton Smith and Andrew Koenig for doing a lot of the work on this one. Also a big thanks to Phil Karn KA9Q for providing the community with such awesome software!

If you’re in an area where you regularly see more than a few radiosondes simultaneously, we highly recommend that you look into upgrading to an Airspy+KA9Q based receiver setup.

Screenshot: An example of rasiosonde_auto_rx decoding ~10 radiosonde simultaneously - Thanks to DJ2DS for this!