Interested in joining us at GNU Radio Conference 2024, September 16-20 in Knoxville, TN? Regular pricing for registration ends tomorrow! After that, the pricing increases. #GRCon24 Register today: Learn about our keynote speakers:

Save-the-Date: GRCon 2025 in the Greater Seattle Area on 8-12 September - more details coming soon!

A look back at 2024 in the world of GNU Radio Happy New Year everyone!

RT @GNURadioDaysEU: Ad: A book that the author of this tweet hasn't read yet, but is already confident is outstanding, thanks to the expert…

RT @ea4gpz: Read more:

RT @ea4gpz: I also go into quite some detail about why frequency glitches are almost inevitable after dechirping, regardless of the procedu…

RT @ea4gpz: The voice signals in this challenge included narrowband FM, AM, and SSB. The SSB signal was almost hiding below the noise floor…

RT @ea4gpz: New blog post: Not-LoRa GRCon24 CTF challenge. This year I contributed a challenge track to the @gnuradio CTF. The idea of this…

The #GRCon24 #CTF walk-through session begins in 15 minutes (14:00 EDT, 18:00 UTC). Come see how players decoded our mystery signals!

RT @samiammiller: Congrats to all the top @gnuradio CTF teams! While I was hoping to beat my 8th place finish from last year, I really enjo…

After an intense third day of #GRCon24 #CTF competition, the final results are: 1st: Aerospace Team Platypus 2nd: ThdrBrds 3rd: radiofrikis 4th: WhatTheFreq! 5th: Make WX Great Again Full scoreboard: Tune in tomorrow for solution demos.

Eight hours to go in the #GRCon24 #CTF! Players are starting to get into the hard challenges and earn some big points. It's not too late to get started:

The top five teams are within 100 points of each other in the #GRCon24 #CTF! It's not too late to join in and decode some mystery signals.

GRCon24 Day 2 streaming now:

The #GRCon #CTF is under way, and runs until Thursday at 16:00 EDT (20:00 UTC). There's something for everyone; no prior #GNURadio experience necessary.

The #GRCon24 #CTF begins today at 13:00 ETD (17:00 UTC), and can be played remotely! Sharpen your #GNURadio skills by decoding our mystery signals.

RT @samiammiller: If you're wanting to join my team "Not The FCC" send me a DM

@FABallentineJr There are walk-through sessions and writeups posted for the previous years' competitions: See the links near the bottom of those pages. #GRCon24 #GNURadio #CTF

Registration is now open for the #GRCon24 #CTF! Earn points by finding secret messages ("flags") hidden in radio signals. The competition begins in 48 hours, and can be played online or in person. #GNURadio #SDR

To learn more about #GRCon24, visit and register today!