Today is Software Freedom Day and GRAW is beginning! 🤩

To celebrate both, I will host my workshop Knitting Our Internet, at 17:00 at Foundation B.a.d (Talingstraat 5, Rotterdam), the incredible place where I am living and where I am doing a guest residency.

• More info here
• About Software Freedom Day
• A post for those who still have Instagram (🤮)

You are all most welcome to come, invite friends!

Free attendance.

#Rotterdam #SoftwareFreedomDay #SFD #SFD2025 #FreeSoftware #SoftwareFreedom #GRAW #OurNet #KnittingOurInternet #Workshop @dff

Sondehunting at winter! My first of the this year. -17 degC, recovered by skiing in the forest for an hour. Lots of snow. Everything at ground. Wooden spool with party-balloon and eco strings. Graw DFM17 #23063112.

#radiosonde #sonde #graw #grawsonde

RS41ng #hamradio firmware for @GrawRadiosondes DFM-17 #radiosonde s ready for testing! CW, APRS and Horus 4FSK modes supported. Thanks Mike KD2EAT for collaboration!

👉 https://github.com/mikaelnousiainen/RS41ng

The video below shows APRS decoding on a Kenwood TM-D710G and Direwolf software.

Because of the experimental nature of the firmware code, we recommend NOT using a DFM-17 as your primary flight tracker yet. Instead, please test it first as a secondary tracker.

#amateurradio #hab #dfm17 #graw

Figured it's finally time to activate this account (and not post to that other service only), so the best way to start is with some #amateurradio hacking:

This #Graw DFM-17 #radiosonde has learned some new tricks and it chirps CW (morse) and Horus 4FSK modulations on the 70cm ham radio band. This is a work-in-progress port of my #RS41ng radiosonde firmware, as the DFM hardware is very similar to #Vaisala #RS41.

Next up is #APRS + testing, so soon you'll be able to repurpose your #DFM17 sondes!