On behalf of the KKNACKSAT-2 team, thank you very much for your help and support.
We really appreciate everyone who tracks satellites and shares observations of J-SSOD#35.
We would like to share an update about KNACKSAT-2. On 11 Feb 2026, we believe we observed the first signal across Europe, approximately 8 days after deployment. On the waterfall, we can see a repeating beacon pattern, with an interval of about 30 seconds.
However, we still need to confirm if the packet data shows callsign HS0K from KNACKSAT-2.
We will keep tracking and work on decoding the frames.
The observation below shows the beacon transmission every 30 seconds:
Those beacon observations show the frequency upper shift around 10KHz-20KHz,
Is this your specification? FSK 9K6 derivation should be 2.4kHz from the center 400.63MHz?
It’s seem that during 21Feb 18:03 - 18:08 UTC, TSC-NARIT Made first contact with KNACKSAT-2 (first picture) and second contact following by @fredy new schedule at 4044 - South Australia - UHF at this observation SatNOGS Network - Observation 13452879. I have decoded using provided decoder second succession after TSC Station decoded
Amazing and wonderful to see KnackSat-2 put on such a SHOW after being silent for so long! Should we also be listening for the 9k6 APRS on 145.825 or will that only be switched on later? Thanks!
Here is an update from the KnackSat-2 Team ref. the 145.825 transmitter!
Date: Tue, Feb 24, 2026 at 11:54 AM
Regarding APRS on 145.825 MHz (9k6) — the APRS digipeater is not enabled by default at the moment. It will be activated later according to our planned schedule.
The satellite remained in standby on the ISS much longer than we originally expected — about 175 days instead of the planned ~90 days. After deployment, it needed time for the solar panels to recharge the battery and allow the system to return to stable operation.
We’ll announce it here and through our usual channels once the APRS digipeater is enabled so everyone will know when to start monitoring 145.825 MHz.
At the moment, I’m unable to reply on the SatNOGS forum as my account appears to be pending review, so please feel free to share this information there if needed.
Best regards,
KNACKSAT-2 Team
