Quick look at #TheyGoUpSoFast Electron rocket (or is it Kick Stage?) S-band signal we heard on 2232.45MHz just after launch. It's 2560000Bd BPSK with 1280 bit framing and sadly looks very much encrypted. More details: r00t.cz/Sats/Electron (thanks to FelixTRG - OK9UWU / OK2AWO for recording it)

For today's #Falcon9 launch I will be again combining data from multiple stations, to get best continuous video. You can message me or tweet at me links to your decoded frame files or I/Q recordings (ideally 6MHz BW/SR @ 16bits). Let's cover as much of the track as possible!

First video of today's #SpaceX #falcon9 from UHF Satcom 🇬🇧 📡 📻. Better video will be available when data from multiple stations are combined together. Stay tuned!

Video from 2nd pass of #SpaceX #Falcon9 today, as received by UHF Satcom 🇬🇧 📡 📻. A lot of fading, so start of the video is bit broken. But still very nice views of the Earth and some activity in the LOX tank. Enjoy! (Better video from multiple stations will be available in a few hours)

Finally here is the long awaited combined and cleaned up video from 1st pass of #SpaceX #Falcon9 on 2021-03-24. More of the great LOX tank views - check out that big bubble at 00:43. Original quality can be downloaded from: r00t.cz/Sats/Falcon9#S… Stay tuned for 2nd orbit video

2nd orbit combined video of #Falcon9 received on 2021-03-24. mp4: r00t.cz/Sats/Falcon9#S… Less time spent on LOX tank, more on the views of Earth. Some nice thruster action and sun moves into shot at the end. Again thanks to UHF Satcom 🇬🇧 📡 📻 Tom Hegedus // HA6NAB FelixTRG - OK9UWU / OK2AWO eb3frn for RXing it.

Encrypted downlink curse strikes again...

Sadly all signals from #SpaceX #Falcon9 are now encrypted. It was fun while it lasted...

#Tianhe1 S-band 2280MHz signal (thx FelixTRG - OK9UWU / OK2AWO): Spread spectrum 3069000Bd BPSK (1023chip seq) Despreads to 40kbps BPSK, with 1/2 FEC, contains 8192bit CCSDS AOS frames with 4xRS(255,223). S/C ID is 0x30 (reg'd to JAXA!) Rest is just ENCRYPTED! More details: r00t.cz/Sats/Tianhe1

Really nice to see Chang'e-5 decoded again! Low 512Bd BPSK rate helps a lot and Viterbi + RS ECC with proper signal processing does the rest. I will check the decoded data later to see if there's anything interesting in there... so far counted 39 active APIDs.

Looking at the Lucy telemetry APIDs 5 and 6, they use tagged value format (2 byte ID + variable number of bytes for value - seen 2/3/4/8 bytes) to send measurements. APID 5 have fixed format (always sends same values), APID 6 contents are variable. Here are some parsed examples:

Lucy is on HGA now, but also switched to double the rate of modulation (120kbit/s ie. 20kbit/s after FEC) and this makes it not decodeable tonight. Signal is too noisy even for 1/6 TurboCode. Can still see frame structure and it's mostly idling anyway... Recorded by @eb3frm, thx!

Rather weak signal from #JWST (thx eb3frn for recording): > BPSK 8000Bd at +/-40KHz subcarriers, about 20dB below PM carrier > CCSDS k=7 1/2 coded > 2048bit AOS frame with RS ECC > S/C ID: 0xAA (matches SANA "JWST-Fl S-Band1AA") > mostly 0x00 fill frames

Optimized and fine-tuned all processing, from filters to symbol recovery and Viterbi algorithm is starting to work, but SNR is still not enough to get good #JWST frames. Can see VC0 is active with ~20 APIDs. No signs of any hidden text messages, all seems to be fairly dense data.

First look at the Artemis signal on 2216.5MHz: (thx UHF Satcom 🇬🇧 📡 📻 for recording) ▶️ 2 000 000 Bd OQPSK ▶️ 2112 bit CCSDS coded frames = 64 bit sync + 1024 bits of data + 1024 LDPC ECC Mostly idling with short bursts of data. Signal is too weak for LDPC, but will try some tricks...

#Artemis1 uses CCSDS AOS (v2) frames, spacecraft ID is 0x14 and this matches SANA registry: sanaregistry.org/r/spacecraftid… This confirms the signal on 2216.5MHz is really coming from #Artemis1. Fill frames are sent on VC 63 filled with counting up bytes (no ASCII messages this time☹️).

Filtered out all the filler frames and here is the result: #Artemis1 data packets sent on VC1. Besides visible frame and packet counters it's all just random binary noise, so I'm calling it now: Artemis downlink is ENCRYPTED 😭

Nice to see Tianwen-1 decoded again! Pretty good decode with available signal quality. Quite a few missing frames, but I still managed to parse some good frames to get trajectory vectors. Here they are: pastebin.com/cSLPPCFN Rest of telemetry looks same as usual, nothing new...