Category: Telemetry

Still going strong!

BLUEWALKER-3 telemetry over Sollentuna/Stockholm. Very strong at 437.500 MHz but only one decode with SoundModem. It could/should be more.

Several of the SWSU satellites spotted/heard over Stockholm. Strong downlinks, antenna (13 el Yagi) fixed position Az: 147 El: 7

SWSU-55 #1 & R-390 (SWSU #5)
Callsign: RS10S
Telemetry: 437.050 MHz 1200 bps .AX25 AFSK;
Payload: 437.050 MHz 1200/2400/4800 bps .AX25 AFSK, SSTV, AUDIO, TEXT;

SWSU-55 No. 2 (SWGU No. 6)
Callsign: RS11S
Telemetry: 437.050MHz 1200 bps .AX25 AFSK;
Payload: 437.062 MHz 1200/2400/4800 bps .AX25 AFSK, SSTV, AUDIO, TEXT;

SWSU-55 No. 3 (SWGU No. 7)
Callsign: RS1S
Telemetry: 437.050 MHz 1200 bps .AX25 AFSK;
Payload: 437.075 MHz 1200/2400/4800 bps .AX25 AFSK, SSTV, AUDIO, TEXT;

SWSU-55 No. 4 (SWGU No. 8)
Callsign: RS2S
Telemetry: 437.050 MHz 1200 bps .AX25 AFSK;
Payload: 437.082 MHz 1200/2400/4800 bps .AX25 AFSK, SSTV, AUDIO, TEXT;

SWSU-55 No. 5 (SWGU No. 9)
Callsign: RS3S
Telemetry: 437.050 MHz 1200 bps .AX25 AFSK;
Payload: 437.100 MHz 1200/2400/4800 bps .AX25 AFSK, SSTV, AUDIO, TEXT;

SWSU-55 No. 6 (SWGU No. 10)
Callsign: RS4S
Telemetry: 437.050 MHz 1200 bps .AX25 AFSK;
Payload: 437.087 MHz 1200/2400/4800 bps .AX25 AFSK, SSTV, AUDIO, TEXT;

SWSU-55 №7 & R-390 (SWGU №11)
Callsign: RS5S
Telemetry: 437.050 MHz 1200 bps .AX25 AFSK;
Payload: 437.1125 MHz 1200/2400/4800 bps .AX25 AFSK, SSTV, AUDIO, TEXT;

SWSU-55 No. 8 (SWGU No. 12)
Callsign: RS6S
Telemetry: 437.050 MHz 1200 bps .AX25 AFSK;
Payload: 437.000 MHz 1200/2400/4800 bps .AX25 AFSK, SSTV, AUDIO, TEXT;

Tsiolkovsky-Ryazan 1
Callsign: RS9S
Telemetry: 437.050 MHz 1200 bps .AX25 AFSK;
Payload: 437.025 MHz 1200 bps .AX25 AFSK, SSTV, AUDIO, TEXT;

Tsiolkovsky-Ryazan 2
Callsign: RS12S
Telemetry: 437.050 MHz 1200 bps .AX25 AFSK;
Payload: 437.0125 MHz 1200 bps .AX25 AFSK, SSTV, AUDIO, TEXT;

#Celesta received over Stockholm 2022-07-26 and one packet uploaded to #satnogs

Used hardware and software:

• RX at 436.500 MHz Wide FM BW 8 kHz
• 2 x 13 el LFA X-Yagi (InnovAntenna) horisontal polarization worked best
• AlfaSpid RAS az/el rotor
• LNA Mini-70 from SHF Elektronik
• LMR-400 coax
• Airspy Mini SDR
• SDR-Console v3 with doppler correction of downlink and satellite tracking, rotor control
• PstRotator for rotor control interface between SDR-Console and RAS controller
• VB-Cable: virtual audio cable for piping audio from SDR Console to Soundmodem. Set to 96 kHz and 16 bit.
• HS Soundmodem version INS-2TD v0.01b at 2400bd
• GetKISS+ v 1.3.13 from DK3WN

#greencube received over Stockholm 2022-07-24 with 1KUNS-PF decoder at 2k4.

• Use Wide-FM during receive
• Note that the baudrate can change at any time
• More information see: https://www.s5lab.space/index.php/greencube-tracking/

And look at this amazing MEO orbit!

The use of Dual Channel in SoundModem make it easy to watch and decode two different baudrates in same pass.