Electron : NeonSat-1 & ACS3 : Beginning Of The Swarm : 23 April 2024 21:30 UTC

ACS3 - 401.5 MHz, 2268 MHz ITU
NeonSat-1 = 2242.75 MHz ITU 2nd

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ACS3 NanoAvionics:
UHF

  • Modulation: GFSK2 (MSK).
  • Symbol rate: 2400 baud.
  • Bit encoding: data whitening PN9 sequence.

S-Band

  • Variable transmit bit rate from 100 kbps to 500 kbps
  • GMSK modulation (BT=0.35)
  • Configurable Reed-Solomon and convolutional coding forward error correction

NeonSat-1
KAIST

  • 1MBPS QPSK?
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Livestream

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From 6m50s to launch, the host announced a 97 degree inclination, with an initial 520 km then 1000 km orbits.

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NeonSat-1 S-Band downlink received (faintly!) tracking Object #59587

https://twitter.com/scott23192/status/1783003809356169702

-and-

ACS3 not seen on S-Band, but a flood of 2k4 packets on 401.500 tracking Object #58588 (the obvious match being the one over 1000 Km altitude). The GNU Radio deframer that turned out to produce the frames in my tweet was ‘Light-1’

https://twitter.com/scott23192/status/1783013931771928814

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