Sunday, March 8, 2020

2400 symb/sec bursts with 256 symbol long frames

Interesting PSK-modulated burst signals were picked up recently on a KiwiSDR in the UK:
  • 2400 symb/sec
  • 8-PSK modulation
  • The 1st 6 frames show a substructure of known symbols not present in the following frames

abs(IQ) in 1280 sample frames (12 kHz sampling rate) 

arg(symb) in 256 symbol frames (2400 symb/sec)