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faac-u

PlutoSDR PWM over ASK sender

Notes

  • Encoder Carrier Frequency: ~70kHz
  • RF Carrier Frequency: ~333.85 MHz
  • Bit ONE encoding: 0->1 (33% DC)
  • Bit ZERO encoding: 0->1 (66% DC)
  • Maybe Decoder needs 3 packets to start decoding
  • In the OnAir sequence, there is a "start bit" of type ONE (33% DC)
  • Between two consecutive sequences there are 10ms of idle
  • A sequence is transmitted in ~12ms (including start bit)
  • DUT PWR: -50dbFS

snippet

sdr._ctrl.find_channel('altvoltage0',True).attrs['powerdown'].value = '1'

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PlutoSDR PWM over ASK sender

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