HiDes DVB-T modulator

Astra 2021.08.09

PT100 is a DVB-T modulator for 4 frequencies by HiDes

PT100 DVB-T modulator


  • 4 modulators on the board
  • Frequency range 50~950MHz step size 1KHz
  • Modulation - 64QAM/16QAM/QPSK
  • Signal/Noise: 45dB
  • RF Output Level -8 dBm (100 dBuV)

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Driver could be downloaded from official site

After installation find the modulators number using the command:

find "/dev" -name "it950x*"

In the output of the command, we will get the numbers of the modulators:


it950x1 - where 1 is the modulator number

Astra settings

Prepare MPTS for modulator. In the MPTS NIT settings, configure transponder options:

MPTS NIT Settings

In the output setting, specify the type it950x and adapter number: it950x://#adapter=0 (0 - modulator number)

Additional output options

Additional options could be added to the output address:

  • gain=N - signal level in range from 0 to 100
  • fec=1/2 - Astra 2023.08.16 FEC coding ratio. Values: 1/2, 2/3, 3/4, 5/6, 7/8, none