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Most C-band communication satellites operate within the frequency band 3.7 to 4.2 GHz for their downlinks and 5.925 to 6.425 GHz for their uplinks. Note that by operating between 3.7 to 4.0 GHz, this C-band overlaps somewhat into the IEEE S-band for radars.

C-band antennas have traditionally been selected for locations that experience regular heavy rain as the signal wave is less affected by rain fade than the Ku and Ka bands.

C-band does however have added complications in cities saturated with Wimax and Wifi transmitters as their transmitted frequencies are close to that of C-band. This results in local interference generated by these other terrestrial transmissions.

Basic hardware requirements to connect a standard terrestrial C-band VSAT to an existing STAR network are:

  • 1.8m parabolic C-band antenna
  • 5W C-band BUC
  • C-band LNB (in range required)
  • Transmit and receive cables
  • A modem compatible with the network chosen (iDirect, Newtec, etc.)

This is the basis for a VSAT operating with a download of up-to 8Mbps and an upload of up-to 512kbps.

For assistance or information on a C-band project please .

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