Answers please…

Is there a technical difference between VSAT and Satellite broadband? In the way, these terms are normally used, that is.

Or is it just a bigger dish + more bandwidth for Satellite broadband?

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Posted on July 5, 2004, in Uncategorized. Bookmark the permalink. 4 Comments.

  1. A definition… 😉

    Hi,

    The Very Small Aperture Terminal (VSAT) refers to a small Ku-Band fixed earth station, usually with antennas between 1 and 3 meters in diameter (according to some it is exactly 1.82.4 meters in diameter) typically used by private networks for receipt of broadcast transmission of data or video as well as interactive communication with a host computer or database for a multitude of applications.

    VSATs can transmit over wide areas by relaying to satellites in geosynchronous orbit, and can handle up to 56Kbps of digital transmission. VSATs that handle the T1 data rate are called TSATs. Anything smaller would be referred as a Ultra Small Aperture Terminal (USAT).

    Note: The above ‘definition’ is my consolidation of the varied definitions offered on the VSAT at the following sites:
    http://www.djaview.com/sat_glos.shtml
    http://www.beaconseek.com/glossary.htm
    http://www.pbs.org/als/satsupport/glossary.htm
    http://www.nsab-sirius.com/list.asp
    http://telemedicine.wramc.amedd.army.mil/Support/GlosTermTMED1.htm
    http://www.novastars.com/vsat/vsat-glossary%20.htm
    http://www.mof.gov.il/micun/gloss2.htm

    Again, according to http://www.acc-net.com/Kahuna/glossaryV.htm, VSAT refers to:
    “One-meter diameter satellite dishes used by remote sites, as opposed to the 3m dishes used by head office, in a satellite-linked network. The central office is able to broadcast or multicast data to the remote sites. In Europe, regulatory restrictions are gradually being lifted to allow two-way transmission. The US does not labor under the same protectionism and so has a flourishing VSAT community that allows the remote site to reply using the same link.”

    Hope this helped… 😉

    Nakul

    • Re: A definition… 😉

      Thanks! That did help. Seems like I checked out a few of the same sites! 🙂

      I guess, it’s just size of the dish and the bandwidth difference then.

      • Re: A definition… 😉

        Let me guess… Google ?

        😉

        Nakul

        PS: Yeah… It does sound something like that… So I don’t think you could use them synonymously…

      • Re: A definition… 😉

        :-)! Yeah, different implications, different cost structures for sure. Just that when I asked a couple of people here, they were very vague. Clear now.

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