This means that they are in fixed orbital locations over a single spot on the equator. Precise aiming is, to say the least, critically important.ĭVB-S satellites are in geosynchronous equatorial orbit. In the case of satellite broadcasts, however, the antenna (dish) must be aimed at an object the size of a schoolbus at a distance of 35,000 kilometers. In the case of terrestrial broadcasts, the need for precise aiming is less critical as the transmitters are largely omnidirectional and within short distances. They both share in common a remote transmitter broadcasting a signal through the air to an antenna, with bundles of channels (multiplexes) being transmitted by one or more transponders. If some activity utilizing DVB-S is legal in your locale, bear in mind that it is likely not so in the United States (under whose laws MythTV must exist) and is therefore still unwelcome in all official MythTV support channels.ĭVB-S and DVB-T (Digital Video Broadcast - Terrestrial) share in common many characteristics. In keeping with the philosophy of the (largely US based) MythTV development and user community, no discussion of prohibited activities (civil or criminal) is welcome at any time. The scope of this article is to provide basic understanding of DVB-S technology, dish pointing and peaking, and setup in MythTV.
Digital transmitters beam sets of channels to an area, and they are received by antennas aimed at the transmitter. At its core, DVB-S is a simple mechanism.
DVB stands for Digital Video Broadcast - Satellite.