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How It Works

XM Satellite Radio uses a broadcast center in Washington D.C. to uplink programming to their two satellites (Plate 25). The satellites, which are positioned in geostationary orbit over 22,000 miles above the Earth, then transmit the signal across the entire United States and use an extensive repeater network on the ground in order to ensure complete coverage to cars and homes subscribing to the service (Figure 26-1).

Figure 26-1. How the XM Satellite Radio works (Source: XM Satellite Radio).



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