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Footprint

Satellites broadcast their signals directionally. Each company tries to focus the beam of their broadcast as narrowly as possible to match the areas in which they expect to serve customers; this is important because of the need to conserve power on a satellite.

The area the beam reaches is called the satellite's footprint. It does not have uniform intensity - think of it like a flashlight beam where it is strongest near the center and fades away from that.

Footprint maps look like topographical contour maps, with lines indicating the strength reaching that point, listed in dBW.

Information and footprint maps for each satellite used by Hughes can be seen here:

SatMex5
SatMex6
G16
G17
AMC3
G3C
AMC9
AMC6
Horizons1
Horizons2
G28
G25


Footprints for satellites used by other providers, such as Ethersat, Starband, etc:
G23
G27
AMC4
AMC5
AMC15
AMC16


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