NavCom SF-2050 Rev.D User Manual
Page 27
SF-2050 User Guide - Rev. D
of the antenna, may lead to internal damage and will
void the equipment warranty.
There should be an unobstructed view of the sky above
a 7-degree
elevation mask
for optimum
GPS
satellite
visibility. Any obstructions above the horizon should be
mapped using a compass and clinometer and used in
satellite prediction software with a recent satellite
almanac
to assess the impact on satellite visibility at that
location. Potential sources of interference should be
avoided where possible. Example interference sources
include overhead power lines, radio transmitters and
nearby electrical equipment.
To take full advantage of the
StarFire
™ service, there
needs to be a clear line of sight between the antenna
and the local Inmarsat satellite. Inmarsat satellites are
geo-synchronized 35,768kms above the Equator
currently at Longitudes 098°West, 025°East, and
109°East.
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