Motorola SC 4812ET RF Hardware Installation Manual page 58

Site Preparation
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58
– continued
– Place the RGPS Head where RF obstructions of the sky are
minimized. The "sky" includes everything to within ten degrees
(10°) of the horizon in all directions. RF obstructions includes
buildings, towers, snow, foliage and debris.
– Separate the RGPS Head from radiating sources. Excessive RF
energy can degrade the RGPS head's ability to observe the GPS
satellites. The RGPS head receives on the GPS L1 frequency of
1575.42 MHz and has filters incorporated within to minimize the
effects of potential RF interference, however, strong radiators can
overwhelm the filters, thus degrading the units reception capability.
– The RGPS Head is rated for ambient air temperatures from –40 Deg
C to +50 Deg C, and has ratings for Humidty, Shock, Waterproof,
UV Light Resistance, Vibrations, Salt, Fog, ESD, EMI, and
Altitude.
– The RGPS system will support up to 2000 feet (610 m) of overall
cable length from the RGPS Head to the last connected base station.
If a long cable run needs to be broken into pieces, minimize the
number of breaks in the cable.
SC 4812ET RF and Power Cabinet Hardware Installation Manual
TM
Apr 2001
DRAFT