RDL-3000 Installation Guidelines
70-00159-01-05 Proprietary Redline Communications © 2011 Page 55 of 66 October 18, 2011
The GPS antenna must have a clear view to approximately ten degrees of the horizon in
all directions. Surrounding obstacles such as trees, buildings, etc should not exceed a
20 degree elevation angle. Blockage due to buildings, mountains, etc. should be less
than 50% of the sky.
RF Interference
To avoid the influence of reflected waves, the antenna must not be installed less than 2
m (~6.5 ft) away from metallic objects having dimensions greater than 0.2 m (~8 in).
Grounded metal structures may block or reduce the signal from a satellite.
To minimize susceptibility to radio interference, the GPS antenna should generally be
located at least 1 m (~3.25 ft) away from antenna systems for any another high
frequency system (e.g., microwave, GSM, CDMA, 3G). Avoid mounting the GPS
antenna within the main beamwidth of any active (radiating) antenna system.
4.1.2 GPS Antenna Kit
The Redline GPS antenna kit is designed to accommodate most installations. This kit
includes the following items:
GPS Antenna
6 m (19.5 ft) LMR-195 50 ohm antenna cable with TNC / M connectors.
Mounting Hardware
Figure 48 - Sync - GPS Antenna Installation Kit
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