User's Manual

PRODUCT OVERVIEW
001-7001-100 Version 1 Page 14 of 65 Vanguard 3G User Manual GSM
Version
For installation of ground-plane dependent antennas (main cellular and WiFi antennas), the center of
the metal surface used for mounting is preferable for best omni-directional pattern. For ground-
plane independent antennas (diversity and GPS antennas), installation may be close to the edges of
the surface.
For vehicular installations CalAmp recommends the following antenna positions:
•
Most preferred for all antennas: centerline of roof. For transmitter antenna, it is the ONLY
acceptable position.
•
Less preferred for receiver antenna: trunk lid, providing distance to transmitting antenna is
respected whether lid is opened or closed.
•
Much less preferred, but permissible for receiver antenna: left or right rear fenders, just in
back of rear window
•
Least preferred, but permissible for receiver antenna: left or right front fenders, ahead of
windshield
Preliminary