MBX-4 User Guide
27
MGL-4 Combined GPS/Beacon Antenna
Install the MGL-4 combined GPS/beacon antenna in a location with a
clear, unobstructed view of the sky.
The MGL-4 uses a 1-14-UNS thread for mounting. A magnetic mount
with integral 5/8
th
inch threaded shaft is provided with the MBX-4. For
best performance, mount this antenna so that the center of the black
gasket is at least 3 inches (8 centimeters) above any ferrous material.
Routing and Securing the Antenna Cable
Hemisphere GPS beacon antennas require a 50 omega impendance
antenna extension cable such as RG-58U (up to a maximum of 492 feet
(150 meters) in length) for proper operation. in the case of the combined
MGL-4, cable losses at the higher GPS frequency (1.575 GHz) restrict the
cable length to approximately 32.8 feet (10 meters) (for RG-58U cable),
depending on GPS receiver requirements. For more information on
cable length, please contact your Hemisphere GPS dealer or
Hemisphere GPS technical support.
Note: Mount this antenna with a clear, unobstructed view of the
sky and 3 inches (8 centimeters) away from any metal surface.
Warning!
Antennas threaded onto a mount should be tightened only by
hand. Do not use tools to install the MGL-4 as this may cause
damage to the antenna. Damage caused by over tightening is
not covered under warranty.
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