3.0 AUTO GLIDE ELECTRICAL INSTALLATION
10
AUTO GLIDE
Rev 03-10-11
3.4 GPS (Stand Alone) Antenna Installation (Continued)
Figure 3.4.1 Surface Mounting the GPS Antenna with No Obstructions Above the GPS Module
The GPS module can be installed on any flat surface that is at least 3-1/2” (90mm) wide. If you are mounting
the antenna on an external surface, Lenco Marine recommends that the antenna have a clear, unobstructed
view of the sky.
CLEAR, UNOBSTRUCTED
VIEW OF THE SKY
GPS ANTENNA/
RECEIVER
NO METAL (ONLY FIBERGLASS)
OBSTRUCTING THE VIEW OF THE SKY
GPS ANTENNA/
RECEIVER
Figure 3.4.2 Mounting the GPS Antenna With ONLY FIBERGLASS Obstructing The View of the Sky
If you cannot mount the GPS antenna to a flat surface with an unobstructed view of the sky, the Lowrance LGC-
4000 can be mounted under a fiberglass ceiling. However, you must make sure that there are no metal pipes or
plates which obstruct the view of the sky. The Lowrance GPS module can receive GPS Satellite signals through
two layers of fiberglass, but will not function properly if metal objects are in between the GPS module and the
view of the sky.
Here is an example of mounting the Lowrance LGC-4000 GPS Antenna to a flat surface under a fiberglass hard
top. The ceiling directly above the GPS antenna can only be fiberglass. If any of the aluminum bars supporting
the fiberglass hard top are directly over the antenna, the GPS module will not be able to receive clear satellite
signals.
Here is an example of mounting the Lowrance LGC-4000 GPS Antenna to a flat surface under two (2) layers of
fiberglass (Layer 1 = console, Layer 2 = hard top). Both ceilings directly above the GPS antenna can only be
fiberglass. If any of the aluminum bars supporting the fiberglass hard top are directly over the antenna, the GPS
module will not be able to receive clear satellite signals.
NO METAL (TWO LAYERS OF FIBERGLASS)
OBSTRUCTING THE VIEW OF THE SKY
GPS ANTENNA/
RECEIVER
Note: If you install the GPS Antenna/Receiver under a fiberglass ceiling, Lenco Marine recommends that you
verify that the Auto Glide is receiving GPS data from the GPS antenna before you physically attach the antenna
to the boat. Please review section 4.3 of this manual to learn how to verify that the Auto Glide is receiving GPS
data from the GPS antenna.
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