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Mounting the GPS 128 antenna
The antenna should be mounted in a location that has
a clear, unobstructed view of the sky in all directions to
ensure the best reception. Avoid mounting the antenna
where it will be shaded by the boats superstructure, a
radome antenna, or mast. Sailboat users should avoid
mounting the antenna high on the mast to prevent inac-
curate speed readings caused by excessive heeling. Most
marine VHF and loran antennas will not seriously
degrade the GPS antennas reception. Never paint the
antenna or clean it with harsh solvents.
The GARMIN antenna screws directly onto any stan-
dard 1” x 14-thread antenna mount. If you need to raise
the antenna to avoid shading, try using a 1” x 14-thread
extension mast available at most marine dealers.
To install the GPS antenna:
1. Screw the antenna directly onto the 1” x 14-thread
mount.
2. Route the cable to the mounting location of the
display unit. Use the appropriate tie-wraps,
escutcheon plates and sealant to secure the cable
along the route and through any bulkhead or deck.
3. Once the GPS 128 has been installed, connect the
cable to the antenna connector on the back of the
display unit. Make sure that you turn the antenna
cable connector 1/4 turn clockwise to lock the
cable into
place.
57
Appendix b
Installation
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BETTER
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126/128 Manual (new) 6/15/98 9:52 AM Page 57