Garmin GPSMAP 292 Owner's Manual - Page 93
Installing the GPSMAP 292/298 External GPS Antenna, Mounting the GPS Antenna
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Installing the GPSMAP 292/298 External GPS Antenna The GPSMAP 292/298 with external antenna must be properly installed according to the following instructions to get the best possible performance. To complete the external antenna installation, you need the appropriate fasteners and a 1" x 14-thread marine antenna mount available at most marine dealers. The GPSMAP 292/298 with internal antennas do not require this installation. To acquire satellites, install the unit with a clear view of the sky. Mounting the GPS Antenna (External Antenna Units Only) 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 is shaded by the boat's superstructure, a radome antenna, or mast. Sailboat users should avoid mounting the antenna high on the mast to prevent inaccurate speed readings caused by excessive heeling. Most marine VHF and LORAN antennas should not seriously degrade the GPS antenna's reception. Never paint the antenna or clean it with harsh solvents. APPENDIX > INSTALLING THE GPSMAP 292/298 EXTERNAL GPS ANTENNA Suggested locations for mounting the external antenna. The Garmin antenna screws directly onto any standard 1" x 14thread 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. NOTE: It is possible to route the coaxial cable either through, or outside the antenna mount. It is possible to remove the BNC connector on the coaxial cable and the coaxial cable shortened to ease installation, however, doing so voids the antenna warranty. If the BNC connector is removed, it must be replaced with a new solder-on or crimp BNC connector. GPSMAP 292/298 Owner's Manual 87