NorthStar Navigation GM1708 961XD - Manual (Page 27)

SECTION TWO - Installation
961 INSTALLATION MANUAL Revision A Page 17
Figure 6: GPS-only antenna (AN150)
Wiring the AN150 antenna
Supplied with the antenna is a 50-foot length of RG-59 coaxial cable for
use with either the GPS-only AN150 “active” antenna (as well as the GPS/
DGPS AN205-P “combo” antenna).
Mounting the AN150 antenna
Tools needed:
• flat-bladed screwdriver
• knife blade
• Amphenol crimp tools
One TNC connector is pre-attached to the antenna-end of the RG-59
coaxial cable. Connection to the antenna itself involves the following
steps:
1. Remove the antenna base by loosening the four captive screws in the
base.
2. Screw the base onto the top of the antenna mount (standard 1"-14
marine thread).
CAUTION!
The GPS-only antenna must be used with a minimum of 20
feet of cable, and no more than 100 feet. Any unused length
must be coiled up; do not cut it to less than 20 feet!
O -RING
A D AP T E R
A N T E N N A
3.00
.91
1.82
CAPTIVE SCREW