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Section 7 - Antennas
7.3 GPS antenna (AN150)
7.3.1 Description
7.3.2 Dimensions
7.3.3 Gain
7.3.4 Cables
7.3.5 Mounting
location
7.4 GPS/DGPS combination antenna (AN190/AN200)
7.4.1 Description
PAGE 24
For marine applications, mount the AN145 low on the vessel to avoid
extra motion from pitching and rolling. Be sure to install the AN145 lower
than high-power transmitting antennas, such as radar or satcom.
The Northstar AN150 is similar to the AN145; however, it contains an
active preamplifier that can drive up to 100 feet of RG-59U coaxial cable.
It's shipped with 50 feet of RG-59U coaxial cable for connecting the
antenna to the sensor.
FIGURE 5 - Northstar AN150 antenna
12 dB
The length of coaxial cable must be a minimum of 20 feet of RG-59U
coaxial, but not more than 100 feet.
For land-based applications, mount the AN150 near the top of the vehi-
cle, where a clear and unobstructed view of the horizon is available in all
directions.
For marine applications, mount the AN150 low on the vessel to avoid
extra motion from pitching and rolling. Be sure to install the AN150 lower
than high-power transmitting antennas, such as radar or satcom.
Northstar combines the AN195 antenna and the AN150 antenna to form
a single-unit GPS/DGPS combination antenna: the AN190. This "combo"
antenna provides an easier, more attractive installation, and, in many
cases, its loop antenna improves the noise rejection of DGPS signals for
A N T EN N A
O -RING
A D AP TE R
CAPTIVE SCREW
05/01/97 REV H
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