Symmetricom TimeSource 3100 User Guide

Chapter 2 Engineering & Ordering
Antenna Location Guidelines
34 TimeSource 3100 User’s Guide 097-72020-01 Revision K – December 2005
Figure 2-1. Locating the GPS Antenna
Due to the geometry of the GPS satellite orbits, more satellites are visible in the
direction of the equator than the poles. If possible, place the antenna so that the
antenna has a clear view toward the equator (toward the south in the northern
hemisphere, or toward the north in the southern hemisphere). Up to 60 degrees of
arc, centered at the pole, may be blocked with little effect in the temperate latitudes.
This note is less applicable in latitudes nearer the equator.
The total of obstructions above the mask angle should not obscure more than 25
percent of the total field of view (90 degrees of azimuth) as shown in the examples
in Figure 2-2.

Symmetricom TimeSource 3100 Specifications

General

Brand	Symmetricom
Model	TimeSource 3100
Category	GPS
Language	English