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Figure 9. Antenna Location Examples
No single obstruction should block a large portion (45 degrees of
azimuth) of the view.
The most important obstructions are within 400 meters of the
antenna. Obstructions may include, but are not limited to, towers,
buildings, other construction, trees, and high-voltage power lines.
Attempt to avoid locating the antenna within 30 degrees azimuth
of the transmission direction of any transmitting antenna in the
area, even if the transmitting antenna operates at a different
frequency. A transmitting antenna may cause the GPS antenna to
become overloaded and reduce its reception capabilities.
Water
tower
Tree
Antenna
tower
Building
antenna
Roof
structure
location
Antenna tower
antenna
location
(Note 2)
(Note 1)
Location A
Location B
Notes:
1. Place the antenna high enough on the tower that obstructions are below the mask angle;
mount the antenna more than 1 meter away from the tower, and far below the interference
of the antennas at the top of the tower. Tower mounting is the least desirable location be-
cause of the potential for severe multipath, and difficulty in troubleshooting and mainte-
nance.
2. Place the antenna high enough that the roof structure and tree are below the mask angle,
and the water tower does not block a large portion of the sky.
Summary of Contents for TimeSource 3600
Page 1: ...TimeSource 3600 GPS Primary Reference Source 097 72060 01 Issue 2 ...
Page 4: ...4 TimeSource 3600 This page intentionally left blank ...
Page 16: ...16 TimeSource 3600 This page intentionally left blank ...
Page 121: ...4 Chapter TL1 Reference This chapter provides information for using the TL1 language ...
Page 223: ...6 Chapter Specifications This chapter provides equipment specifications ...
Page 247: ...Index ...