Installing Gps Antenna; Requirements For Installation Position - Huawei iSiteC BTS3601C Installation Manual

Installation Manual
iSiteC BTS3601C CDMA Base Station

4.2 Installing GPS Antenna

4.2.1 Requirements for Installation Position

The installation position of GPS antenna should have a broad vision without high
buildings around, and as far as possible from the compact accessory buildings on the
building-top. The available area of the plane for installing GPS antenna should be as
big as possible. And the antenna should be vertically erected with a visual angle
greater than 90°. See Figure 4-1.
(1) Surrounding buildings or other obstacles
Figure 4-1 Antenna installation position
Note that the antenna should not be close-range radiated by the front of the main
l
lobe of the mobile communication antenna. In addition, it should not be located at
the range of the microwave signal from microwave antenna, not below the high
voltage cable, nor under the intense radiation of TV launching tower.
Considering lightning protection, try the best to install the antenna at the center of
l
the building-top. Do not install it on the stub wall around the building-top. DO not
install it at the corner of the building-top as the corner has the greatest possibility
of being stricken by lightning.
The antenna should be installed at the place where there is special lightning
l
arrester or similar facilities such as telecommunication tower around. And the
antenna should be located within the valid protection range of the lightning
arrester. That is, the included angle between the erect direction and the direction
from the antenna RX connector to the lightning arrester or to the tower-top should
be less than 30°. If there is no tower or lightning arrester around, the special
lightning arrester should be installed to meet the design requirements for lightning
protection of the building. The horizontal distance from the lightning arrester to the
antenna should be 2m to 3m preferably. And the lightning arrester should be 0.5m
higher than that of GPS antenna receive connector.
4 Installing Satellite Synchronization Antenna and Feeder System
(2)
≥ 90°
(1)
(1)
(2) GPS antenna
4-2
Hardware Installation