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Avoid installing the GPS near other transmitting and receiving devices. The GPS should be
at least 3 feet (.9 meters) from other transmitting devices.
The GPS antenna should be installed within 45 degrees to the lightning rod.
3.7.3 Install Omnidirectional Antenna
Following are guidelines for installing an omnidirectional antenna at the cell site.
The mounting pole diameter must be between 1.4 to 2 inches (35 to 50 millimeters).
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Typically, operators use a 2-inch/50-mm round, steel-made pole.
The top of the pole and the clamp beneath the antenna should be at the same level once
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the omni is installed on the pole.
For optimal performance, ensure the omni antenna is precisely vertical.
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The top of the antenna should fall within the 45-degree safety angle towards the
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lightning rod.
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There should be no metal objects within 3.3 feet (1 meter) of the omni antenna. Use an
independent lightning rod high enough to keep all antennas under its protection cover.
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Ensure the antenna is high enough to meet the coverage requirements specified in the
operator's network design plan.
If it is not possible to install an independent lightning rod due to environmental limitations,
ensure that the pole supporting the lightning rod is at least 3.3 feet (1 meter) away from the
omni antenna. Follow standard transport procedures to hoist the antenna to the target
location.
Once the antenna and eNB are installed securely in the proper position, verify grounding and
lightning protection.
3.7.4 Install Directional Antenna on Tower or Pole
Following are guidelines for installing a directional antenna at the cell site.
First, assemble the antenna and the upper and lower racks, as shown in Figure 3-18.
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Follow standard transport procedures to hoist the antenna to the target location.
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Using expansion screws, fix the support pole vertically to the ground (or concrete
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pillars on a rooftop), and fasten it with steel wires.
Mount the antenna assembly onto the pole using the installation racks.
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Once the antenna and eNB are installed securely in the proper position, complete
weatherproofing and verify grounding and lightning protection are satisfactory.
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