Pole mounting
The 27010889 antenna is mounted on a pole. The wall thickness of the pole should be no less than 2.5 mm. A 50 mm diameter pole made of round steel is usually used.
- The antenna must be installed in a place far away from high-voltage power supplies or radio signal interference sources (such as other APs or antennas).
- Do not install antennas in bad weather conditions, for example, during rain, snow, or strong winds.
Fixing the Antenna to the Pole
Carry out the following steps:
- Fix the installation bracket to the antenna using the nut, spring washer, and flat washer.
- Secure the installation bracket, toothed clamp and U-type bolt on the pole. Thread the U-type bolt through the fixing hole and graduated bracket and then tighten screws, nuts, flat washers, and spring washers on both ends of the U-type bolt (not tightly), as shown in the following figure.
- Adjust the mechanical downtilt angle using one of the following two methods.
- Method 1: Adjust the angle by sliding the U-type bolt along the bracket. The pole must be kept vertical.
- Method 2: Use the inclinometer to determine the antenna angle. Then, move the antenna to adjust its angle until the bead in the inclinometer is at the middle. This method provides precise measurements.
- Finally, tighten all nuts. The recommended torque is 12 N m for M6 nuts.
If the required downtilt angle is fixed, you can thread the U-type bolt through the fixing hole and graduated bracket and then tighten the nuts. The pole must be kept vertical.
Installing the Pole and Lightning Rod
Carry out the following steps:
- Weld the lightning rod to the top of the antenna pole.
- Install the antenna pole on a parapet or concrete bed on the roof of the building.
- Use a 40 mm x 4 mm flat piece of steel to connect the antenna pole to an earth mat.
- Secure the outdoor directional antenna to the pole using an antenna support. Keep the pole vertical during the installation.
Take note of the following points when installing an outdoor directional antenna:
- If the roof of the building is surrounded by parapets of no less than 1.2 m high, fix the pole on a parapet with expansion screws, and then fix the outdoor directional antenna on the pole with an antenna support.
- If the roof of the building is surrounded by parapets of less than 1.2 m high, fix one of the installation points of the pole on a parapet and the other installation point to the roof with expansion screws, and then fix the outdoor directional antenna to the pole with an antenna support.
- If there are no parapets around the roof, fix the pole to the ground or a concrete bed with expansion screws and steel wires, and then fix the outdoor directional antenna on the pole with an antenna support.
Figure 12-4 illustrates how an outdoor directional antenna and a pole are installed.
The following figure shows the protection area of a lightning rod. The entire antenna must be within the 45-degree protection area of the lightning rod.
If an antenna is installed on a metal pole such as a steel pole, you do not need to install a lightning rod, as shown on the right in the preceding figure.
Outdoor AP Installation Scenarios
Figure 12-5 shows outdoor AP installation scenarios. The distance between a 2.4 GHz antenna and a 5 GHz antenna must be more than 0.5 m.
