Wi Lan Inc EB02 Benutzerhandbuch

Appendix A: Planning Your Wireless Link

122

 AWE 120-58 Installation & Configuration Guide

For the AWE 120-58, the absolute minimum clearance above obstructions requirements are as follows (in 
meters):

 

 @ 5.8 GHz

Some example clearance requirements for 5.8 GHz links follow. 

Note: There is also a correction factor to compensate for curvature of the earth. This correction factor is 

not required when the correction value is negligible < 10 km.

Antennas must be installed professionally to ensure that the antenna operates properly and follows accepted 
safety, electrical, grounding and civil engineering standards.

Ensure the following conditions.

•

Dipole antennas are oriented vertically (point up).

•

Antennas for the system have the same polarity (vertical, horizontal or circular).

•

Connectors attaching the coaxial cable to the antenna are properly weatherproofed.

•

A drip loop is formed at the building entrance to prevent water flowing down the coaxial cable and 
entering the installation building.

•

The coaxial cable is secured to the supporting structure at one meter intervals to prevent wind 
damage and frost loading problems.

•

The antenna is firmly attached to the mast to prevent it from falling, yet has some flexibility so you 
can move the antenna to fine-tune its position.

•

The coaxial cable is connected to the antenna and to the Antenna port on both sides of the link (base 
and remote stations).

•

The antennas are grounded properly.

0.5

1.6

0.5

6.5

1

2.2

1

9.3

2

3.2

2

13.3

3

3.9

3

16.7

5

5.2

5

22.6

8

6.9

8

31.3

10

8.0

10

37.3

15

10.8

15

54.3

2.2

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