Smc-networks ElliteConnect 2.4GHz/5GHz Manual de usuario descargar pdf (Pagina 48)

Bridge Link Planning

3-4

Note that to avoid any obstruction along the path, the height of

the object must be added to the minimum clearance required for a

clear radio line-of-sight. Consider the following simple example,

illustrated in the figure below.

Total Link

Distance

Max Clearance

for 60% of First

Fresnel Zone at

5.8 GHz

Approximate

Clearance for

Earth

Curvature

Total

Clearance

Required at

Mid-point of

Link

0.25 mile (402 m) 4.5 ft (1.4 m) 0 4.5 ft (1.4 m)

0.5 mile (805 m) 6.4 ft (1.95 m) 0 6.4 ft (1.95 m)

1 mile (1.6 km) 9 ft (2.7 m) 0 9 ft (2.7 m)

2 miles (3.2 km) 12.7 ft (3.9 m) 0 12.7 ft (3.9 m)

3 miles (4.8 km) 15.6 ft (4.8 m) 1.8 ft (0.5 m) 17.4 ft (5.3 m)

4 miles (6.4 km) 18 ft (5.5 m) 3.2 ft (1.0 m) 21.2 ft (6.5 m)

5 miles (8 km) 20 ft (6.1 m) 5 ft (1.5 m) 25 ft (7.6 m)

7 miles (11.3 km) 24 ft (7.3 m) 9.8 ft (3.0 m) 33.8 ft (10.3 m)

9 miles (14.5 km) 27 ft (8.2 m) 16 ft (4.9 m) 43 ft (13.1 m)

12 miles (19.3 km) 31 ft (9.5 m) 29 ft (8.8 m) 60 ft (18.3 m)

15 miles (24.1 km) 35 ft (10.7 m) 45 ft (13.7 m) 80 ft (24.4 m)

17 miles (27.4 km) 37 ft (11.3 m) 58 ft (17.7 m) 95 ft (29 m)

3miles(4.8km)

5.4 m

17 m

20 m

2.4 m

12 m

1.4 m

Visual Line of Sight

Radio Line of Sight

1 2 ... 43 44 45 46 47 48 49 50 51 52 53 ... 321 322

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Smc-networks ElliteConnect 2.4GHz/5GHz Manual de usuario Pagina 48