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Site Preparation 1-3
Determining the Antenna Locations
Table 1-1: Distances and Line of Sight Clearance (FCC)
Table 1-2: Distances and Line of Sight Clearance ETSI
1
The Yagi antenna must be connected to an Access Point configured with the Hi-Gain matched RoamAbout PC Card.
Data
Rate
Mbit/s
14 dBi Yagi to 14 dBi Yagi 14 dBi Yagi to 7 dBi Omni 7 dBi Omni to
Vehicle-Mount
Distance Line of
Sight
Clearance
Distance Line of
Sight
Clearance
Distance Line of
Sight
Clearance
11 5.6 km
(3.5 mi)
9.8 m
(33 ft)
2.5 km
(1.5 mi)
6.3 m
(21 ft)
0.8 km
(0.5 mi)
3.4 m
(11.2 ft)
5.5 7.9 km
(4.9 mi)
12.1 m
(40 ft)
3.5 km
(2.1 mi)
7.5 m
(25 ft)
1.1 km
(0.7 mi)
4.1 m
(13.5 ft)
2 11.2 km
(6.9 mi)
15.4 m
(51 ft)
5 km
(3.1 mi)
9.1 m
(30 ft)
2 km
(1.2 mi)
5.6 m
(18.4 ft)
1 15.8 km
(9.8 mi)
20.3 m
(67 ft)
7.1 km
(4.4 mi)
11.3 m
(37 ft)
2.5 km
(1.5 mi)
6.3 m
(21 ft)
Data
Rate
Mbit/s
14 dBi Yagi to 14 dBi Yagi
1
14 dBi Yagi
1
to 7 dBi Omni
7 dBi Omni to
Vehicle-Mount
Distance Line of
Sight
Clearance
Distance Line of
Sight
Clearance
Distance Line of
Sight
Clearance
11 2.5 km
(1.5 mi)
6.3 m
(21 ft)
1.1 km
(0.7 mi)
4.1 m
(14 ft)
0.8 km
(0.5 mi)
3.4 m
(11.2 ft)
5.5 3.5 km
(2.1 mi)
7.5 m
(25 ft)
1.6 km
(1 mi)
4.9 m
(16 ft)
1.1 km
(0.7 mi)
4.1 m
(13.5 ft)
2 5 km
(3.1 mi)
9.1 m
(30 ft)
2.2 km
(1.4 mi)
5.9 m
(20 ft)
2 km
(1.2 mi)
5.6 m
(18.4 ft)
1 7.1 km
(4.4 mi)
11.3 m
(37 ft)
3.2 km
(2 mi)
7.1 m
(24 ft)
2.5 km
(1.5 mi)
6.3 m
(21 ft)