Enterasys RoamAbout Site Preparation And Installation Manual page 15

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