User Manual

User Reference and Installation Manual 3-9
MDS 5800 II
Path Length (Km) 15
TX Tower Height (m) 30
RX Tower Height (m) 20
Frequency (MHz) 5800
Calculated Fresnel Clearance Ratio 0.05
MDS 5800 II Link Planner: Fresnel Zone Clearance
Distance
from TX
(Km)
Optical LOS
Height (m)
1st Fresnel
Zone
Radius (m)
1st Fresnel
Zone Height
(m)
Radio LOS (60%
Fresnel Clearance)
Zone Height (m)
Earth
Curvature
1
(m)
Obstruction
Height (m)
Total Earth
Terrain
Height (m)
Fresnel
Clearance
Ratio
0.0 30.0 0.0 30.0 30.0 0.0 0.0 0.0
-
0.4 29.8 4.3 25.4 27.1 0.3 0.0 0.3 6.77
0.8 29.5 6.1 23.4 25.9 0.6 0.0 0.6 4.76
1.1 29.3 7.3 21.9 24.9 0.9 0.0 0.9
3.87
1.5 29.0 8.3 20.7 24.0 1.2 0.0 1.2 3.33
1.9 28.8 9.2 19.5 23.2 1.4 0.0 1.4 2.97
2.3 28.5 9.9 18.6 22.5 1.7 0.0 1.7
2.70
2.6 28.3 10.6 17.7 21.9 1.9 20.0 21.9 0.60
3.0 28.0 11.1 16.9 21.3 2.1 10.0 12.1 1.43
3.4 27.8 11.6 16.1 20.8 2.3
10.0
12.3
1.33
3.8 27.5 12.0 15.5 20.3 2.5 23.0 25.5 0.17
4.1 27.3 12.4 14.8 19.8 2.6 24.0 26.6 0.05
4.5 27.0 12.7 14.3 19.4 2.8 0.0 2.8
1.90
4.9 26.8 13.0 13.7 18.9 2.9 0.0 2.9 1.83
5.3 26.5 13.3 13.2 18.5 3.0 0.0 3.0 1.77
5.6 26.3 13.5 12.8 18.2 3.1 0.0 3.1
1.72
6.0 26.0 13.6 12.4 17.8 3.2 5.0 8.2 1.31
6.4 25.8 13.8 12.0 17.5 3.2 0.0 3.2 1.64
6.8 25.5 13.8 11.7 17.2 3.3 0.0 3.3
1.61
7.1 25.3 13.9 11.4 16.9 3.3 0.0 3.3 1.58
7.5 25.0 13.9 11.1 16.7 3.3 0.0 3.3 1.56
7.9 24.8 13.9 10.9 16.4 3.3 0.0 3.3
1.54
8.3 24.5 13.8 10.7 16.2 3.3 0.0 3.3 1.53
8.6 24.3 13.8 10.5 16.0 3.2 0.0 3.2 1.53
9.0 24.0 13.6 10.4 15.8 3.2 0.0 3.2
1.53
9.4 23.8 13.5 10.3 15.7 3.1 0.0 3.1 1.53
9.8 23.5 13.3 10.2 15.5 3.0 7.0 10.0 1.02
10.1 23.3 13.0 10.2 15.4 2.9 0.0 2.9
1.56
10.5 23.0 12.7 10.3 15.4 2.8 0.0 2.8 1.59
10.9 22.8 12.4 10.3 15.3 2.6 0.0 2.6 1.62
11.3 22.5 12.0 10.5 15.3 2.5 0.0 2.5
1.66
11.6 22.3 11.6 10.6 15.3 2.3 0.0 2.3 1.72
12.0 22.0 11.1 10.9 15.3 2.1 0.0 2.1 1.79
12.4 21.8 10.6 11.2 15.4 1.9 0.0 1.9
1.88
12.8 21.5 9.9 11.6 15.5 1.7 0.0 1.7 1.99
13.1 21.3 9.2 12.0 15.7 1.4 0.0 1.4
2.15
13.5 21.0 8.3 12.7 16.0 1.2 0.0 1.2
2.37
13.9 20.8 7.3 13.4 16.4 0.9 0.0 0.9 2.71
14.3 20.5 6.1 14.4 16.9 0.6 0.0 0.6
3.28
14.6 20.3 4.3 15.9 17.6 0.3 0.0 0.3
4.59
15.0 20.0 0.0 20.0 20.0 0.0 0.0 0.0 -
Note1: Earth Curvature is based on a spherical Earth model with a nominal radius of 6371Km and a typical K-factor of 1.33.
0
5
10
15
20
25
30
35
0.0 0.8 1.5 2.3 3.0 3.8 4.5 5.3 6.0 6.8 7.5 8.3 9.0 9.8
10.5 11.3 12.0 12.8 13.5 14.3 15.0
Distance (Km)
Height (m)
Optical LOS 1st Fresnel Zone Radio LOS Earth Curvature Obstructions