Adtran TRC582TM1 Manual Do Utilizador
TRACER 2xT1 User’s Manual
61280003L2-1B
Section 2 Installation
16
Preliminary
Path Loss
The free space path loss is given by
Loss(dB) = 96.6 + 20 log
10
f + 20log
10
D
where D is distance in miles
f is operating frequency in GHz
A tabulation of various path loss is given below.
Path Availability
The availability of a path can be expressed by:
availability = (1 - C x T x 2.5 x 10
-6
x f x D
3
x 10-F
/10
) x 100%
where C is the climate factor
T is the terrain factor
f is the frequency in GHz
D is the path length in miles
F is the fade margin in dB
Climate factors are given below.
Climate
Climate
Factor
Very Dry ............................................................
1
/
8
Temperate ..........................................................
1
/
4
Humid ................................................................
1
/
2
Terrain factors are listed below.
Terrain
Terrain
Factor
Smooth ............................................................... 4
Average .............................................................. 1
Mountainous .....................................................
Average .............................................................. 1
Mountainous .....................................................
1
/
4
2.4 GHz
Link Distance Path Loss
(in miles)
(in dB)
1 ................. 104
2 ................. 110
3 ................. 114
4 ................. 116
5 ................. 118
6 ................. 120
7 ................. 121
8 ................. 122
9 ................. 123
10 ................ 124
11 ................ 125
12 ................ 126
5.8 GHz
Link Distance Path Loss
(in miles)
(in dB)
1 ................ 112
2 ................ 118
3 ................ 121
4 ................ 124
5 ................ 126
6 ................ 127
7 ................ 129
8 ................ 130
9 ................ 131
10 ............... 132
11 ............... 133
12 ............... 133
5.8 GHz
Link Distance Path Loss
(in miles)
(in dB)
13 ............... 134
14 ............... 135
15 ............... 135
16 ............... 136
17 ............... 136
18 ............... 137
19 ............... 137
20 ............... 138
21 ............... 138
22 ............... 139
23 ............... 139
24 ............... 139
2.4 GHz
Link Distance Path Loss
(in miles)
(in dB)
13 ................ 126
14 ................ 127
15 ................ 128
16 ................ 128
17 ................ 129
18 ................ 129
19 ................ 129
20 ................ 130
21 ................ 130
22 ................ 131
23 ................ 131
24 ................ 132