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Path Loss at 2.4GHz
Free Space Path Loss in dB = 32.4+20Log
Where d = Free space path length in metres
Path length
Loss
(metres)
(dB)
5
46.37
10
52.40
15
55.92
20
58.42
25
60.35
30
61.94
35
63.28
40
64.44
45
65.46
50
66.37
55
67.20
60
67.96
65
68.65
These figures are for free-space path loss only, when estimating signal power at the receiver input, take the sum
of all the gains and then subtract the sum of all the losses.
Mantracourt Electronics Limited T24 Technical Manual
d
10
Path length
Loss
(metres)
(dB)
70
69.30
75
69.90
80
70.46
85
70.98
90
71.48
95
71.95
100
72.40
105
72.82
110
73.22
115
73.61
120
73.98
125
74.33
130
74.67
Path length
Loss
(metres)
(dB)
135
75.00
140
75.32
145
75.62
150
75.92
155
76.20
160
76.48
165
76.74
170
77.00
175
77.26
180
77.50
185
77.74
190
77.97
195
78.20
Path length
Loss
(metres)
(dB)
200
78.42
205
78.63
210
78.84
215
79.04
220
79.24
225
79.44
230
79.63
235
79.82
240
80.00
245
80.18
250
80.35
255
80.53
260
80.69
86
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