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