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4.3 dBm-Watts-Volts Conversion Chart
Table 4-4 is provided as a convenience for determining the equivalent voltage or wattage of an RF power
expressed in dBm.
Table 4-4. dBm-Watts-Volts Conversion—for 50 Ohm Systems
dBm V
+53
100.0 200W
+50
70.7
+49
64.0
+48
58.0
+47
50.0
+46
44.5
+45
40.0
+44
32.5
+43
32.0
+42
28.0
+41
26.2
+40
22.5
+39
20.0
+38
18.0
+37
16.0
+36
14.1
+35
12.5
+34
11.5
+33
10.0
+32
9.0
+31
8.0
+30
7.10
+29
6.40
+28
5.80
+27
5.00
+26
4.45
+25
4.00
+24
3.55
+23
3.20
+22
2.80
+21
2.52
+20
2.25
+19
2.00
+18
1.80
+17
1.60
+16
1.41
+15
1.25
+14
1.15
+13
1.00
+12
.90
+11
.80
+10
.71
+9
.64
+8
.58
+7
.500
+6
.445
+5
.400
+4
.355
+3
.320
+2
.280
+1
.252
4.4 Performance Notes
The following is a list of points that are useful for understanding the performance of the radio in your instal-
lation.
4.4.1 Wireless Bridge
The transceiver acts as a bridge. If any radio in your network is connected to a large LAN, such as may be
found in a large office complex, there may be undesired multicast/broadcast traffic over the air. As a bridge,
the radios transmit this type of frame.
05-2806A01, Rev. L
Po
dBm V
Po
0
.225
1.0mW
100W
-1
.200
.80mW
80W
-2
.180
.64mW
64W
-3
.160
.50mW
50W
-4
.141
.40mW
40W
-5
.125
.32mW
32W
-6
.115
.25mW
25W
-7
.100
.20mW
20W
-8
.090
.16mW
16W
-9
.080
.125mW
12.5W
-10
.071
.10mW
10W
-11
.064
8W
-12
.058
6.4W
-13
.050
5W
-14
.045
4W
-15
.040
3.2W
-16
.0355
2.5W
2W
dBm mV
Po
1.6W
-17
31.5
1.25W
-18
28.5
1.0W
-19
25.1
800mW
-20
22.5
.01mW
640mW
-21
20.0
500mW
-22
17.9
400mW
-23
15.9
320mW
-24
14.1
250mW
-25
12.8
200mW
-26
11.5
160mW
-27
10.0
125mW
-28
8.9
100mW
-29
8.0
80mW
-30
7.1
.001mW
64mW
-31
6.25
50mW
-32
5.8
40mW
-33
5.0
32mW
-34
4.5
25mW
-35
4.0
20mW
-36
3.5
16mW
-37
3.2
12.5mW
-38
2.85
10mW
-39
2.5
8mW
-40
2.25
.1µW
6.4mW
-41
2.0
5mW
-42
1.8
4mW
-43
1.6
3.2mW
-44
1.4
2.5mW
-45
1.25
2.0mW
-46
1.18
1.6mW
-47
1.00
1.25mW
-48
0.90
MDS iNET Series Reference Manual
dBm mV
Po
dBm µV
-49
0.80
-98
-50
0.71
.01µW
-99
-51
0.64
-100
-52
0.57
-101
-53
0.50
-102
-54
0.45
-103
-55
0.40
-104
-56
0.351
-105
-57
0.32
-106
-58
0.286
-59
0.251
dBm nV
-60
0.225 .001µW
-107
-61
0.200
-108
-62
0.180
-109
-63
0.160
-110
-64
0.141
-111
-112
dBm µV
Po
-113
-65
128
-114
-66
115
-115
-67
100
-116
-68
90
-117
-69
80
-118
-70
71
.1nW
-119
-71
65
-120
-72
58
-121
-73
50
-122
-74
45
-123
-75
40
-124
-76
35
-125
-77
32
-126
-78
29
-127
-79
25
-128
-80
22.5
.01nW
-129
-81
20.0
-130
-82
18.0
-131
-83
16.0
-132
-84
11.1
-133
-85
12.9
-134
-86
11.5
-135
-87
10.0
-136
-88
9.0
-137
-89
8.0
-138
-90
7.1
.001nW
-139
-91
6.1
-140
-92
5.75
-93
5.0
-94
4.5
-95
4.0
-96
3.51
-97
3.2
Po
2.9
2.51
2.25
.1pW
2.0
1.8
1.6
1.41
1.27
1.18
Po
1000
900
800
710
.01pW
640
580
500
450
400
355
325
285
251
225
.001pW
200
180
160
141
128
117
100
90
80
.1ƒW
71
61
58
50
45
40
35
33
29
25
23
.01ƒW
117
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