12 S&C Instruction Sheet 1074-510
Operation
Table 4. Antenna/Cable Loss Examples with LMR-600 Cable
①
Antenna Gain
Length/Loss
ERP
+8.2 dBi
90 feet (27 m)/2.3 dB loss
+36.0 dBm
+10.2 dBi
170 feet (52 m)/4.3 dB loss
+36.0 dBm
+12.1 dBi
245 feet (75 m)/6.1 dB loss
+36.0 dBm
①
Assuming 1-watt output power from the SpeedNet ME radio.
Table 5. Antenna Cable Loss Examples with LMR-900 Cable
①
Antenna Gain
Length/Loss
ERP
+8.2 dBi
135 feet (41 m)/2.3 dB loss
+35.9 dBm
+10.2 dBi
250 feet (76 m)/4.3 dB loss
+36.0 dBm
+12.1 dBi
310 feet (94 m)/5.3 dB loss
+35.9 dBm
①
Assuming 1-watt output power from the SpeedNet ME radio.
Table 6. Attenuation Chart
Nominal Attenuation Frequency in MHz dB/100 feet
Cable Type
10 MHz
30 MHz
50 MHz
150 MHz
220 MHz
450 MHz
900 MHz
1.2 GHz
2.4 GHz
100 Series
2.3
3.9
5.1
8.9
10.9
15.8
22.8
26.7
38.9
195 Series
1.1
2.0
2.5
4.4
5.4
7.8
11.1
12.9
18.6
240 Series
0.8
1.3
1.7
3.0
3.7
5.3
7.6
8.8
12.7
400 Series
0.4
0.7
0.9
1.5
1.9
2.7
3.9
4.5
6.6
600 Series
0.2
0.4
0.5
1.0
1.2
1.7
2.5
2.9
4.3
LMR-400-UF
0.5
0.8
1.1
1.8
2.2
3.3
4.7
5.5
7.9
RG142/U
RG213/U
0.6
1.2
1.5
2.8
x
5.2
7.3
x
x
RG214/U
0.6
0.9
1.3
2.3
x
4.5
7.3
x
x
RG223/U
1.2
2.0
2.8
5.0
x
9.8
13.4
x
x
RG316/U
RG393/U
RG58A/U
1.5
2.6
3.3
6.8
x
12.6
21.0
x
x
RG8/U
(CXP1318FX)
0.5
0.8
1.1
1.8
2.2
3.3
4.7
5.5
7.9
RG8X-Mini
1.0
2.0
2.3
4.7
x
8.6
13.0
x
x
If using a different type of cable, verify cable loss prior to installation. See Table 6.
