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Cooper Bussmann 945U-E Wireless Ethernet Modem & Device Server User Manual
Rev Version 2.14
945U-E Radio Data Throughput
900MHz
Data Rate in Mbps
Signal Strength
20MHz
10MHz
5MHz
2.5MHz
1.25MHz
-72 dBm
22.0
11.0
5.5
2.8
1.4
-75 dBm
20.0
10.0
5.0
2.5
1.3
-81 dBm
17.0
8.5
4.3
2.1
1.1
-84 dBm
11.0
5.5
2.8
1.4
0.7
-88 dBm
9.0
4.5
2.3
1.1
0.6
-91 dBm
6.0
3.0
1.5
0.75
0.38
-90 dBm
5.5
2.8
1.4
0.69
0.34
-91 dBm
4.5
2.3
1.1
0.56
0.28
-92 dBm
3.0
1.5
0.75
0.38
0.19
-91 dBm
2.0
1.0
0.5
0.25
0.13
-93 dBm
1.0
0.50
0.25
0.13
0.06
-95 dBm
0.5
0.25
0.13
0.06
0.03
Throughput and Repeaters
It should also be noted that if using repeaters to extend the range there will be a reduction in throughput for each
repeater hop. The following tables show the drop in throughput for each hop and for each of the channel widths.
Data Throughput Based on Repeater Hops
1 Hop 2 Hop
3 Hop
4 Hop 1 Hop 2 Hop 3 Hop 4 Hop 1 Hop 2 Hop 3 Hop 4 Hop
Signal
20 MHz Channel
10 MHz Channel
5 MHz Channel
-72
22
11
5.5
2.8
11.
5.5
2.8
1.4
5.5
2.8
1.4
.7
-75
20
10
5.
2.5
10.
5.
2.5
1.3
5.
2.5
1.3
.6
-81
17
8.5
4.3
2.1
8.5
4.3
2.1
1.1
4.3
2.1
1.1
.5
-84
11
5.5
2.8
1.4
5.5
2.8
1.4
.7
2.8
1.4
.69
.34
-88
9
4.5
2.3
1.1
4.5
2.3
1.1
.6
2.3
1.1
.56
.28
-91
6
3
1.5
.75
3.
1.5
.75
.38
1.5
.75
.38
.19
-91
4.5
2.25
1.1
.56
2.3
1.1
.56
.28
1.1
.56
.28
.14
-92
3
1.5
.8
.38
1.5
.75
.38
.19
.8
.38
.19
.09
-93
1.
.5
.25
.13
0.5
.25
.13
.06
.3
.13
.06
.03
Data Throughput Based on Repeater Hops
1 Hop 2 Hop
3 Hop
4 Hop 1 Hop 2 Hop 3 Hop 4 Hop
Signal
2.5 MHz Channel
1.25 MHz Channel
-72
2.8
1.4
.69
.34
1.4
.69
.34
.17
-75
2.5
1.3
.63
.31
1.3
.63
.31
.16
-81
2.1
1.1
.53
.27
1.1
.53
.27
.13
-84
1.4
.69
.34
.17
.69
.34
.17
.09
-88
1.1
.56
.28
.14
.56
.28
.14
.07
-91
.75
.38
.19
.09
.38
.19
.09
.05
-91
.56
.28
.14
.07
.28
.14
.07
.04
-92
.38
.19
.09
.05
.19
.09
.05
.02
-93
.13
.06
.03
.02
.06
.03
.02
.01
