3Com 3CRWEASYA73 Network Router User Manual


 
2-2
DATA RATES
Using the 5.0 GHz integrated antenna, two WL-575 bridges can operate over a
range of up to 15.4 km (9.6 miles) or provide a high-speed connection of
54
Mbps (108 Mbps in turbo mode). However, the maximum data rate for a link
decreases as the operating range increases. A 15.4 km link can only operate up to
6 Mbps, whereas a 108 Mbps connection is limited to a range of 1.3 km.
When you are planning each wireless bridge link, take into account the maximum
distance and data rates for the various antenna options. A summary for 5.0 GHz
(802.11a) antennas is provided in the following table.
.
Distances Achieved Using 17 dBi Integrated Antennas
Data Rate Distance
6 Mbps 15.4 km
9 Mbps 14.7 km
12 Mbps 14 km
18 Mbps 12.8 km
24 Mbps 11.1 km
36 Mbps 6.5 km
48 Mbps 2.9 km
54 Mbps 1.8 km
12 Mbps Turbo 13.4 km
18 Mbps Turbo 12.8 km
24 Mbps Turbo 12.2 km
36 Mbps Turbo 11.1 km
48 Mbps Turbo 8.2 km
72 Mbps Turbo 4.6 km
96 Mbps Turbo 2.1 km
108 Mbps Turbo 1.3 km
Distances provided in this table are an estimate for a typical
deployment and may be reduced by local regulatory limits.
For accurate distances, you need to calculate the power link
budget for your specific environment.