Wireless Communication Range - Proxim Orinoco AP-2500 User Manual

Specifications

Wireless Communication Range

The range of the wireless signal is related to the composition of objects in the radio wave path, and the transmit rate of
the wireless communication. Communications at a lower transmit range may travel longer distances.
NOTE: The range values listed in the Communications Range Chart are typical distances as measured at the
development laboratories. These values provide a rule of thumb and may vary according to the actual radio
conditions at the location where the product is used.
The range of your wireless devices can be affected when the antennas are placed near metal surfaces and solid
high-density materials. Ranges for outdoor antenna installations are related to type of outdoor antennas used, and
length of antenna cables. Range is also impacted due to "obstacles" in the signal path of the radio that may either
absorb or reflect the radio signal.
In Open Office environments, antennas can "see" each other (no physical obstructions between them). In Semi-open
Office environments, workspace is divided by shoulder-height, hollow wall elements; antennas are at desktop level. In
a Closed Office environment, solid walls and other obstructions may affect signal strength.
The following tables show typical range values for various environments.
Range 11 Mbps
Open Office 160 m
(525 ft.)
Semi-Open Office 50 m
(165 ft.)
Closed Office 25 m
(80 ft.)
Receiver Sensitivity -82 dBm
Delay Spread 65 ns
(at FER of <1%)
Table E-3 802.11b Wireless communication ranges
Range 54 Mbps
Open Office 19 m
(62 ft.)
Semi-Open Office 17 m
(56 ft.)
Closed Office 15 m
(49 ft.)
Receiver Sensitivity -65 dBm
Table E-4 802.11a Wireless communication ranges
5.5 Mbps 2 Mbps 1 Mbps
270 m 400 m 550 m
(885 ft.) (1300 ft.) (1750 ft.)
70 m 90 m 115 m
(230 ft.) (300 ft.) (375 ft.)
35 m 40 m 50 m
(115 ft.) (130 ft.) (165 ft.)
-87 dBm -91 dBm -94 dBm
225 ns 400 ns 500 ns
48 Mbps 36 Mbps 24 Mbps
35 m 74 m 112 m
(115 ft.) (243 ft.) (367 ft.)
29 m 34 m 49 m
(95 ft.) (111 ft.) (161 ft.)
24 m 27 m 36 m
(79 ft.) (88 ft.) (118 ft.)
-69 dBm -73 dBm -77 dBm
18 Mbps 12 Mbps 9 Mbps
153 m 189 m 232 m
(502 ft.) (620 ft.) (761 ft.)
63 m 76 m 90 m
(206 ft.) (249 ft.) (295 ft.)
45 m 52 m 60 m
(147 ft.) (170 ft.) (197 ft.)
-80 dBm -82 dBm -84 dBm
6 Mbps
258 m
(846 ft.)
99 m
(325 ft.)
64 m
(210 ft.)
-85 dBm
273