Wireless Communication Range; 192 - Proxim AP-4000 User Manual

Specifications
Radio 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. The range values listed in the Communications
Range Chart are typical distances as calculated by Proxim's development team for FCC-certified products. 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.
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 for FCC-certified products (range may differ for products certified in
other regulatory domains).
802.11b
Range 11 Mbits/s
Open Office 142 m
(466 ft.)
Semi-Open Office 98 m
(322 ft.)
Closed Office 67 m
(220 ft.)
Tx Power (dBm) 21
Receiver Sensitivity -82
(dBm)
Antenna Gain 1 dBi (integrated diversity antenna module; 2.4-2.5 GHz)
Table C-1 802.11b Wireless communication ranges
802.11a
Range 54 Mbits/s
Open Office 46 m
(151 ft.)
Semi-Open 32 m
Office (105 ft.)
Closed Office 22 m
(72 ft.)
Tx Power 16
(dBm)
Receiver -69
Sensitivity
(dBm)
Antenna Gain 0 dBi (integrated diversity antennas; 5.15-5.85 GHz)
Table C-2 802.11a Wireless communication ranges
5.5 Mbits/s 2 Mbits/s
177 m 219 m
(581 ft.) (718 ft.)
122 m 151 m
(400 ft.) (495 ft.)
84 m 104 m
(276 ft.) (341 ft.)
21 21
-85 -88
48 Mbits/s 36 Mbits/s 24 Mbits/s
62 m 82 m 110 m
(203 ft.) (269 ft.) (361 ft.)
42 m 57 m 75 m
(138 ft.) (187 ft.) (246 ft.)
29 m 39 m 52 m
(95 ft.) (128 ft.) (171 ft.)
16 16
-73 -77
1 Mbits/s
272 m
(892 ft.)
187 m
(614 ft.)
129 m
(423 ft.)
21
-91
18 Mbits/s 12 Mbits/s
136 m 169 m
(446 ft.) (554 ft.)
94 m 116 m
(308 ft.) (381 ft.)
64 m 80 m
(210 ft.) (262 ft.)
16 16 16
-81 -84 -87
AP-4000 User Guide
9 Mbits/s 6 Mbits/s
181 m 195 m
(594 ft.) (640 ft.)
125 m 134 m
(410 ft.) (440 ft.)
86 m 92 m
(282 ft.) (302 ft.)
16 16
-88 -89

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