Table of Contents
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Consult your authorized RoamAbout reseller sales office for information about the radio
regulations that apply in your country.
Table A-1: Radio Characteristics
R-F frequency band
Number of selectable
sub-channels
Modulation technique
Spreading
Bit error rate
Nominal Output Power
Range (100 bytes user
data)
Open environment
Semi-open environment
Receiver sensitivity
Signal strength can be affected by closeness to metal surfaces and solid high-density
materials. The ranges listed above provide a general guideline and may vary according to
the actual physical environment where the product is used.
In open environments, there are no physical obstructions between antennas.
In semi-open environments, work space is divided by shoulder-height, hollow wall
elements; antennas are at desktop level.
PC Card Information
2.4 GHz (2400-2483.5 MHz)
North America (FCC)
Europe (ETSI)
France (FR)
Japan (JP)
Other countries that adhere to
FCC
ETSI
Direct sequence spread spectrum (DQPSK, CCK, DBPSK)
11-chip barker sequence
-5
Better than 10
15 dBm
11 Mbit/s
5.5 Mbit/s
160 m
270 m
(525 feet)
(885 feet)
50 m
70 m
(165 feet)
(230 feet)
-82 dBm
-87 dBm
Appendix A
11
13
4
13 (low power cards)
14 (high power cards)
11
13
2 Mbit/s
1 Mbit/s
400 m
550 m
(1300 feet)
(1750 feet)
90 m
115 m
(300 feet)
(375 feet)
-91 dBm
-94 dBm
A-1
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