Specifications

Radio Characteristics
A-2
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.
Table A-2 lists the ranges for the RoamAbout PC Card based on the environment and
transmit rate.
Table A-2: Radio Ranges
Range 11 Mbit/s 5.5 Mbit/s 2 Mbit/s 1 Mbit/s
Open environment 160 m
(525 feet)
270 m
(885 feet)
400 m
(1300 feet)
550 m
(1750 feet)
Semi-open environment 50 m
(165 feet)
70 m
(230 feet)
90 m
(300 feet)
115 m
(375 feet)