IBM 19K4543 - Manual (Page 30)

A-4 High-Rate Wireless LAN PC Card User’s Guide
1 In an open office environment, antennas can "see" each other. There are no physical
obstructions between them.
2
In a semi-open office environment, work space is divided by shoulder-height, hollow
wall elements. Antennas are at desktop level.
3 In a closed office environment, work space is separated by floor-to-ceiling brick walls.
The range of the wireless signal is related to the transmit rate of the wireless
communication. Communications at lower transmit rate may travel larger distances.
Note: The range values listed in the table are typical distances as measured at the IBM
High-Rate Wireless LAN laboratories. These values may vary according to the
actual radio conditions at the location where the High-Rate Wireless LAN product
will be installed.
• 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.
Supported frequesncy sub-bands
Subject to the radio regulations that apply in your country, your High-Rate Wireless LAN
PC Card may support a different set of 2.4 GHz channels. Consult your Authorized High-
Rate Wireless LAN reseller or IBM Sales office for information about the radio
regulations that apply in your country.
The following table lists the Hihg-Rate Wireless LAN IEEE 802.11 chanel sets in the 2400
to 2500 MHz range.
Channel ID FCC ETSI FR JP
1 2412 2112 n/a 2412
2 2417 2417 n/a 2417
3 2422 2422 n/a 2422
4 2427 2427 n/a 2427
5 2432 2432 n/a 2432
6 2437 2437 n/a 2437
7 2442 2442 n/a 2442
8 2447 2447 n/a 2447
9 2452 2452 n/a 2452
10 2457 2457 2457 2457