Toshiba U400 User Manual page 153

Modulation
Technique
The range of the wireless signal is related to the transmit rate of the
wireless communication device. Communications at a lower transmission
rate may travel larger distances.
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The range of your wireless devices can be affected when the antennas
are placed near metal surfaces and solid high-density materials.
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Range is also impacted due to "obstacles" in the path of the
transmission that may either absorb or reflect the radio signal.
Supported Frequency Sub-bands
Subject to the radio regulations that apply in the countries/regions, your
Wireless LAN card may support a different set of 2.4 GHz channels.
Consult your Authorized Wireless LAN or TOSHIBA Sales office for
information about the radio regulations that apply in the countries/regions.
Wireless IEEE 802.11 Channels Sets (Revision B, G and draft N)
Frequency Range
Channel ID
1
2
3
4
5
6
7
8
9
10
11
12
13
*1 Check if these channels can be used in your country/region.
User's Manual
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DSSS-CCK, DSSS-DQPSK, DSSS-DBPSK
(IEEE 802.11b)
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OFDM-BPSK, OFDM-QPSK, OFDM-
16QAMOFDM-16QAM (IEEE 802.11a/g)
2400-2483.5 MHz
2412
2417
2422
2427
2432
2437
2442
2447
2452
2457
2462
1
2467*
1
2472*
Wireless LAN
C-2