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IEEE 802.11b (Wi-Fi) uses DSSS, using 22 MHz of bandwidth (passband)
to transmit data with speeds of up to 11 Mb/sec. A Wi-Fi system can
use any of 13 22-MHz-wide sub-channels across the allocated 83.5 MHz
of the 2.4 GHz frequency band, however most equipment commonly
available in Australia is designed for the 11 channel American market.
22 MHz wide Direct Sequence Spread Spectrum, 5 MHz channel spacing.
Channel MHz
1 2412
2 2417
3 2422
4 2427
5 2432
6 2437
7 2442
8 2447
9 2452
10 2457
11 2462
12 2467
13 2472
As such, there are only three non-overlapping channels: 1, 7 & 11.
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