WLAN Frequencies

Standard WLAN IEEE802.11b cards transmit in the 2.4 GHz band, the so called ISM band (Industry, Science and Medical band).

Channel	Frequency
1	2.412 GHz
2	2.417 GHz
3	2.422 GHz
4	2.427 GHz
5	2.432 GHz
6	2.437 GHz
7	2.442 GHz
8	2.447 GHz
9	2.452 GHz
10	2.457 GHz
11	2.462 GHz
12	2.467 GHz
13	2.472 GHz

2.4 GHz band runs from 2.4000 GHz to 2.4835 GHz.

IEEE 802.11b (11 Mb/s)
20 dB bandwith is 16 MHz