BCWARN's WiLan hardware has 30 possible channels it can use.
There are 3 non-overlapping channels with 30.0 MHz of frequency seperation. Those channels are 5, 20, and 35.
There are 4 non-overlapping channels with 20.0 MHz of frequency seperation. Those channels are 5, 15, 25, and 25.
Frequencies range from 2.410 Ghz to 2.470 Ghz. Channel steps are 0.002 Ghz. Total possible channels is 30
See Also: http://strategis.ic.gc.ca/epic/internet/insmt-gst.nsf/en/sf01226e.html#sche1 RIC-2
See Also: http://www.rac.ca/service/13cmrev1.htm RAC DRAFT 2300 MHz Plan
See Also: http://www.arrl.org/FandES/field/regulations/bandplan.html#2300 ARRL Band Plan
See Also: http://www.arrl.org/hsmm/HSMM_802.11.html On Amateur Radio Use of IEEE 802.11b Radio Local Area Networks
See Also: http://standards.ieee.org/getieee802/download/802.11b-1999.pdf IEEE 802.11b Standards Publication (Page 49) - (2.412 to 2.484 Ghz)