802. 11a 23 nonoverlapping channels, max rate is 54mbps 802. 11b 3 nonoverlapping channels, max rate 11 mbps 802. 11g 3 nonoverlapping channels, max rate 54mbps 802. 11n varies, max rate 540mbps are there overlapping channels for each aswell? if so, how many? i come across a question on the web, where is asks what is the wireless