A dual-band wireless network is one that has two separate kinds of wireless radios. Although many ordinary routers do not support it, a dual-band router supports both 802.11a and 802.11b/g/n. Dual-band routers are capable to transmit on 5 GHz, as well as on 2.4 GHz frequency bands. Thus, a dual-band wireless router has a wider signal range as compared to a single-band router that can only support one signal band.
