Is it possible to use both WiFi bands at the same time on the 2830n-plus? I have been very impressed with my 2820n, apart from its lack of 5.8GHz, but also have one device that will not work on that band - and it's not the kind the capability could be added to. I am thinking of getting a 2830n-plus, but am wondering if I need an extra AP to achieve what I am trying to do.

If I do get the 2830, the 2820 will be transferred elsewhere in the family, to replace a less reliable router elsewhere.