Originally Posted by DuckieTigger
A dual band router is not going to make your connection any faster - a device has to pick one or the other band. But channel conflicts are less likely on the 5ghz band, as not very many devices even support 5ghz. Found that out after getting a dual band - and only my bluray player is even capable of 5 ghz.
Not only that but 5GHz has a shorter range than 2.4GHz.
In addition to trying other channels, you may want to try a range extender/repeater if distance poses a signal problem. These work very well with excellent customer support in the U.S. I use the SR10000.
Amped Wireless Repeaters