Range-- What are you using for an antenna?
At the moment it's a single wire (AWG 24) approx 6.5" long.

The booklet says: "Alternatively, the pin receptacle can be removed and an alternative antenna connection can be made. For example a coaxial wire can be connected to the antenna pad on the front side of the pcb and ground pad on the back side of the pcb."

Early days yet but would one of these be any better?

http://www.maplin.co.uk/Module.aspx?ModuleNo=35648

Dave