I have reset the router and the problem seems to have cleared. Many thanks for your help.

Many thanks thats what I suspected, it seems like the exterior aerial has little use I think the problem is in the router settings somewhere though, I have 3 bars lit on the display but just get the...

Model : Hardware Version : Firmware Version : ISP : I have a new 6400, when I connect the XPOL 0001 exterior aerial it makes no difference as if it is not connected. The supplier says I need to...