Using wireless networking analysis software I can see that virtually everybody in the neighbourhood is running an 802.11n router or access point (about 12 are visible from my laptop!) but everybody is being knocked down to 802.11g 54mb/s -presumably by interference from all the others.
To get over this I am thinking of getting two Buffalo WLAE-AG300N Bridge / Access Points to create a 5GHz network around the house, one in the loft (next to my router) in access point mode the other on the ground floor in "bridge and repeat" mode that will take the signal from the AP and rebroadcast it.
That is about 18 feet apart and through two wooden floors with plaster ceilings underneath.
I have heard that 5GHz does not cope well with obstructions so I am nervous that I would spend £80 and end up with no improvement again.
Does anybody have experience of using 5GHz WiFi? Is it as sensitive to obstructions as is sometimes stated?
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