So what do these actually do? If you have a signal that fades within 7 or 8 metres through plasterboard walls, then surely an aerial with higher gain would improve the signal? Not so, it seems. Used with a TP-Link TD-WD8960N Router (judgement reserved on this item at the moment) in place of the standard aerials, there was no noticeable difference in signal strength measured around the house.
I have a couple of TP-Link switches, and they are great value for money, so I had high hopes of these.
They do look impressive, sticking up 10 1/2 inches when fitted, so that might appeal to some. Personally, I am not convinced, so am going to try the Powerline extender units next.