On Thu, 27 Sep 2012 08:48:07 -0700, Jeff Liebermann
wrote:

On Thu, 27 Sep 2012 20:11:00 +1000, "John"
wrote:

My questions are : Is putting a reflector adjacent to the antenna on the
road side sufficient to screen off the signal? A follow on from that is
would that reflected signal boost signal levels in the house?.

Optimizing the antenna pattern to best cover the house is possible,
but there are limitations...For a start, a large sheet of aluminum foil
taped to the wall might be useful.

I use an Android phone app called Wifi Analyzer. Among other features
it has a pseudo analog type meter showing your WiFi signal strength
that updates every few seconds so it will give you an idea of your
antenna pattern as you walk around your house.

Also the app can tell you what WiFi channels your neighbors are using.
If possible set your channel as far away as possible from the
strongest signal (likely your next door neighbor) and it may increase
your speed.