On Sun, 22 Apr 2012 19:28:20 -0700, Jeff Liebermann wrote:
On Sun, 22 Apr 2012 18:29:28 -0600, "Irv Finkleman" wrote:

4. Is there a way to tell if the glass in my windows
has some property that greatly attenuates signals?

Yes. Read the label on the window. If it says Low-E glass, it's
probably coated with Titanium Nitride to reflect infrared. TiN is
about 40 ohms per square, which is highly lossy at RF. You can test
it with a cell phone. Compare the signal strength on both sides of
the window. If there's a drastic drop in level through the window,
you have Low-E glass. Note that all new construction and remodels in
California have required Low-E glass for the last 10 years or so.
http://802.11junk.com/jeffl/crud/Low-E-titanium-nitide-glass.pdf

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HTH
Jonesy