On 6/4/12 10:24 PM, Hal Murray wrote:
Does window glass have significant attenuation at GPS L1?
What if it's a big window on a modern green office building and has some sort
of coating/content to reduce IR transmission?
Google found an (expensive) paper from IEEE where the abstract said:
The low-E coatings are known to attenuate WIFI. WIFI is probably a worse case
than GPS, but the availability of the gear makes experimenting easy. I think
they are sputtered metal either on the glass or on a thin film applied to the
glass. Southwall Technology in Palo Alto pioneered or at least
On Mon, Jun 4, 2012 at 11:26 PM, li...@lazygranch.com wrote:
The low-E coatings are known to attenuate WIFI. WIFI is probably a worse
case than GPS, but the availability of the gear makes experimenting easy. I
think they are sputtered metal either on the glass or on a thin film
applied to the
On 6/5/12 9:14 AM, Chris Albertson wrote:
On Mon, Jun 4, 2012 at 11:26 PM,li...@lazygranch.com wrote:
The low-E coatings are known to attenuate WIFI. WIFI is probably a worse
case than GPS, but the availability of the gear makes experimenting easy. I
think they are sputtered metal either on
You can buy windows (or coverings) designed to block RF. The most common
version blocks cell freqs/wifi/etc. Generally used with a matching wall
covering to keep your secret sauce from getting out.
While you're at it, add the window vibrator to give the laser microphones an
earful.
Does window glass have significant attenuation at GPS L1?
What if it's a big window on a modern green office building and has some sort
of coating/content to reduce IR transmission?
Google found an (expensive) paper from IEEE where the abstract said:
At average, about 30 dB attenuation is
Part of the problem of using a window would remain even if the glass where
removed. This is the antenna can not see the entire sky from a window.
You can do ok if the window faces South (assume you are in the Northern
Hemisphere) With a good timing GPS receiver you only need to see a very
small
