[134203] in North American Network Operators' Group
Re: 5.7/5.8 GHz 802.11n dual polarity MIMO through office building
daemon@ATHENA.MIT.EDU (Justin M. Streiner)
Tue Dec 28 23:57:28 2010
Date: Tue, 28 Dec 2010 23:56:45 -0500 (EST)
From: "Justin M. Streiner" <streiner@cluebyfour.org>
To: nanog@nanog.org
In-Reply-To: <AANLkTi=cV+MFCdzQUMtBpBerdPiyNFG8622YVFasqMB7@mail.gmail.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Tue, 28 Dec 2010, Anonymous List User wrote:
> For architectural and building management reasons we cannot mount our
> antennas in a rooftop or outdoor location at either end. The distance
> between two buildings is 1.5 km, and the fresnel zone is clear. Antennas
> need to be located indoors at both ends and will be placed on small speaker
> stand tripod pointing at windows. This has been done successfully before
> with 2.4 GHz 802.11g equipment and a link from an office in the Westin to a
> nearby apartment building, but I am unsure of what effect glass will have on
> 5 GHz. Has anyone tried this?
A lot depends on the windows themselves. Windows in some modern buildings
have a thin metallic coating that can have a big impact on the ability to
pass an RF signal.
jms
