[OLSR-users] multiple radios with sector antennas

aaron (spam-protected)
Tue Apr 5 20:14:21 CEST 2005


interference !! this is IMHO a very bad idea!

you can try but you will not be happy with the results.

just my experience,
a.

On Tue, Apr 05, 2005 at 12:13:27PM -0500, Andrew Hodel wrote:
> I am wondering if anyone has ever used olsrd ad-hoc or any 802.11 ad-hoc 
> network in a multiple radio sector antenna environment.
> 
> I was thinking of using 3 radios and 3 120 degree sector panel antennas 
> to get 20db of gain from an HNA node.
> 
> http://www.hyperlinktech.com/web/hg2420p_120.php is one of the sector 
> antennas I was thinking of using.
> 
> The only problem I can see from this is of course interference, as they 
> are all on the same channel.  Could using iptables and blocking by MAC 
> address be a possible solution?
> 
> You can't get 20db of gain from any omni, and using amplifiers is just 
> something I don't like to do, it makes a noisy signal.
> 
> The antenna gain patterns are on that page, it seems you could also fix 
> the problem by having each antenna on a circle with a 10ft radius or so, 
> which means each antenna is 20.93 ft apart on the circumference of the 
> circle.
> 
> 
> Please comment,
> Andrew Hodel
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> 

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