1. UBNT PS2-EXT, Tranzeo 13db/120.
2. Water tower, mounted on catwalk railings.
3. No vertical, 20ft or so horizontal.

Radios set to 23db tx, Antennas are 13db, should be under EIRP since we 
haven't compensated for cable connector loss.

They are all horizontally polarized at the moment.

Regards
Michael Baird
> I would agree with Michael that he's hearing the other AP radios to hot.
> I saw beamwidths and positioning on radius posted.
> Not sure if I missed it in earlier post, or not stated yet, but please 
> clarify....
>
> 1. What brand/model APs and Antennas
> 2. What type structure mounted to
> 3. How much verticle and horizontal seperation between antennas.
>
> Also confirm radios are at legal tx powers, with EIRPs no higher than 36db.
>
> Remember a 120deg sector only means that their is a 3db difference of signal 
> at 120 degrees. Using 3- 120deg antenna will require additional seperation 
> than just reliant on the antenna beamwidth.
> This seperation can be verticle, horizontal, polarity, or physical 
> barriers/shields.
> Note: with proper channel coordination, it is possible to get four 90 degree 
> sector antennas on a tower, even though only 3 non-overlapping channels. 
> (not considering polarity).
> However, I recommend not being locked into a specific channel plan, 
> therefore prefer to gain as much isolation other than channel choice.
> If there is not adequate spacial or physical isolation, its necessary to use 
> a lower beamwidth antenna. For example, if three 90 degree antennas were 
> used there would be less overlap between the three antennas. You'd still 
> cover 360degree, the signal would just be lower at the edges between 
> sectors.
>
>
> Tom DeReggi
> RapidDSL & Wireless, Inc
> IntAirNet- Fixed Wireless Broadband
>
>
> ----- Original Message ----- 
> From: "Ralph" <ralphli...@bsrg.org>
> To: "'WISPA General List'" <wireless@wispa.org>
> Sent: Sunday, May 03, 2009 10:10 AM
> Subject: Re: [WISPA] Sector separation/isolation
>
>
>   
>> Michael
>>
>> What hardware are you using for your APs?
>> Is it something with all 3 radio cards in one enclosure?
>>
>> Ralph
>>
>>
>>
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