Yeah, I've been fighting the -6db beam width in trying to figure them out.
I actually had the same thought earlier to dump the large sectors and
replace with the smaller 120's.  I'm easily getting 10+ mile range out of
them, they're smaller so I can put them on a single mast and they behave.  

Might just be the ticket.

Thanks.

Bob-


-----Original Message-----
From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On
Behalf Of Mike Hammett
Sent: Monday, March 29, 2010 6:28 PM
To: WISPA General List
Subject: Re: [WISPA] Ubiquiti Sector Tilt angle

Well, UBNT's degrees are misleading.  They are -6 dB beamwidths instead 
of -3 dB, like most manufacturers use.  I believe a UBNT 90 performs 
similarly to a regular 120, but I can't be certain.

The UBNT engineer said he saw minimal need for the high gain sectors and 
that most people should use the mid gain ones.


-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com



--------------------------------------------------
From: "Robert West" <robert.w...@just-micro.com>
Sent: Monday, March 29, 2010 5:22 PM
To: "'WISPA General List'" <wireless@wispa.org>
Subject: Re: [WISPA] Ubiquiti Sector Tilt angle

> I have one where I'm hitting it at 12 miles with a -77 but the noise floor
> hovers at around a -87 most of the time.  But that's using a 23dbi cpe.
> Haven't tried the UBNT 27dbi there, may make it all good.
>
> Would 90's be a better choice?  I have only one AP using the smaller UBNT
> 90's but haven't tried the large 90's, only the 120's.
>
> Bob-
>
>
> -----Original Message-----
> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On
> Behalf Of Mike Hammett
> Sent: Monday, March 29, 2010 3:54 PM
> To: WISPA General List
> Subject: Re: [WISPA] Ubiquiti Sector Tilt angle
>
> I wouldn't even try to get a signal 15 miles away on a 120.  :-p
>
>
> -----
> Mike Hammett
> Intelligent Computing Solutions
> http://www.ics-il.com
>
>
>
> --------------------------------------------------
> From: "Robert West" <robert.w...@just-micro.com>
> Sent: Monday, March 29, 2010 1:29 PM
> To: "'WISPA General List'" <wireless@wispa.org>
> Subject: Re: [WISPA] Ubiquiti Sector Tilt angle
>
>> I was compensating for the electrical tilt but just one degree was
>> throwing
>> it way, way off.  Trying to get a usable signal 15 miles out, maybe less,
>> and that slightest fraction of a degree would change it considerably. 
>> But
>> after reading Tom and Mercy's posts it's all making sense to 
>> me...........
>> A little more work.
>>
>> Bob-
>>
>>
>> -----Original Message-----
>> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On
>> Behalf Of Faisal Imtiaz
>> Sent: Monday, March 29, 2010 2:22 PM
>> To: WISPA General List
>> Subject: Re: [WISPA] Ubiquiti Sector Tilt angle
>>
>> ..... Technically speaking.. if you are not concerned about dealing with
>> 'near' customers.... less than 1 or 2 miles... then you can pretty much
>> leave the sectors at '0' tilt.. and you have coverage to the horizon....
>>
>> The built-in electrical down-tilt typically throws folks off...... only
>> becomes a factor if you are needing to down tilt for near customers..
>>
>> Faisal.
>>
>> On 3/29/2010 1:36 PM, Robert West wrote:
>>> I'm having a heck of a time with the large UBNT sectors getting the tilt
>>> angle to jive.  With the smaller sectors, they behave perfectly and go
>> right
>>> where the calculations say they will however, with the larger ones,
>> nothing
>>> I do other than have someone 10 miles out with a CPE check levels while 
>>> I
>>> tilt up and down seems to be good.  I REALLY don't want to have to do
>>> that
>>> with all of them...
>>>
>>>
>>>
>>> Anyone having any success or insight with the proper tilt of these
>>> things?
>>> Using the 120 degree 5GHz flavors.
>>>
>>>
>>>
>>> Thanks!
>>>
>>>
>>>
>>> Robert West
>>>
>>> Just Micro Digital Services Inc.
>>>
>>> 740-335-7020
>>>
>>>
>>>
>>> Logo5
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
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