There are several manufacturers like IF Engineering, Meca, RF Lamda, and 
such of quality combiner/dividers, but pretty much any RF Design group 
that manufactures quality hybrid stripline dividers would probably work. 
These are typically better than using something like a "T" to 
split/combine signals. What you want is something with low insertion 
loss and at least 20 dB of isolation between ports.

Cameron


Mike wrote:
> Cameron:
>
> Your prowess as an antenna designer is well known.  Define a decent 
> splitter, and where one might find one.  I think that solution would 
> be usable to a wide group on this list.
>
> Mike
>
>
> At 12:05 PM 10/29/2009, you wrote:
>   
>> That is not really an omni. It is three sectors meant to be fed with
>> three different radios. That being said, and in regard to my last post,
>> a back to back array with a couple of 90's fed correctly would yield a
>> pretty nice "omni" pattern that you could get close to 16 dB. Two 18 dB
>> sectors with a decent splitter would yield a 15 dB omni. It would just
>> be pretty "big" as far as antennas go.
>>
>> Cameron
>>
>> Michael Baird wrote:
>>     
>>> What about sectorized omni arrays, any of those out there at 5.8?
>>>
>>> An example would be
>>> http://www.netkrom.com/prod_ant_5.1-5.8ghz_vpol_sector_omni.html
>>>
>>> Just can't find anybody who sells it to get an idea on pricing.
>>>
>>> Regards
>>> Michael Baird
>>>
>>>       
>>>> You won't find a 5 GHz omni at that gain, and if you do, I'd call BS.
>>>> The vertical beamwidth on an 16dB omni antenna at almost any frequency
>>>> will be so flat that the antenna would be practically useless. We make a
>>>> 9-10dB 5.7-5.8 H-pol omni for ourselves, but very few as we just don't
>>>> use that many. If you need H-pol, hit me offlist. Otherwise, there are
>>>> plenty of good 5 GHz 9 and 10 dB V-pol omni's commercially available.
>>>>
>>>> Cameron
>>>>
>>>> Michael Baird wrote:
>>>>
>>>>
>>>>         
>>>>> Tom,
>>>>>
>>>>> This would not be serving any customers, all the locations will be at
>>>>> least 100ft+.
>>>>>
>>>>> Regards
>>>>> Michael Baird
>>>>>
>>>>>
>>>>>
>>>>>           
>>>>>> I'd be cautious about those Pancake shaped OMNI patterns at 16 DB.
>>>>>>
>>>>>> Tom DeReggi
>>>>>> RapidDSL & Wireless, Inc
>>>>>> IntAirNet- Fixed Wireless Broadband
>>>>>>
>>>>>>
>>>>>> ----- Original Message -----
>>>>>> From: "Michael Baird" <m...@tc3net.com>
>>>>>> To: "WISPA General List" <wireless@wispa.org>
>>>>>> Sent: Wednesday, October 28, 2009 11:27 PM
>>>>>> Subject: [WISPA] 5.8 Omni
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>             
>>>>>>> I need a 5.8 Omni to feed some smaller sites via WDS, looking for some
>>>>>>> recommendations was hoping for 16 db but can't seem to find any.
>>>>>>>
>>>>>>> Regards
>>>>>>> Michael Baird
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>               
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