According to Ubiquiti themselves and the FCC:

This equipment is required to be professionally installed

The device has been designed to operate with the antennas listed below 
and having a maximum gain of 30dBi. Antennas not included in this list 
or having a gain greater than 30dBi are strictly prohibited for use with 
this device. The required antenna impedance is 50 ohms

2x2 Point-To-Point Use

Ubiquiti RD-5G-30

Ubiquiti RP-5G-24

Ubiquiti AMS-5G-20

1x1 Point-To-Point Use

Ubiquiti AG-5G-30

2x2 Point-To-MultiPoint Use

Ubiquiti O-5G-7

Operation is restricted to Point-To-Point use for antenass other than 
the Ubiquiti O-5G-7 listed above.


That means the only legal antenna is a 7db omni for PTMP use.

Scott Piehn wrote:
> Looking for input on which antennas to use
> Was mentioned briefly on one of the lists that using a 16-120 instead of a 
> 19-120 would give better coverage, We have 7 or so 19-120's deployed and they 
> just seem to be very "particular".  seems about 60 degree wide, and 2 mile 
> out sweet spot.  
> 
> Looking based on 
> covering out to 5 miles max (think that is the current limit of NS5M)
> tower is 200 - 250 on a hill.  could be up to 350' above people
> or tower (antenna) is 100' above people
> 360 degree around tower
> 
> 
> Apologies if this is the wrong list, can't keep them straight with what is 
> allowed on which.
> 
> ---------------------------------------------
> Scott Piehn
> 
> 
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