All I have used is the Laird OEM antenna as well. The null-fill is nice.
It is definitely a -6dB 90/-3dB 65. I have found that it rolls off
sharply beyond 90.
Cambium claims >32dB F/B ratio. I know Mark @ Amplex has mentioned this
before, short range SMs (like 1/2 mile or so) seem to get crappy
downlink SNR. They are apparently hearing the opposite sector on the
same frequency which points to the F/B ratio. I have seen this as well.
I actually put up a post on the Cambium community about it last night.
On 2/23/2016 12:24 PM, Kurt Fankhauser wrote:
Sean,
Really? I was told the 90 degree cambium sector was actually a 65
degree sector so you using it at 120 degrees? I would assume there is
at least a 6db difference between the center of the beamwidth and the
outer edges at 120 degrees.
On Tue, Feb 23, 2016 at 12:50 PM, Sean Heskett <[email protected]
<mailto:[email protected]>> wrote:
I've only used the cambium one...works great.
You can actually use it as a 120* sector if you need to, you just
loose 3db more than at the 90* point.
On Tuesday, February 23, 2016, Kurt Fankhauser
<[email protected] <mailto:[email protected]>> wrote:
Has anyone used all three of these antenna choices for
PMP450/3.65ghz ?
- KP 120 degree 3.65ghz slant sector
- Cambium Stock 90 degree 3.65ghz slant sector
- Alpha Wireless 120 degree 3.65ghz slant sector
And what was your thoughts on all of them? Did any perform
worse or better than the other?
