Proximity can be an issue, yes. We've had to turn down installs where
there are mills within 3-500 feet and another tower isn't available. Ken
says you can hear the blades pass with the PMP alignment tone. You can
also see it in the link test. It will vary quite a bit.
One of the variables is the wind direction. Shooting broadside into the
blades is obviously worse.
Here's that 11GHz path through the wind farm. I believe about 5 miles of
the path is windmills near one site. The closest mill is about a 1/2
mile away. The site is on high ground and our Radiowaves HP3-11 is
mounted only at about 70 feet. Not sure if that helps since I have no
other data to compare to, but I would imagine higher on the tower
placing more of the fresnel zone in the path of the blades would make
things worse.
On 10/11/2017 6:40 AM, Ray Savich via Cambium-users wrote:
On the wind turbines, does it matter how near/far they are to affect
performance? Or do you see issues no matter where they are in the path?
Just thinking if this is something LINKPlanner should account for....
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-----Original Message-----
From: cambium-users-boun...@wispa.org [mailto:cambium-users-boun...@wispa.org]
On Behalf Of George Skorup
Sent: Tuesday, October 10, 2017 9:45 PM
To: cambium-users@wispa.org
Subject: Re: [Cambium-users] cnMaestro speed test
We're running 10MHz channels almost everywhere for the same reason. UBNT
M365 everywhere in the lower 25MHz. And some of it is ours which we're still
slowing getting rid of.
We have wind turbines here in IL as well. Ken Hohhof talks about them a lot. If
you're trying to shoot an SM through 2-3 or more of the turbines/blades, things
get a little weird. I have a 12 mile 11GHz path going through one of the wind
farms and I see the MSE fluctuate quite a bit, maybe 4-5dB. But that was also
an old used set of Trango radios that I'm not too sure about. Has been working
for about a year now though.
On 10/10/2017 3:10 PM, Mike Scott wrote:
What size channels are you operating? We were first set up with 10 Mhz on each
of our 4 PMP450 Cambium AP's.
Cambium says we need to expand to at least 20 Mhz channels to increase
throughput - on the 3.65.
Our 20 meg SM customers are noticing their Internet speed slowing down as daily
traffic increases.
Have a wireless competitor who is on the lower 25 and we're on the upper 25Mhz
and little if any elbow room to expand.
FCC serious about expanding 3.65?
Off topic a tad....
Here in NW Iowa, the wind turbines are taking off big time.
New units are 212 ft high and will be 170 new towers with three 80ft blades
operating in our area we provide rural Internet to.
Anyone expecting or dealing with the same scenarios?
Affect signal, etc. when they operate?
Mike Scott
-----Original Message-----
From: cambium-users-boun...@wispa.org
[mailto:cambium-users-boun...@wispa.org] On Behalf Of George Skorup
Sent: Monday, October 09, 2017 5:03 PM
To: Cambium Networks User Group <cambium-users@wispa.org>
Subject: [Cambium-users] cnMaestro speed test
Scenario 1: customer says they're not getting their speed. We run a link test
and of course it looks fine. We check backhaul links and they look fine.
Scenario 2: cnPilot managed wifi customer says an AP doesn't seem to be working
very good. Internal radio links (if any) or switch ports look fine.
It would be nice to be able to use cnMaestro as a speed test end-point to the
SM, cnPilot AP, etc. PMP or ePMP APs wouldn't be a bad idea either.
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