I suspect you actually need the foliage to scatter more signal your way, 
especially if there is something more than just the trees blocking the path.

Also, in the very rare circumstances I have shot 5 GHz through trees, I have 
noticed that it is affected by wind blowing the branches around.  You might 
have better success with a lower frequency.

The fact that the trees are only 1/10 mile from one end is of course not 
optimal.

Any reason you need to be 40 feet up at the house?  You say urban area, is this 
to get over other buildings?  If not, like others have said, experiment with 
going lower to see if it’s multipath off the ground when the leaves are gone.  
Although such experiments are easier with equipment that has tone alignment.  
Maybe a UBNT bargraph would be good enough.


From: Rory Conaway 
Sent: Wednesday, December 23, 2015 2:38 PM
To: af@afmug.com 
Subject: Re: [AFMUG] NLOS, 5ghz, Foliage, and Rain

Directional antennas with good shields, might be another option.

 

Rory

 

From: Af [mailto:af-boun...@afmug.com] On Behalf Of Nate Burke
Sent: Wednesday, December 23, 2015 12:24 PM
To: af@afmug.com
Subject: Re: [AFMUG] NLOS, 5ghz, Foliage, and Rain

 

I haven't tried, but I would doubt it.� Urban Area.� Sitting inside my 
house, I can pickup 5 of my neighbors Cable/DSL Modems.

On 12/23/2015 12:26 PM, Rory Conaway wrote:

  Nate, can you get enough bandwidth through a 10MHz 2.4GHz signal?

  �

  Rory

  �

  From: Af [mailto:af-boun...@afmug.com] On Behalf Of Nate Burke
  Sent: Wednesday, December 23, 2015 11:24 AM
  To: af@afmug.com
  Subject: Re: [AFMUG] NLOS, 5ghz, Foliage, and Rain

  �

  I'm not sure which end is getting multipath, as both ends signal is affected 
equally.� The Foliage is closer to the low end.� Antenna height at the low 
end is at about 40'� I estimate the trees to be about 80' and about 1/10 mile 
out.� 

  On 12/23/2015 12:17 PM, Adam Moffett wrote:

    yeah sometimes 3' up or down makes a world of difference.

    On 12/23/2015 1:15 PM, Kurt Fankhauser wrote:

      Nate,

      �

      Chuck is right. How high are the radios on each end of the link? 
Sometimes you can get around multipath issues by changing the radio heights. 
Most of the time I see improvements by lowering the height on the side that's 
suspected of getting the multipath.

      �

      On Wed, Dec 23, 2015 at 1:10 PM, Chuck McCown <ch...@wbmfg.com> wrote:

      Used to be that folks that used my superstingers reported better 
multipath resistance than yagis at 900 MHz.� I think that a larger capture 
area may have something to do with it.� 

      �

      From: Josh Luthman 

      Sent: Wednesday, December 23, 2015 11:05 AM

      To: af@afmug.com 

      Subject: Re: [AFMUG] NLOS, 5ghz, Foliage, and Rain

      �

      Powerbridge has a wider beamwidth and picks up from "around the 
trees".� I've seen this only at a customer site with a Beam vs 
Nanostation.� Roughly the same signal but the Beam was absolutely worthless 
compared to the Nanostation.

      �

      �

      Josh Luthman
      Office: 937-552-2340
      Direct: 937-552-2343
      1100 Wayne St
      Suite 1337
      Troy, OH 45373

      �

      On Wed, Dec 23, 2015 at 1:02 PM, Nate Burke <n...@blastcomm.com> wrote:

      Is it inherent to the spectrum, or will different radios cope with it 
differently?� I think I remember that being one of the claims to fame of the 
PTP600, was that it handled multipath better. 



      On 12/23/2015 11:59 AM, Chuck McCown wrote:

      Trees were eating up multi path that is now harming your signal.
      -----Original Message----- From: Nate Burke Sent: Wednesday, December 23, 
2015 10:58 AM To: Animal Farm Subject: [AFMUG] NLOS, 5ghz, Foliage, and Rain
      I have a PTP NLOS link which is working the opposite of what I expect, 
and I'm having trouble understanding it.� It is a NLOS link in 5ghz (2.5 mile 
link, Urban area, <1/8 Mile is NLOS). UBNT, 2' dish to a Powerbridge.� Here's 
the part I can't figure out.� Over the summer, when the trees are leafed in, 
the link is rock solid, no signal change, No modulation change. Rain, Shine, 
Night, Day, stays exactly the same.� However, over the winter, when there are 
no leaves, it loses signal, and the signal and modulation fluctuate 
dramatically. Rain will drop the link out.� I have tried re-alignment after 
the foliage has dropped off, and was not able to gain signal, or change the 
pattern at all.� I'm guessing it must be some sort of Multi-path/reflection 
that the foliage is blocking. Would a different radio handle this better than 
the UBNT?� Like if I changed it to EPMP, AF5x, or PTP600 would it act 
differently?� Or is there something else at play that I haven't thought of?

      �

      �

      �

    �

  �

 

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