I was using an HPol 30dBi Poynting grid antenna along with a Metal 5SHPn modem. Both the cell sites are just HPol, as Nigel mentioned. Did not try switching polarity. I'm not aware of the polarity rotation from a single reflection. Do you have any docs that explain the physics behind that? I'm not seeing why that would need to be true. --Bart On 6/6/2015 6:16 PM, Nigel Vander Houwen wrote:
Very cool stuff Bart. Those are some very promising results I think for a number of people.
Bryan, Both of the sectors he referenced are horizontally polarized (we don’t have dual pol sectors installed there yet). I don’t know what orientation he had his client antenna, or if it was a dual pol client. It would be interesting to hear.
Nigel
On Jun 6, 2015, at 18:09, Bryan Fields <Bryan@bryanfields.net> wrote:
On 6/6/15 9:03 PM, Bart Kus wrote:
We pointed the dish at a random hillside across the water from Luther Burbank, and picked up Capitol Park @ up to -73dBm. Bouncing off this hillside we got 3.5Mbit download and 5Mbit upload speeds to the Internet.
I guess the lesson here is: If you don't have a direct path to a HamWAN cell site, perhaps you can try playing with some indirect reflected paths to get connected! Very cool!
Bart, are these dual pol links or vertical only? If they are vertical only, did you try switching to horizontal at your client end?
Generally a single reflection will cause a 90 degree shift in polarization. Some times over multiple ones you can have some fun things happen that you can't model.
Also in most cases a passive reflector is only going to be useful if one station is very close to it with the other being further away.
73's W9CR -- Bryan Fields
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