[HamWAN PSDR] HamWAN via passive reflectors

[Bart Kus]

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 at 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
>>
>> 727-409-1194 - Voice
>> 727-214-2508 - Fax
>> http://bryanfields.net
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