Ahh
Thanks.
I had envisioned something like that, but figured the "legs" would be the
leggy things extending out.
You just mount your stuff on the top of that tower, then, I guess.
Not a  lot of them around N GA, but we got lots of pine trees  :-)

Ralph

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Mike Hammett
Sent: Wednesday, January 02, 2008 5:37 PM
To: WISPA General List
Subject: Re: [WISPA] brain cramp, can someone jog my memory?

These are silos:

http://www.plant.uoguelph.ca/performance_recommendations/ofcc/pub/SILO.htg/s
ilo2.gif

The round things are bins and the center is a grain leg aka bucket elevator:

http://www.grainbinsupply.com/images/bins.jpg




-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com


----- Original Message ----- 
From: "ralphlists" <[EMAIL PROTECTED]>
To: "'WISPA General List'" <wireless@wispa.org>
Sent: Wednesday, January 02, 2008 3:56 PM
Subject: RE: [WISPA] brain cramp, can someone jog my memory?


> Thanks.
> I don't understand it, but I did it 3 times. You can do a lot with line of
> sight. 11 miles on 2.4 is never a problem for us when we have it.
> It is hard for me to visualize your terrain or what a grain leg even is, 
> but
> I guess it must be like a silo or something.
>
> Ralph
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
> Behalf Of John Valenti
> Sent: Wednesday, January 02, 2008 4:45 PM
> To: WISPA General List
> Subject: Re: [WISPA] brain cramp, can someone jog my memory?
>
> Wow, thank you!
> (really meant to send that message directly to you, but now the list
> can see your plots, too)
>
> It is flat here, but the trees are the problem for RF.
>
> Do I understand the last plot correctly: that ignoring trees, a
> 2.4GHz signal would work for ~12 miles?  Amazing.
>
> I feel lucky when I can get a 2.4 customer connected at better than
> -80, and they are usually within a mile of a grain leg.
>
>
> On December 29, at 1:54 AM December 29, ralphlists wrote:
>
>> Went ahead and did it.
>> You were right.  Without considering trees, a 26 meter high tower
>> (grain
>> leg) on each end would do it.
>> I used a 200 mw radio and a 23 dBi panel antenna (like the
>> Deliberant 1A23
>> self contained radio).
>> Of course the Alvarion units would be the choice if you had the $$.
>>
>> See the results at
>> http://brightlan.net/test.jpg           Plot over Mapquest
>> http://brightlan.net/test1.jpg           Plot over Google Maps
>> http://brightlan.net/test2.jpg            Your grain leg with a 2.4
>> GHz  5.5
>> dBi omni
>>
>> Just a quick demo of some of the power of Radiomobile
>>
>> BTW- I was amazed at what you flatlanders can do on 2.4!
>>
>
>
>
>
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