We will all have to walk out to infinity to check that.
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bp
<part {dash} 15 {at} SkylineBroadbandService {dot} com>
On 12/5/2014 8:46 AM, Chuck McCown via Af wrote:
I think I am correct, at infinity all parabolas are the same with the
two sides becoming parallel (it is a limit). But not totally sure if,
at infinity, different focal length parabola are scale models of
others. That may take some thinking. Is a parabola a self scaling curve?
*From:* Chuck McCown <mailto:[email protected]>
*Sent:* Friday, December 05, 2014 9:43 AM
*To:* [email protected] <mailto:[email protected]>
*Subject:* Re: [AFMUG] 11 ghz dish, can one put an 18ghz feed horn in it?
Depends on the manufacturer of the dish.
Parabolic curves are all the same. Just zoomed in or out on the
curve. They all use a different part of the curve. And they all
have different focal points.
*From:* Sam Lambie via Af <mailto:[email protected]>
*Sent:* Friday, December 05, 2014 9:09 AM
*To:* [email protected] <mailto:[email protected]>
*Subject:* [AFMUG] 11 ghz dish, can one put an 18ghz feed horn in it?
I was shipped the wrong antennas (2 foot) for an 18ghz link, I didn't
notice that it was an 11 ghz antenna set until I tried to get the
radios to link up. Best I could get was -65. It drove me crazy trying
to see if I was on a side lobe for half an hour until it got dark and
I gave up. Right before I left, I glanced at the label and saw that
the antenna was for an 11 ghz link.
So the question is, are the parabolics on the antenna the same and the
feed horn different? Can it be swapped out to get me the -38 that I
want, or are we going to have to uninstall the whole shebang?
Sam
--
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*Sam Lambie*
Taosnet Wireless Tech.
575-758-7598 Office
www.Taosnet.com <http://www.newmex.com>
