we have been swapping feed horns for 2 years and are getting the expected results.
On Dec 5, 2014, at 10:46 AM, Chuck McCown via Af <[email protected]> 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 > Sent: Friday, December 05, 2014 9:43 AM > To: [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 > Sent: Friday, December 05, 2014 9:09 AM > To: [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 > > -- > -- > Sam Lambie > Taosnet Wireless Tech. > 575-758-7598 Office > www.Taosnet.com
