[amsat-bb] Re: Sat Dishes and P3E Q's

jmfranke jmfranke at cox.net
Wed Aug 11 11:23:50 PDT 2010


In general, dish antennas should be used at frequencies that have 
wavelengths shorter than one tenth the diameter or width of the dish and the 
dish must have a suitable surface smoothness and accuracy.  Without knowing 
more, I suspect the two dishes will work for the 2.4 GHz through 10 GHz 
bands.  Of course, you will have to design and build suitable feeds for the 
dishes.  One of the best references is: 

John  WA4WDL

From: "Ron Overdrive" <ronoverdrive at tehfurry.com>
Sent: Wednesday, August 11, 2010 1:33 PM
To: <amsat-bb at amsat.org>
Subject: [amsat-bb]  Sat Dishes and P3E Q's

> I am curious how things are coming along with Phase 3 Express (P3E) as the
> current official websites don't tell me much. The last bit of updates seem
> to be from 2005 with an expected launch date of 2007 - 2008 which was 2 - 
> 3
> years ago. Since there's no info about it being active I'm guessing P3E
> hasn't be launched yet.
> The reason I'm asking is because I came across 2 Dish Network dishes that 
> a
> friend had sitting in his junk room that he acquired from the previous 
> owner
> of his home. One is a smaller dish labeled Dish 500 which I'm guessing is 
> a
> Ku-Band dish and a larger one labeled Dish Plus which I'm assuming is a
> C-band dish. As you probably have guessed I want to use these for AMSAT 
> work
> and I don't know much about parabolic dishes so all I have are guesses for
> what bands they work on so if anyone can point me in the right direction 
> to
> figure this out please do.
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