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Re: 2.4Ghz satellites and signals ?




Hello Roger,

Thanks for posting this! I've got some tower work to do, and have been 
waiting to get my grid dish
finished and tested before tilting the tower over. I've been waiting for 
AO-51's S-band transmitter to
use as a test signal.

However, the geostationary and Molniya birds should be much easier to track! 
I'd especially like to
find one that is similar in ERP to AO-40 or P3E.

I received this BBQ type dish a few years ago, and screened it with aluminum 
screen the night before
AO-40 died. It did not have a feed or feed support, so I'll have to 
experiment with a few different
designs.

The dish looks like the Andrew grid dishes, possibly model 26? I haven't 
computed the focal length, or
anything on this dish yet. I used a homebrew helix to feed my Primestar dish 
on AO-40, but might
want to try a patch feed on this dish.

I'm also not sure how I'm going to support the feed. I've read from folks 
that used angle channel mounted to
the dish's center as a feed support, and have also noticed that my dish has 
holes drilled in each corner,
possibly for feed support arms? I've also seen pictures of dishes where guys 
used 2x2 square wood through the
dish, as both a feed support and also a place to hang counterweights.

I'd appreciate any thoughts on this dish, and also perhaps someone on the 
list has found a satellite downlink
suitable for testing an AO-40 quality groundstation?

Thanks. 73,

Kyle Yoksh
K0KN
Olathe, Kansas



--- Original Message ---

Message: 13
Date: Mon, 21 Jul 2008 07:34:03 -0400
From: "Roger Kolakowski"
Subject: [amsat-bb] Re: 2.4Ghz satellites and signals ?
To: "Tim Tuck" ,"AMSAT-BB" <amsat-bb@amsat.org>
Message-ID: <003c01c8eb25$ae247000$0200a8c0@Tanguray>
Content-Type: text/plain; charset="iso-8859-1"

Depending how wide your IF is...this list is fun:

http://www.uhf-satcom.com/

Roger
WA1KAT

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