[amsat-bb] Re: 2.4Ghz satellites and signals ?
K & R Yoksh
yokshs at sbcglobal.net
Tue Jul 22 10:07:28 PDT 2008
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
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?
--- Original Message ---
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 at amsat.org>
Message-ID: <003c01c8eb25$ae247000$0200a8c0 at Tanguray>
Content-Type: text/plain; charset="iso-8859-1"
Depending how wide your IF is...this list is fun:
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