Re: [amsat-bb] AO-40 and Trees

["Greg D." <ko6th_greg@xxxxxxxxxxx>]

Hi Mike,

Trees are bad news.  It's amazing how much signal they absorb.  I can
tell you from first hand experience; it's almost impossible to work AO-40
when it's to the east of me, because of a set of oak trees behind the
house.  You might want to do a careful plot of the orbit with respect to
the tree line.  It doesn't take much of a hole to hit the satellite.

Good luck,

Greg  KO6TH



>From: "Michael T. Sheleheda" <shelehed@earthlink.net>
>To: <amsat-bb@AMSAT.Org>
>Subject: [amsat-bb] AO-40 and Trees
>Date: Sun, 03 Aug 2003 20:20:33 -0400
>
>Hello.
>
>     I have been making contacts on UO-14 with an arrow antenna for a while
>now and want to move up to AO-40.  I have a Kenwood TS-2000 and want to
>start building a half way decent station, but before I spend too much money
>on antennas and rotors, I have a question.
>
>     I have a row of 50-60 foot oak trees behind the house which I would 
>have
>to aim through to hit AO-40.  I can work UO-14 through these trees with
>little signal loss, but what can I expect  when trying AO-40?  What would 
>be
>a better antenna?  A BBQ dish?  A yagi? How are the "pre-built" systems 
>sold
>by N3IYR, K5GNA or others?
>
>     I am very much a newbie to this and would appreciate any help.
>
>     73
>
>Mike Sheleheda
>K4MTS
>Fairfax, VA
>FM18
>
>
>----
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