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[TowerTalk] Modeling

To: <towertalk@contesting.com>
Subject: [TowerTalk] Modeling
From: n3rr@erols.com (Bill Hider (N3RR))
Date: Mon, 4 Feb 2002 11:45:37 -0500
Dave,

You didn't model it then.

You should model your complete installation, including interaction with
other antennas.  (One anecdote) I do, and it prevented me from putting a 10M
beam above a 15M beam on the same mast.  By modelling it (the situation), I
was able to determine that the 10M beam should be below the 15M beam.  So I
did.

Remember, modelling is like system design.  You must take into account all
the system requirements, not just one element (pun intended).

Visit my website for a walk through a Ham Station system design.

73,
Bill, N3RR
www.erols.com/n3rr


----- Original Message -----
From: "David L. Thompson" <thompson@mindspring.com>
To: <towertalk@contesting.com>
Sent: Monday, February 04, 2002 11:22 AM
Subject: Re: [TowerTalk] Modeling


>
> Please don't rely entirely on modeling when designing and installing an
> antenna.  Remember its just a tool to see if an antenna works in theory.
> Unless you can build real world interactions into the model or schema then
> its not an end all.   I got an excellent model for a W2PV
> 3 el 12 meter beam but putting it up 6 feet below my KT34XA really went
> askew.   The 12 meter beam went to 25.9Mhz and both the 10 and 15 meter
> portions of the VA went haywire.
>
> 73 Dave K4JRB
>
>
>
> ________________________________________________________________________
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________________________________________________________________________
Where do you get ICE bandpass filters & beverage matching boxes?  The
same place that pays for the hosting of this list:  The eHam Store.
Order online at http://store.eham.net.
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