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Re: [TowerTalk] Top Hat Calculator

To: "TowerTalk@contesting.com" <TowerTalk@contesting.com>
Subject: Re: [TowerTalk] Top Hat Calculator
From: John Kemker <john@kemker.org>
Date: Wed, 05 Aug 2009 02:32:50 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Folks, you might want to be careful before visiting this website.  It 
has a virus/worm called "HTML:Iframe-Inf" which is an exploit to launch 
invisible frames and distribute malware.  I confirmed this by using a 
text-based utility called "wget" on a Linux machine, then opened the 
file retrieved (index.html) with a text editor.  At the bottom is a line 
that launches the invisible frame, pointing to a website called 
"michaelsbestway2findalawyer.cn", which is the malware site.

I have reports that some people's anti-virus doesn't report anything 
bad.  That's why I went to a different machine (a Linux computer) and 
downloaded the web page in a safe manner.  Visit the website at your own 
risk.

--JohnK
73 de W5NNH
10X 75371/M&M 117/SMIRK 6185/Six Club 285/TRA 2499/Norcross 228 F&AM




N6FD wrote:
> I don't know of any specific calculator for top hat capacitance, but you 
> should be able to model it easily in 4nec2.  Its free and available 
> here: http://home.ict.nl/~arivoors/ <http://home.ict.nl/%7Earivoors/>  
> It has proven to be accurate in comparison to both textbook examples and 
> my real life antennas.
> 73,
> Erich N6FD
>
> Marc Willis wrote:
>   
>> Does anyone know if there is a top hat calculator out there? Appreciate the
>> help Marc NC7M
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