[TowerTalk] element tapering calculation

[David Aslin]

Bob, 

This workbook is a great service to the antenna building community -
thank you!

73

Dave G3WGN  WJ6O

 

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Message: 10

Date: Thu, 29 Nov 2012 21:26:00 -0600

From: Robert Chudek - K0RC <k0rc at citlink.net>

To: towertalk at contesting.com

Subject: Re: [TowerTalk] element tapering calculation

Message-ID: <50B82748.6070900 at citlink.net>

Content-Type: text/plain; charset=ISO-8859-1; format=flowed

 

Last year I found that W6QHS (now W6NL) Lotus spreadsheet and converted 

it to Excel 2003 XLS format. His spreadsheet is used to determine the 

survivability of a tapered element. It is not an RF design tool. Anyone 

can download a copy of ELEMENTS.XLS from here:

 

*http://tinyurl.com/d7m3pxn*

 

I added a number of worksheets to create this new workbook. The first 

sheet contains the formulas / calculations. The second is a mechanical 

layout of the 40m Telrex I was experimenting with.  I added two more 

pairs of worksheets to I could quickly jump among different design 

parameters. The final worksheet contains some information I found 

regarding Frank's antennas at W3LPL and I saved it for reference.

 

Also, for those who don't have a "charting VSWR meter", there is also a 

workbook that lets you input VSWR values and it will create a chart that


you can print out. That file is "VSWR charting tool - Rev 3".

 

73 de Bob - K?RC in MN