[TowerTalk] Cushcraft A4 VSWR curves

[Robert Chudek - K0RC]

UPDATE: I received a few direct replies with the VSWR data points I wanted. Thank you.

I created a VSWR graphing tool using Excel to plot the information I received. The tool will allow you to print VSWR charts, make an adjustment to your antenna, update your data points, and print a new graph to compare and see what effect your changes have made.

You can download a copy of the workbook (25-Kb) from my website, here:  http://tinyurl.com/ygp92fw

At this point, Rev 1 is pretty basic. You type the information from your SWR meter into a table and the VSWR graph is automatically generated for you. I might add other features if there are any requests to do so.

73 de Bob - KØRC in MN

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Message: 6
Date: Fri, 30 Oct 2009 19:33:04 -0500
From: "Robert Chudek - K0RC" <k0rc at citlink.net>
Subject: To: <towertalk at contesting.com>
Message-ID: <37B058F04E7D41AC82A75A2F5E3F5598 at GX620A>
Content-Type: text/plain; charset="iso-8859-1"

Does anyone have VSWR curves plotted for the Cushcraft A4 they could share with me? Plots from an antenna simulator would be okay but I'm more interested to see real life data of installed antennas. There are not curves in the manual I downloaded from the website.

Also, would anyone care to conjecture why an A4 would show minimum VSWR on 13.990 and 20.300 MHz instead of inside the 20 and 15 meter bands as expected?

73 de Bob - K?RC in MN