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Re: [TowerTalk] OCFD: Should I be able to do better?

To: towertalk@contesting.com
Subject: Re: [TowerTalk] OCFD: Should I be able to do better?
From: David Gilbert <ab7echo@gmail.com>
Date: Thu, 27 May 2021 13:50:51 -0700
List-post: <mailto:towertalk@contesting.com>

Joe,  you are of course correct, but I think maybe he said 576 mohms, as in 576 milliohms, although he didn't type it very clearly.  He couldn't ever have had a VSWR of 1.012 with j576 ohms.

73,
Dave   AB7E


On 5/27/2021 12:01 PM, Joe Subich, W4TV wrote:

The closest resonant frequency is 6.68MHz, with an VSWR of 1.012 and
an impedance of 50.1-j576m ohms.

That is *NOT* a resonant frequency - not with -j576 Ohms.  Your measured
value at 7.15 MHz (+j7.11 Ohms) is much closer to resonance.  I would
estimate the actual resonant frequency ( j0.0 Ohms) to be about 7.13
MHz.  Note: *Resonance* is defined as j0 ohms regardless of the real
part of the impedance.

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