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[TowerTalk] 39 +j0 ohms?

To: <towertalk@contesting.com>
Subject: [TowerTalk] 39 +j0 ohms?
From: "Jamie WW3S" <ww3s@zoominternet.net>
Date: Sun, 2 Dec 2018 15:07:54 -0500
List-post: <mailto:towertalk@contesting.com>
trying to understand a 40m vertical, my Rigexpert analyzer has Z, X, R and 
C.......when I measure the vertical at 7.125 (target freq) the SWR is 1.3:1, 
but the Z is 50 ohms, I’m told the impedance needs to be 39+j) ohms? How can I 
read that with my rigexpert.....I can get around 39 ohms at 7.400.....is my 
vertical too long, or too short? 
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