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Re: [TowerTalk] Stupd question about measuring Z and SWR

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Stupd question about measuring Z and SWR
From: Roger D Johnson <n1rj@roadrunner.com>
Date: Wed, 01 Jun 2016 19:29:14 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Real coax is seldom exactly 50 Ohms

Real coax has a small amount of reactance

Real coax has loss

If you don't do a SOL calibration at the antenna end you're just guessing!

73, Roger



On 6/1/16 1:20 PM, Hans Hammarquist via TowerTalk wrote:
When you want to measure the "real impedance" at the antenna, isn't it important that you have a feeder (coax) that has the correct Zo=50 ohms all the way?


I guess that the bridge will not read a correct antenna Z if the coax is not perfect.





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