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Re: [TowerTalk] measuring impedances with a VNA

To: jimlux <jimlux@earthlink.net>
Subject: Re: [TowerTalk] measuring impedances with a VNA
From: Edward Mccann via TowerTalk <towertalk@contesting.com>
Reply-to: Edward Mccann <edwmccann@yahoo.com>
Date: Tue, 30 Jul 2019 16:32:42 -0700
List-post: <mailto:towertalk@contesting.com>
How about advice on measuring impedance offered to common mode current in coax 
with a one-port and two port VNA?

Ed McCann
AG6CX

Sent from my iPhone

> On Jul 30, 2019, at 3:56 PM, jimlux <jimlux@earthlink.net> wrote:
> 
> We've discussed the measuring of things like antenna traps, and we've had 
> varying levels of success.
> 
> 
> https://www.mwrf.com/test-measurement/make-accurate-impedance-measurements-using-vna
> 
> Discusses three different configurations (one port, and a couple two port 
> measurements), gives the math, and looks at the uncertainties.. each works 
> best in a particular range of impedances.
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