[TowerTalk] measuring and using the term impedance

[Rex Lint]

If I remember right, it doesn't tell you the sign of the reactance - you
have to dope that out by shifting the frequency a little and seeing if it
goes up or down with plus or minus change in freq., so it's not all THAT
simple...

Rex
K1HI

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com]On Behalf Of k1ttt at arrl.net
Sent: Monday, May 16, 2005 7:11 AM
To: towertalk at contesting.com
Subject: Re: [TowerTalk] measuring and using the term impedance




>
>
> K7PUC,
>
> Alfred,
>
> Call MFJ.    I used their 259 analyzer which is an  excellent product. Why
> don't you go buy one and a 4080V antenna and  let us all know what you get
> versus your method of measuring  impedance.  Then we all can shop and
> compare.
>
>
> N0AH

the 259 provides the full complex impedance if i remember right.  by only
reporting the real part you are leaving off half the story.  to better
analyze what is happening you need to record and report the full r+/-jx
impedances.  otherwise you might as well just report swr since you are
throwing away what could be significant information that is the phase
angle part of the impedance.


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