If you ONLY need to measure impedance, then you do not need to set the
analyzer to a specific port Z. That's for OSL calibration, directly
measuring SWR, and some other line optimization tools.
If you've not yet conducted OSL calibration and the device was purchased new
by you, then you can likely ignore OSL calibration for now. Still, it's a
good idea to get comfortable with the cal routine. It's very easy once you
have a OSL calibration set.
The RigExpert line of CIAs are battery operated and ground independent. You
can connect the balanced line directly to the UHF/N jack. I use a PL259 to
dual-banana adapter. Just connect the analyzer to your balanced line and
take a complex impedance reading. It's that simple. You'll still need to
take the impedance result and apply it to your tasks at hand.
Paul, W9AC
-----Original Message-----
From: TowerTalk <towertalk-bounces@contesting.com> On Behalf Of Neal
Sulmeyer
Sent: Tuesday, September 3, 2019 8:17 AM
To: Wes <wes_n7ws@triconet.org>
Cc: towertalk@contesting.com
Subject: Re: [TowerTalk] Open wire measurments
First to measure the impedance of the home brew open wire feeder. Then
measure the antenna impedance when at its final operating position/height.
Finally to use stub matching on the open wire to match to the balun
(whatever ration is required) and then coax back to the shack.
On Tue, 09/03/2019 08:05 AM, Wes <wes_n7ws@triconet.org> wrote:
>
What parameter(s) are you trying to measure? Why?
>
> Wes N7WS
>
>
> On 9/3/2019 4:23 AM, Neal Sulmeyer wrote:
> > How do I make measurements on open wire feedline with my analyzer? I
have a RigExpert which has four discrete impedance settings (25,50,75, and
100 ohm). Obviously, the connection is for unbalanced (coax) lines. A 4:1
balun would work with window line (440 ohm), but what about open wire 600
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