[TenTec] Omni VII Query

[Ed Purvis]

   Darn good explanation.  Better than any tech manuals.  Thanks Jerry.
 
                         Ed


Yesterday is history,  tomorrow is a mystery.
Today is a gift,  that is why it is called the present.

--- On Sat, 12/12/09, Dr. Gerald N. Johnson <geraldj at weather.net> wrote:


From: Dr. Gerald N. Johnson <geraldj at weather.net>
Subject: Re: [TenTec] Omni VII Query
To: tentec at contesting.com
Date: Saturday, December 12, 2009, 12:27 PM


On Sat, 2009-12-12 at 11:01 -0500, Ron Zond wrote:
> Jerry
> 
> Thanks for the additional info.
> I know it's not perfect, My understanding is that at 1\4 wave intervals, the
> "appearance" changes
> from series to parallel, and back to series. The impedance at any given
> point may be something
> other than 50 ohms. 73.
> 
> Ron
> K3MIY
> 
> 
If the SWR is not 1:1, the impedance is varying as you travel down the
line. It can be represented as series or parallel at any point. The
change at quarter wave intervals is from inductive to capacitive
reactance and back the next quarter wave. Twice per half wave the
resistive component will be 50 ohms but with series or parallel
reactance depending on which equivalent circuit you wish to use.

73, Jerry, K0CQ

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