[600MRG] A dilemma....

[Kenneth G. Gordon]

On 31 Aug 2015 at 18:00, Brian, WA1ZMS wrote:

> If memory serves....there was an article in QEX many years back that addressed
> this topic.

I THOUGHT that was the case, but have read so many articles over so long 
that I wasn't sure I was remembering correctly. Anyone know the title?

>  The take away is: that along the length of a trap dipole you need
> to factor in the effect of the impedance changing. It has to. Voltages and
> currents are different at each location. Thus it becomes a more complex problem
> than just a simple LC tank that is resonant at freq(a). The trap will take the
> place of several degrees of phase shift "away" from the lower freqs that you
> want to keep traveling down the rest of the wire. The solution requires almost
> simultaneous equations to be solved if you get more than say 3 bands involved.
> 
> I know I'm not giving this the best explanation it deserves. And guys like N6LF
> can "leave me in the dust" when it comes to antennas so take what I say with
> caution.
> 
> If I or anybody else finds the article please post it. It's one I should have
> scanned into pdf at the time I read it.

Me too!!!! :-)

Ken W7EKB