[Elecraft] The use of a doublet

[Joe Planisky]

For those who might be a little mystified by this discussion of  
feedlines and antennas, I can recommend the series of articles titled  
"Another Look at Reflections" by M. Walter Maxwell (W2DU/W8HKK)  
published in QST between 1973 and 1976.  The whole series is available  
as a single PDF file at http://www.arrl.org/members-only/tis/info/pdf/Reflect.pdf 
  (for ARRL members only, sorry.)  It's a very thorough treatment of  
the subject of transmission lines and impedance matching.  Easy  
reading in some places and a bit tougher in others, it's well worth  
close and careful study if you want to understand transmission lines  
and matching.

73
--
Joe KB8AP



On Jul 15, 2009, at 4:34 PM, Don Wilhelm wrote:

...

> The feedline is a part of the antenna system, and when not matched to
> the antenna feedpoint impedance, it will act as an impedance  
> transformer.
> Your particular antenna and feedline may work just fine, but the same
> antenna with a different feedline length may not work out well.
...