Topband: CCD antenna

[Paul Christensen]

>From the website:

"A full wave antenna would usually have about 4K ohms at the feed point. 
Pretty hard to match a 50 ohm or even 300-600 ohm load to that.  With the 
addition of the capacitors we can have a full wave antenna and have the feed 
point load around 200-500 ohms, or, something we can work with."

Seems to me it would be less complex and more maintenance-friendly to vary 
the feedline length of the open-feeder or ladder line to achieve a 
transformation from 4K-ohm to 50-ohms.  In fact, if 600-ohm line is used, as 
the line length nears an electrical quarter-wave, that 4k-ohm Z is brought 
down easily.  The 600-ohm line VSWR remains constant along the line at 
roughly 6:1, but the 50-ohm VSWR will reasonably approach 1:1.   If a 
quarter-wave section is not convenient, then add another 1/2 wave section to 
the quarter-wave section as an alternate line length.

"They are broad band.  The 40/80 meter version is under 1.5:1 across all of 
40 meters and at or under 2:1 across all of 80.  The 20/40 is even better!! 
This is all on a single antenna!!  No tuner should be needed!"

Is that broadbanding coming at the expense of resistive losses?  If so, 
another argument for a simple change in feed-line length to achieve an 
efficient result.

Paul, W9AC