[Elecraft] Helix-wound EDP

[Vic K2VCO]

Ron D'Eau Claire wrote:

> No, it was center fed like an inverted V, so it was fed at the bottom of the
> pole in his arrangement with one side of the feedline going to the pipe and
> the other going to the horizontal wire. (Otherwise it wouldn't be a
> 'doublet'). 

Now I remember that it was as you describe.  But you could make a 
doublet with the horizontal wire coming off the top of the pipe.  Sort 
of an inverted L fed at the top.

       feed here :----------------
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That would have a little lower angle from the horizontal part and less 
ground loss.  I'll have to try these in EZNEC and see what happens.

> Yes, the arrangement would introduce some unbalance in the feeders. 

If it's severe, then the line can be quite lossy.  Possibly looking at 
the element currents computed by EZNEC will give me a clue.

-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco