Re: [IRCA] Metallic return

[Nick Hall-Patch <nhp@xxxxxxxx>]

At 15:40 18/07/2007, you wrote:



>To obviate the necessity of good grounds for a EWE, I was thinking
>along the lines of a metallic return: simply a buried wire, with
>either the terminated end or the feedpoint left ungrounded.
>
>Do you think this would make the termination more predictable?


Sounds like you're describing Bruce Conti's superloop, 
Charles.  http://members.aol.com/amhits/termloop.htm       His 
contact information is  on his website, 
http://members.aol.com/baconti/bamlog.htm, if you don't know him already.


>I converted my 22-metre longwire into a EWE with 4.6-metre
>"legs." The difference was amazing.
>
>It is an excellent antenna, and happens to be situated in a
>low-RFI portion of our property.
>
>Steve Ratzlaff suggests I raise the height of the legs. I
>can get 1.65-metre steel mast sections for fairly cheap.
....others have more experience with EWE's than I do, but I believe 
that signals get stronger as the vertical sections are enlarged, but 
nulls may not be as good on some frequencies.  Koontz'  original 
article found that signal strength on 160m increased with horizontal 
length, but that front to back ratio deteriorated after a ratio of 
horizontal to vertical of 4 to 1, at least in modeling.  If you don't 
think you're getting enough signal, beef up those verticals for sure...

Nick





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Nick Hall-Patch
Victoria, B.C.
Canada

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