[Lowfer] MP Loop antenna reconfigured

[Laurence KL1 X]

Good questions for Mitch Andy - Ive been asking questions on radials and screening to John TAG and Jay and John found an old paper that says (empirically) that a tuned screen under the loop should reduce "(dilectric ground) losses by quite a few dBs , but even a screen of say 1.5m width by just the length of the lower loop will reduce losses even if it isnt tuned. There is some discussion on "How" you would tune it and in reality will it help in bespoke geographic and ground conditions ~ Im, before the heavy snows come (we still dont have any here in Alaska would you believe) Im going to lay out some 200 ft long by 6ft wide welded mesh fencing pinned to the ground and see if it makes any difference - empirally I think John tried it with a small sized screen and saw no difference -  Ill have a play in any case, and see what currents are flowing -  and at the same time looking to increase the size of the loop without adding the same additive ground losses and getting no where :-)   If I dont get anywhere Ill probably change the config into a Inv L and see if a  base loaded top cap does better at these lower temps without the Tree sizzle hopefully - I have a well casing and an estabilished screen close by I can tie into -   Laurence KL 1 X  WE2 XPQ
 > Date: Fri, 7 Dec 2012 15:33:42 -0800
> From: ku4xr at yahoo.com
> To: lowfer at mailman.qth.net
> Subject: Re: [Lowfer] MP Loop antenna reconfigured
> 
> Mitch:
> 
> Thanks for the pictorial of the loop.. I have been trying to 
> mentally picture what you were doing, and the diagram cleared
> it up for me.. 
> 
> I do have a couple of questions if you can take the time to
> address them..
> 
> #1 How high above ground is the bottom side of your loop ??
> 
> #2 Do you have a Radial Field - of any sort - underneath, or
> leading out from under the loop ?? And if so; will you describe
> how you have the Radial Field laid out on the ground ??
> 
> Thanks OM for your time and reply to the list, as I'm sure there
> are others who will be interested in your description..
> 
> 73, and Merry Christmas to you and your family from:
> 
> Andy - KU4XR - Friendsville, TN.
> .htm
> > Post: mailto:Lowfer at mailman.qth.net
> > 
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