[Lowfer] Loopers are legal!

Tue, 02 Sep 2003 13:21:50 -0400

Eric,

I like the way you think!  One of the interpretations that allows ME to 
sleep as well is that the antenna could be a solid sheet of copper 15 meters 
on a side. Should be legal since the "length" is 15 meters either way. Now, 
cut a small slot around the perimeter leaving say a 2" wide strip having a 
length of 60 meters - and you have your Ashlock loop. Still legal.

I think the real reason the 15 x 15 meter loop hasn't been challenged by the 
FCC (and this assumes they care) is that the radiation from a loop of these 
dimensions does not exceed the radiation of a legal 15 meter vertical when 
both are in an open field and the ground conditions (including radials) are 
ideal for the vertical. My measurements have pretty much shown that even if 
the loop conductor were to be something ridiculously large in diameter, like 
4" copper pipe, the loss resistance (Rac as I call it) would be limited by 
the ground losses and it would still not beat the vertical.

Now that I've killed all interest in the TX loop, I have to point out that 
in a woods environment the loop ALWAYS beats the vertical. :)  
..........Also quicker to install by 100x, etc, etc, etc.

Bill A

>From: Eric Smith <[email protected]>
>Reply-To: [email protected]
>To: [email protected]
>Subject: [Lowfer] Loopers are legal!length is Date: Tue, 2 Sep 2003 
>11:23:07 -0500 (CDT)
>
>On Tue, 2 Sep 2003, John Davis wrote:
>
> > This probably re-opens that infamous can of worms again.
>
>While I am not currently a looper (but maybe loopy) I have finally
>accepted their liberal definition.  For me, I was able to once again
>sleep nights by looking at it this way:
>
>Say their total length was 15m (or 3m for MedFER).  Ok, they are in spec.
>Now, it doesn't say what gauge your wire is, so let's say (for the sake of
>argument) that the wire is 15m (or 3m!) in diameter.  OK -- no one is
>going to find any wire THAT heavy, but for the sake of my argument, they
>would still be in spec, as it is still 15m long...the rules don't say
>anything about gauge.
>
>NOW, let's say you hollow the wire out, so that now you have a cylinder
>15m long (and 15m in diameter).  Still in spec.
>
>Hollow it out to the thickness of a 12awg wire.  Still in spec ... still
>15m long.
>
>Now let's say you cut the length of your cylinder down to the thickness of
>a 12 gauge wire.
>Now you have a wire, only 1/8" long or so, 15m in diameter, and hollow.
>
>That's the way I understand the loopers to be wholly within spec.
>
>73
>Eric, KD5UWL
>
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