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Old June 24th 06, 11:13 AM posted to rec.radio.amateur.antenna
 
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Default Magloop and ground mat blues.....


Lee wrote:
My homebrew 3 foot dia Magloop works very well vertically mounted 3 foot off
the ground but i`m wondering if maybe it could do a little better in the low
angle radiation department ....i seem to hear stations within 1000miles
consistently strongest.....VKs and stateside etc much lower !!!.....

The loop is mounted on a rotator above a groundmat buried about 6 inches
beneath the lawn and consists of 30 radials each about 30 foot long and the
loop is mounted in the centre, is that ok, or should i work the loop higher
than 3 feet above the mat, or remove the ground mat and work just with
medium loam soil underneath instead??........


With a low height "vertically polarized" loop the ground would never
hurt the antenna and always help it to some extent. The only exception
might be if the soil is so very poor it looks nearly invisible, or so
good it looks perfect.

I would not remove the ground mat, although 6 inches is pretty deep!

A small loop is a very inefficient radiator unless you do everything
perfectly, and if perfectly done it has mediocre efficiency.

So how did you build the loop?

 
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