[TowerTalk] Horizontal Loops at low heights

[T A RUSSELL]

If you want to transmit on this antenna, it needs to be higher to
minimize
ground losses.  A horizontal loop (or dipole) makes a good "cloud warmer"
when placed between .1 and .2 wavelengths above ground, actlng as a
2 element parasitic array pointed straight up.  If a loop is used, it
should
be electrically equal to 1 wavelength.  At 1800 ft, you would have 4 long
wires combined in a square, with the main lobes trying to radiate at low
angles but with LOW ground reflection coefficients at low angles due to
the low height (a poor combination).

de  Tom  N4KG
............................

On Mon, 20 Oct 1997 13:14:59 -0500 Stu
<stunroe@orion.branch-co.lib.mi.us> writes:
>I am interested in knowing if anyone has experience with a horizontal
>loop approx 1800' either laying on the ground or a very low height
>above, 3-4' on regular fenceposts with insulators. I plan on using
>insulated #14 thhn fed with shielded ladderline made from some old 
>coax.
>What I am after is a quiet recieve/ transmit antenna for the lowbands
>and working MARS nets in the 2 & 4 mc range for distances up to 500
>miles or so, if it works farther :)  Would it make any difference
>whether it was on the ground or just a few feet up? I have a  field I
>rent out to a local farmer who wasn't real happy when I put in a few
>fenceposts & 10' pvc pipes for a beverage a few years ago after the
>growing season had ended so the on the ground method has the appeal of
>being 'invisible' and a lot less work when time to take it up in the
>spring gets here.
>73 Steve KG8TX
>
>
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