Topband: K9AY loop -- adding additional radials?
k9ay at k9ay.com
Wed Nov 14 22:13:49 EST 2018
Pete and all:
A couple years after the original article, I began recommending adding 4 or 8 radials if the ground rod alone did not provide a good pattern. The radials need to extend a bit beyond the loop wires' footprint. 21 ft should be OK.
My own loops have always worked with just a ground rod, first in Georgia red clay, then here in the midwest black dirt. Also, with just one null, in one direction, it may take a while to be sure how your loop is working.
Date: Tue, 13 Nov 2018 17:33:38 -0500
From: Peter Bertini <radioconnection at gmail.com>
To: topband at contesting.com
Subject: Topband: K9AY loop -- adding additional radials?
<CA+uDY2RaM3JUJ5qPovLhzzNaTPARqhn__=EAUsZ=JQHj_ZAWTA at mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
Hello to the group. I installed a K9AY system last week and added four 21
foot radials on ground radials with a ground rod at the center. The
antenna didn't seem to have much directivity, so today I added another four
4-ft inexpensive TV type ground rods at the ends of each of the radials.
We've had some heavy rain, but tonight I am noticing excellent nulls on
European stations when changing directions. The antenna is located in a
wooded area, and I had assumed the ground was fairly conductive, but
apparently not... would adding another set of four radials in between the
existing four improve the system? I am not sure how much the change
relates to the heavy rains or adding the grounds.
This email has been checked for viruses by Avast antivirus software.
More information about the Topband