Topband: K9AY loop -- adding additional radials?

Clive GM3POI clive at
Tue Nov 13 18:04:20 EST 2018

Peter when testing listening to various stations you should be mindful as to
the likely incoming wave angle. I.e do not expect a very good F/B ration if
the station is not low angle. Try it and see but make your judgments on EU
signals not locals.  73 Clive GM3POI

-----Original Message-----
From: Topband [mailto:topband-bounces at] On Behalf Of Peter
Sent: 13 November 2018 22:34
To: topband at
Subject: Topband: K9AY loop -- adding additional radials?

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.

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