Here is a great reference for you Mark - Antennas By N6LF
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Antennas By N6LF
Antenna design ideas for radio amateurs by Rudy Severns N6LF | |
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From: Mark K3MSB <mark.k3msb@gmail.com>
To: topBand List <topband@contesting.com>
Sent: Monday, September 26, 2016 9:33 AM
Subject: Topband: 160M Inverted-L Radial Question
I've been doing some reading on elevated radials for Inverted-L antennas.
The existing literature seems to fall into two types; ground radials where
the feed point is very close the ground, and systems were the feed point
is elevated at the height of the radials.
My Inverted-L is 50 feet high and has the feed point in a box at ground
level. I'm considering using 2 elevated radials so as to reduce the
radial field next to my new (hopefully) RX antenna (BOG). Since I
don't want to raise my feed point by 5 feet and thereby decrease the
vertical part of the Inverted L accordingly, I was considering using a
pair of elevated radials (5 feet high -- don't know the exact height
yet). I was planning on the radials sloping up 45 degrees from the base
of the Inverted-L to my radial height. The radials will not be straight,
but will have doglegs due to property constraints.
I haven't found any literature that addresses this consideration.
Comments?
73 Mark K3MSB
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