It seems to me that the question is really about two good choices. It
has been shown that both vertical and horizontally polarized antennas
benefit from a dropoff IN THE DIRECTION OF THE DROPOFF. Caps added for
emphasis. It is also known that horizontal antennas don't care about
soil/water conductivity, but do care about height, and that verticals
don't care about height, but care a LOT about soil/water conductivity.
In addition to all of the long existing work on antennas and terrain, I
suggest N6BT's recent work on verticals at a dropoff, and my work on the
characteristics of horizontally and vertically polarized antennas cited
above. My work is at k9yc.com/publish.htm It was invited by NCJ, but
ARRL rejected it because it was too much work for their graphics
department (although they had published equally complex graphics in NCJ).
And there's also the issue of how well the antenna works in other
directions. As we all know, you can never have too many antennas!
73, Jim K9YC
On 1/20/2025 10:48 AM, Andy Blank wrote:
Hi Kenny
I have a similar situation at V47T.
The QTH is at the edge of an 1100 ft hill, sloping down around 30degs or
more to the Atlantic.
I have tried every kind of 160 antenna over the years. Finally settling on
a horizontal dipole at 50ft right at the edge of the hill.
It works great. The verticals (Inv L, Tee, C's, slopers) all performed
about the same; just OK.
The dipole doesn't need radials, a big plus for me.
I use beverages for RX so that is not an issue.
That said, there is no substitute for a vertical on the beach.
You are the master of those!
As you know, the proximity to salt water really makes a huge difference on
Topband.
GL!
73, Andy N2NT
On Mon, Jan 20, 2025 at 12:53 PM Kenny Silverman <kenny.k2kw@gmail.com>
wrote:
I’m scouting locations for a low-band trip and I found an interesting
entity that has a dip angle of 30 degrees.
In this example, there’s a high hill overlooking the ocean, another place
right on the beach. With the low dip angle, does it make sense to go
horizontal if the horizontal polarized antenna takeoff angle is low enough?
73 , Kenny K2KW
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