On Thu,12/3/2015 4:07 AM, Robb Webb Proprietor of Robb Webb Photography
wrote:
I live near a high cliff overlooking the sea. The cliff faces south, is a good
100ft high and is made up of mud and clay that over the years has been
collapsing into the sea.
N6BT, the excellent designer behind the original Force 12 antennas, has
studied this extensively and gave a great presentation on the topic at
Pacificon this fall. He showed that a vertical antenna at the edge of a
bluff has a strong propagation advantage in the direction of the
dropoff. The antenna still needs radials, just like any other vertical
(other than a half wave).
73, Jim K9YC
_________________
Topband Reflector Archives - http://www.contesting.com/_topband
|