@contesting.com
Sent: Monday, May 16, 2011 1:20 PM
Subject: Topband: Asymmetric radials for GP antennas; Just in case others
seek what I've just found...
All,
I've been searching for clarity and hard data on the effects of asymmetric
radials on radiation patterns and efficiency of a vertical
Cormac other Topbanders,
In the new June 2011 issue of
QST, page 42 there is an article about a vertical with only two
radials on one side of a vertical radiator, and the directivity one
gets by having losses in other directions with a very limited radial
field or ground plane.
If you can
Christman has written a number of excellent articles on this subject.
Some of which are in the ARRL book Vertical Antenna Classics.
FWIW, I have been using a base loaded 60 foot vertical on my urban lot
in San Jose, CA for the past 6 years. The base of the vertical is
elevated about 3 feet and
All,
I've been searching for clarity and hard data on the effects of asymmetric
radials on radiation patterns and efficiency of a vertical as I'm installing
a 21m vertical for 80/160 and will have to live with a radial system that is
significantly compromised over a 180 degree sector.
I was a
