Jim,
Why not just shunt feed the tower? 70 feet with that beam for top-loading is
a good height for 160. If it will be a guyed tower these would need to be
insulated, and run all cabling from the bottom and inside the tower whether
guyed or self-supporting.
Based on some discussion on the reflector a few months ago, the tower would
best be sited at the center point of the existing radial field. Offsetting
it along one of the radials would be like using only one radial.
73/Jon AA1K
www.aa1k.us
-----Original Message-----
From: Topband [mailto:topband-bounces@contesting.com] On Behalf Of Jim
Miller
Sent: Monday, May 16, 2016 7:41 PM
To: topband@contesting.com
Subject: Topband: Inverted L off tower?
One of my friends is thinking about installing a 70 ft. tower with a
2-element shortened 40M yagi. He is thinking about installing the new tower
in a location where he now has a vertical used for 80M and 160M (i.e - the
existing radials will terminate at or close to the base of the new tower).
He is planning to relocate the 80M vertical to another location with other
radials. He would like to support an inverted L for 160M off of the new
tower, using the existing radials. His question is, how far must the
vertical leg of the inverted L be spaced from the new tower, with a view to
keeping it close enough to use the existing radials?
Thanks
jim ab3cv
_________________
Topband Reflector Archives - http://www.contesting.com/_topband
_________________
Topband Reflector Archives - http://www.contesting.com/_topband
|