Greetings All:
I have watched with interest the discussion here regarding getting more
activity on 160, and the receive antenna problems for us who are city
dwellers, and/or have small lots. I live on a lot, in a small town here
in east Texas that is 90 ft wide and 152 feet deep. In the back yard
area I have a 70 foot tower from which hangs the vertical part of an
Inverted L. For 3 or 4 years I used a variation of a K9AY receive
antenna, but each spring I had to take the antenna down because K5MWH,
my sweet wife, wanted the yard to look nice for the summer. Please go
look at http://www.suddenlink.net/pages/w5uc/160.html to see the K9AY
variation, and then click on 160 VERTICAL ARRAY (near the top of the
page) to see my solution. This receive antenna takes almost NO real
estate to construct, and since it is along the side and back of the lot,
it can stay up 12 months/year. It consists of 3 vertical antennas as
described by K7TJR in his 8 antenna circular array, provides coverage in
4 directions, and needs no radials. The antennas are mounted on and
above a chain link fence, and are 54 feet apart. They could also be
mounted on a privacy fence. The calculated RDF is around 9.2 which is
better than a K9AY, and the maximum lobe take off angle is 26 degrees
which is considerably lower than the K9AY. It appears that the F/B
ratio is in the range of 20 db. Go look, and if you have questions
contact me off reflector. I will be glad to share what I know and what
I have learned, most of which came from the generosity of Lee, K7TJR,
whose pre-amps I used in building the verticals.. Good luck, and give
160 a try.
73,
Mike, W5UC
*If you voted for Change & Hope, Bend over.
You are about to receive your bounty.*
http://www.suddenlink.net/pages/w5uc/
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