How about 80 meters with an antenna
that does not exist!.....
to your neighbors!
Want to get on 80 meters and
you don't have the real estate for a dipole that size? Look up
at the eave of your house for the answer to your needs! The
antenna described here is nothing new, and it is Near Vertical
Incidence Skywave (NVIS),
but it works like a charm.
As many of you know I
live on a very small lot in a restricted neighborhood that does not
welcome antennas. I have written before about antennas in the
attic, but this time I am writing about an antenna that is outside,
can work the world at times, and is almost invisible to
everyone. I got the idea for a full wave 80 meter loop from a
friend on a round table net one evening a couple of years ago and
have finally got it working to the point that I felt it was time to
share its success with others.
With this loop I have
worked most of the continental United States on 75/80m, and even
with 800 watts of power I don't get into anything but the Christmas
lights! Contrary to popular belief you can run ladder line in
the attic, and in the shack, with out RFI problems if you terminate
How I installed the full
Using #14 stranded wire
stapled to the underside of the eave of
the house (see drawing below for example). I followed the
contour of the house for the most part and the shape of my loop is
NOT close to a square, rectangle, or circle, but since it is NVIS
anyway, the pattern is not a major issue.
I terminated the loop into
450-Ohm ladder line that I ran up through a soffit vent into the
attic space. In order to keep the ladder line away from metal
objects I fastened the ladder line to a roof rafter and ran it all
the way up and over until it was directly above the ceiling
penetration that goes down into the shack.
See photos below
for some ideas.
Ladder line up and over!
Now you know the source of all those "UFO"
General layout of
loop following roof contours of