Snip: I am right now using an inverted L which is spaced about 4 feet away
from my tower. The vertical leg is about 85 feet.
I remember a number of years ago talking with Jeff Briggs (K1ZM) about
ideas for my first inverted-L while we were both waiting for flights out of
the Dayton Hamvention. Like you I wanted to use my tower as a support and
Jeff suggested that the vertical wire be at least 15-feet away from the
tower. In short I did what Jeff suggested and the antenna worked well. As
an alternative you can also detune the tower.
Snip: I only have 6 radials at the present time Now here is the question The
horizontal leg is about 50 feet and goes to my back yard. Since the trees
are not that high, it probably slopes down to 40 feet at the far end The
horizontal wire faces west.. Would it help me to face that wire to the south
for east west signals on transmit.
I would not lose too much sleep on your horizontal wire and the specific
direction that?s its pointing. In theory there is a very small amount of
gain in the opposite direction to that of the horizontal wire. If you model
this there is only about a 1.5 DB F/B ratio, certainly nothing to write home
about. Since the inverted-L is a shortened vertical it benefits from a good
ground system so I would definitely add some more radials.
73,
Les, N1SV
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Stew Perry Topband Distance Challenge coming on December 29th.
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