On 4/10/2014 5:30 PM, Tom Osborne wrote:
HI All
Is there a lot of difference between a vertical long wire antenna and
a regular vertical GP?
Not much. Just the angle of the dangle. :)
Last year when camping I used a 65 foot piece of wire up into a tree,
hooked directly to the output of my tuner. I had one long
counterpoise and the tuner connected to a ground that I drove INTO the
ground.. It seemed to work pretty well on all the bands.
A counterpoise and/or radials are a GOOD thing. A connection to the
earth does NOT make an antenna work better, because the earth is really
a very large resistor. One of the functions of a good radial system is
to SHIELD the antenna from the earth.
Not having any modeling software here, what I was interested in is if
the vertical LW works different than a vertical GP.
The length of the vertical (as a fraction of a wavelength affects the
vertical pattern. Study what happens to a 43 ft vertical on the bands
above 20M to see what I'm talking about.
73, Jim K9YC
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