[TowerTalk] 160M Wire Antenna

[K7GCO@aol.com]

In a message dated 25.04.00 07:36:23 Pacific Daylight Time, 
w8ji@contesting.com writes:

<< 
 >    Are you saying that a "W" shape is preferable to an inverted "V"  or a
 > drooping dipole because keeping the ends high will contribute to a more
 > directive pattern?  I'm getting closer to putting up my 300 foot doublet
 > and am trying to decide what tasks to assign to which trees!
 
 All I am saying is when the ends of the antenna are placed near 
 the lossy media, losses increase. Because of that, I try to make 
 my Inverted V dipoles as flat as I can and I especially try to keep 
 the higher current areas as un-bent and high as possible.
 
 I was corrected on this reflector a year or so ago when I failed to 
 give importance to the very low ends hurting efficiency from ground 
 losses. As I recall, people were discussing the pro's and con's of 
 Inverted V vs regular dipoles and the consensus was Inverted V 
 dipoles are great way up in the air, but not with the ends down in 
 all the clutter and near earth.
 
 I tend to think in terms of high antennas without a sharp apex angle.
 73, Tom W8JI
 w8ji@contesting.com
  >>
    Good information Tom.  I have found that inverted vees work unusually 
well over fences and will try and duplicate the affect of variations of this 
in Eznec.  Perhaps the fence wires help reduce the ground losses of end wires 
close to the ground.  I will try different patterns branching out from the 
ends and just parallel radials under the inverted vee extending out 1/2 wave 
or more.  I have a location to try it with and without on 160-40M.

I have used the "W" configuration on 160M but didn't have a comparison 
inverted vee for reference.   k7gco

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