[TowerTalk] End feeding a half-wave vetical

[Buck - N4PGW]

Have you considered a coaxial dipole design?  It can be made several ways.
The most popular is to fold back the shield 1/4 wave over the outer jacket
of the coax leaving 1/4 wave center conductor.  The antenna is end fed, no
matching (it still needs the 1:1 balun, loop, or ferrite beads to keep the
radiation from following the jacket).  It can be made by running the coax
through the center of a piece of copper or aluminum tubing, or using copper
braid.  They work well as vertical or horizontal antennas and it will fit
your requirements below.

Good luck
Buck
N4PGW


> -----Original Message-----
> From: towertalk-bounces at contesting.com [mailto:towertalk-
> I want to end-feed a half wave vertical so I can get a nice low angle of
> radiation.  The base of the antenna would be about 0.05 to 0.10
> wavelengths above ground.  It looks like the antenna impedance will be
> around 4,000 ohms.  I would prefer not to use tuned circuits or stubs as
> I would like the device to work over a 2:1 frequency range.  (No, I'm
> not expecting the antenna to be a half wave over a 2:1 frequency range!!
> I would have 2 different antennas to choose from.)  Power level is 200W.
> 
> 73 de Jim Smith   VE7FO