question what is the effect of raising a vertical
practical or theoretical ?
Nice answers to think it all over
Practical the higher the better why
from own experiments a long time ago on 26 security , 145 ham 151 privat
and 156 nautical
the following to think
higher is better in my case optical horizon and the reach of the tx
an other effect to mention is human noise the higher the antenna the less
noise that is a practical profit
one of the group mentioned mechanical aspect notice
radials said an other 120 is that practical only 1 practical is enough
use your radials as quide ropes and you may solve a supportproblem
mind that the angel of the rial(s) and erected radiator effetcts the
radiationresistor 90 degrees . 35 ohm 180 degrees 75
120 degrees about 50 ohms and al between
Mind that a higher vertical is more sensitive for statics solve that effect
by resitor or neonbulb(lightning protection
I like your dicussions however some things are not know at the other side
of the swimmingpool
73 and 55 fde ruud PA0rab


schreef in bericht
oups.com...
On Mar 1, 9:12 am, Buck wrote:
However, Steppir antennas says
that an antenna on the ground needs 120 radials just to match one in
the air with two radials.

That would only apply to an elevated antenna 1/2 wave or higher up
though..

I would like to know where the noticable
benefit of raising an antenna above the ground actually takes place
and where is the maximum benefit.

I know that the higher the better, but rather than that kind of
benefit, I am wondering from a ground standpoint where the benefits
start and where the point of diminishing returns begins.

Just depends on the band, the path/angle used most of the time, the
ground quality, etc, etc.. Raising it to 40 ft from 12 feet would make
a
noticable difference if you compare all the various types of paths.
IE:
Just the local ground/space wave will be improved a good bit.
As far as the ionosphere, would effect farther off stations more,
than closer in. It's possible for the low antenna to be nearly as
good on a short/medium hops, but DX will be better on the higher
antenna and possibly open/close the band a bit earlier/later.
Ground loss will be lower, but I'm not sure it's worth the cost of
the
cherry picker.. I'd tend to say not, being a cherry picker is usually
not cheap.. Being the current antenna is just a bit less than a 1/4
wave up, it's not in near a bad a shape as say a 80 or 40 antenna
at that height in feet.
MK