On Jul 5, 8:21 am, "Richard Fry" wrote:
"Art Unwin" wrote On Jul 4, 5:29 pm, rick frazier wrote:
Not sure where you get the swr repetitive over a band of frequencies
stuff, (perhaps I don't read enough of the group messages) but to reply
relative to dummy loads in general....

This comes from the radiator listed on my page
unwinantennas.com/

_______________________

Art -

The most important measure of an antenna is the amount of field intensity it
can produce at a given distance in a given direction, per watt of applied
r-f power. So far you have written nothing specific about this for the
"Unwin" antenna.

Note that a transmission line feeding a 20 dB series attenuator attached to
the input of a 100% efficient antenna will show very high return loss to the
r-f source ( 40 dB plus the twice the cable loss). But that antenna system
will radiate little of the available EM energy, nonetheless.

Could you please comment on the measured or at least the calculated
RADIATION CHARACTERISTICS of your antenna, compared to a matched 1/2-wave
dipole at that frequency (or an isotropic radiator), and tell us how you
arrived at them?

If you can do that, and your results can be scientifically duplicated by
others, you will have removed the source of a lot of the skepticism you read
here and in your similar threads on eHam.net.

Otherwise it will be "more of the same," which (let us hope) is or should
not be your goal.

RF

No.More of the same is not my goal nor is it to respond to every
request.
The mathematision or doctorrate type can do it solely by mathematics.
The computor program is built on those mathematics. and a antenna
program
will ALWAYs produce radiators in equilibrium which means at an angle.
Even without
a optimiser you can do it on Eznec but it would be laborious but it
can be done.
People are enamoured with the Yagi so thay always insert planar type
figures thus the
program which is designed around equilibrium. If the goal is small
efficient radiators then
equilibrium must be present starting with a full wavelength that can
then be placed in a small volume.
It is the smaller efficient radiators and arrays that I have pursued
since radiation per unit length is solely a measure
that correlates with resistivity and it is that where my conclusions
lie. Gain itself is a whole different matter
cannot show it's worth