On Dec 1, 10:25*am, (Richard Harrison)
wrote:
I wrote:

"A 3 M diameter has about 9.42 M circumference so becomes effective as
its circumference is about one wavelength or about 11.8 MHz. At lower
frequencies radiation from a helix is radial rather than axial."

Rounding:
300/10M=30 Mhz.
Likewise:
300/1M=300 Mhz.
If Art`s helix is only about 1 meter in circumference, not 10 meters, it
will only be effective as an end-fire antenna above about 300 MHz, not
30 MHz. The good news is that his reflector can be proportionally
smaller.

Best regards, Richard Harrison, KB5WZI


Richard
I would disagree with the above as it has it's roots in a loop array
yagi style
where phasing is of the essence. What Kraus did do is to destroy the
notion that
a radiator has to be straight to be effective which is borne out by
Gauss.
At the time he did his work ( over 50 years ago ) radar and other
advances pointed to the use of
higher frequencies and away from HF which then opened the advantages
of circular polarization
Thus his work to my knoweledge has not been extended to HF via known
observables, an avenue ideally
identified with hams with the experimental bent coupled with a
technical educatioin.
If others have already experimented in this particular area I would be
happy to hear of their experiences and actual
scalar obsevables.
The fact that my full scale experiments have exposed facts that are
contrary to that of 50 years ago
is what drives me on this task tho the labour tasking can sometimes be
exaspirating but non the less necessary
rather than relying solely on just personal thoughts, intuitions and
deductions,After all I am a qualified engineer
and certainly would not have got very far in life if I thought a
testing regimen is not a requirement any more
Regards
Art Unwin.......xg