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Old July 12th 08, 08:21 PM posted to rec.radio.amateur.antenna
Art Unwin Art Unwin is offline
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First recorded activity by RadioBanter: Mar 2008
Posts: 1,339
Default Part of Too Many

On Jul 11, 11:57 pm, (Richard Harrison)
wrote:
Art wrote:

"Of course you can show your academic ability in telling the group WHY
it "cannot possibly work" or wait for another expert to state "why" to
save face."

No one is saving face or conspiring against a new idea. You can`t break
the laws of physics no matter how hard you try.

Correct Please point to the particular law that I am breaking, that
would really help out a lot

Antenna performance is based on lengths of wire in the air and the
currents in them.

By performance you meam energy in vesus radiation out
as with a closed arbitary border.



Take a broadside array for example. It is usual to
drive current through all the elements of a plane in the same phase so
that the fields at a distant point perpendicular to the plane of the
array are additive to make a large signal. It is a matter of radiator
lengths and currents.

That is for a radiator based around intercoupling of radiators not one
based on radiation per unit length of radiator
The "large" signal is a resuly of how the radiation is arranged. It
does not create extra radiation it just removes radiation fro one
arear
to supplement radiation in other areas. It does not create more
radiation per radiator unit length

Now consider a small diameter coil as a radiator.

A loop radiator or did you mean a coil?

It is called an radial
mode helix because radiation is radial (perpendicular to the axis of the
coil).

No. That is definitely not true!



It has two extremes. If collapsed, the coil becomes a single
loop.

Wire stays the same length ala apples with apples


If stretched to its maximum, the coil becomes a straight wire.

Ok. still the same amount of wire


If
controlled so that the same magnitude and direction of current flows in
all configurations, the straight-wire version of this coil should
produce the greatest radiated field strength perpendicular to the coil
axis in the far field.


This doesn't radiate more per unit energy supplied. Ther is no total
increase of radiation per energy put in.

Hmm so now you are moving away from total radiation to a robbing Peter
to pay Paul situation
So your radiator is very lossy as much as it has gain, which adds up
to total radiation
per unit length

You forgot to make your point. My antenna with the same wire length
has the same radiation as yours does per unit length of radiator
so in your casev some how the ratio root LC became smaller while the
wire stayed the same lengthj!
How did that happen?

You are saying that a straight radiator produces more radiation per
unit length than any other antenna that does not have a straight
position such that the radiation per unit length reduces the
efficiency of the radiator the ability of producing radiation.

So this is where we part

since for a given length in equilibrium root LC is always the same
thus so is the radiation. Is this a law that I am violating?

What does the law state?

RH this is my last shot of trying to analyse what you are saying that
leads to the demise of my antenna.
Now be specific for once and respond to each which I have high ligted.
And as a final comment describe how one helix antenna radiates more
than two helix anteena made of opposite polarisation because you
continue to suggest this despite the fact we have doubled the wire!.
Let us come to finality with respect to what you have been pushing for
the last decade,

P.S I am in St Louis for a get away and it is to hot and humid to go
out. Makes sense?


Best regards, Richard Harrison, KB5WZI