The current out of one end of a coil of negligible length and diameter in
terms of a wavelength, for practical purposes is the same as the current
going into it - both magnitude and phase.


HOW ELSE CAN A TWO-TERMINAL DEVICE POSSIBLY BEHAVE?


And if by some impossibly remote chance you should discover something
different, so infringing all the known Laws of Physics and several more, of
what possible use could you make of it?


If you please, let's have the equations or forever hold your peace.


Of course, Cec, there never has been any chance of reforming your ideas on
the subject. But having just had a good swig of Vin de Pays D'OC, a
fortifying product of our sensible French friends 21 miles just across the
Channel, I mention it here only to protect, once and for all, professional
and amateur newcomers to the subject of coil-loaded anrennas from being led
unwittingly into the Mire of Despond and the Depths of Ignorance.


Cec, old friend, please forgive my slight tendency to exaggerate. ;o)


For newcomers wishing to appreciate the behaviour of coil-loaded vertical
antennas in a quantitative manner try down-loading in a few seconds program
LOADCOIL If you can't understand it no harm will be done.
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.................................................. ..........
Regards from Reg, G4FGQ
For Free Radio Design Software go to
http://www.btinternet.com/~g4fgq.regp
.................................................. ..........





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.................................................. ..........
Regards from Reg, G4FGQ
For Free Radio Design Software go to
http://www.btinternet.com/~g4fgq.regp
.................................................. ..........
"Cecil Moore" wrote in message
...
Art Unwin KB9MZ wrote:
No I have not, but I have made one using hardline coax
for use on the antenna when the weather gets better.
we have ice up here !.
What is the basis of your suspicioun regarding 'Q' ?

The flux from each loop flows across all the other
loops. A web search for "pancake coil" turns up some
interesting stuff including one company's claim that
their coil-on-chip process turns out coils with double
the 'Q' of pancake coils.

Incidentally, a pancake coil doesn't solve the magnitude
difference problem between current in and current out in
a standing wave antenna. It may not radiate but it certainly
has a delay through the coil which is what causes the current
in to be different from the current out in standing wave
antennas. This is explained on my web page at the bottom
of the page.
--
73, Cecil, http://www.qsl.net/w5dxp/current.htm


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73, Cecil, W5DXP