Cecil Moore wrote in message ...
Jack Smith wrote:
My understanding of the particular question being debated is that the
loading coil is physically small and at the frequency in question may
be safely treated as a lumped element, and that some have said that
current-in current-out.

A 200 cubic inch 75m bugcatcher coil is NOT physically small and should
NOT be treated as a lumped element if one desires real-world results.

Cecil
When I first started working on my antenna design I didn't look at a
coil
as representing degrees per se. What I did was to ascertain the
resonant
frequency and the Q of the coil and transpose this into a length
that resonated with the same Q at the original frequency. True, the
radiation per unit length is different and has to be accounted for (a
critical important factor when comparing toroids to air wound coils)
but this aproach is quite different from using the "degrees" aproach
which is not the same because of the radiation difference ( See Roy's
aproach).
This aproach was the one I took with my antenna design
and it worked very well in practice as well as being confirmed by a
"theoretical" computor programs.
This aproach then allows a tranditional aproach of viewing current
behavior as it moves thru a distributed resistance and its limited
radiation.
Is there a fallacy in this aproach ?
Appreciate any insights that you have on the above to further my
education
Best Regards
Art