On Thu, 23 Feb 2006 21:40:31 -0800, dansawyeror
wrote:

"a 1/2 wave segment is resonant no matter where you feed it."

Hi Dan,

I don't know where to start on that one. 1/2 wave "segment?" And
then to partition (into what? it is already describe as A segment) for
a feed - that is resonant irrespective of where it is fed? Any wire
is resonant, further elaboration does nothing to change that one
obscure characteristic - and in fact, any wire is multi-resonant.

That allows for a large single coil to 'tune' one arm of an antenna
and for the other to be adjustable.

Then it ceases to be "a 1/2 wave segment" unless the frequency is
adjusting with the length - this would seem to be obvious, but what
end is served in saying it? What distinguishes an arm from a segment?

Simulation predicts the impedance will change when it is not feed at the center,

Simulation should.

it appears to go up as the feed point is moved.

In distinct contradiction to most OCF dipoles - odd. In fact one of
the hallmarks of the OCF is being resonant in many ham bands where the
standard dipole does not.

73's
Richard Clark, KB7QHC