Hi,

The purpose of the coil is the following:

1) to shunt electrostatic buildup to ground, thus protecting your
receiver.
2) to provide an impedance match from 50 ohms to the very high impedance
of an electrically short whip.
3) to make the whip appear to be electrically longer than it really is.

The coil you have is pretty robust, and looks pretty good to me. I
would clean out the cobwebs, and try it out.

Oh, receivers don't much care what you use for an antenna. A long wire
strung through the air works just fine. Directivity is useful in
extreme conditions.

-Chuck Harris

Bob wrote:
Hi,
Thanks for helping,

The coil I am concerned about is the coil that is in the attached photo. It
is the coil that is at the very bottom of the 19ft aluminum whip antenna. It
is a coil that shorts out the center to the ground right at the female
coaxial connection. (sorry, forget the part number of that). Please see
attached photo of the inner workings of the base of this antenna. My
question is do I need to rebuild this coil and what does the coil do and is
it necessary. I want to use the antenna for an all band use and get up as
high as possible as I have a good tuner.