On 8/29/2010 9:45 AM, Cecil Moore wrote:


I am completely ignorant of your "double helix" so I cannot comment on
that subject. I always thought a double helix was a strand of DNA.


73, Cecil, w5dxp.com

On the helix coil, of any helical wound loading coil, or even a linear
loaded monopole/dipole, you can wind another helix, in between the turns
of the first helix, both ends are open and not connected. This tends to
expand the antennas' bandwidth, "normalize" ant impedance, etc.

That is the only thing I can figure he is referring to ...

Regards,
JS