Art Unwin wrote:

The helix is four foot long and a foot diameter. The base of the
reflector is 1.5 feet
snip
Art

A 1 foot diameter helix would be a design for the 1 meter band, not 160.
You need to scale it up just a bit.

The diameter should be about 50 meters. The reflector should be maybe
150 meters in diameter. This is not going to fit in your back yard.

tom
K0TAR