This prototype antenna is three half-wave dipoles stacked vertically for 220-Mhz.

It is made from one length of #4 gauge solid copper wire, which was then formed into the proper shape.   It was then wire tied to a 8-foot length of 1-1/2" x 1/2" wood.

The wire will be removed from the wood and the wood coated with spar varnish before the wire is re-attached and the antenna is permanently mounted.

It is fed like a J-pole using a quarter-wave shorted stub.

It produces about 6-db of gain.

(Click on an image for a larger view.)

We started with a 14-foot piece of #4 gauge solid copper wire.

A pen to give you an idea of the size of the wire.

My measuring jig.  I used nails to measure the length of my bends.

The wire measuring/bending jig.

The wire measuring/bending jig.

The wire measuring/bending jig.

The wire measuring/bending jig.

The wire/antenna after being bent into its final shape.

The 1/4-wave shorted stub for tuning/matiching.

The two 1/2-wave phasing sections and the middle 1/2-wave radiator.

The top 1/2-wave phasing section and the top 1/2-wave radiator.

The bottom part of the antenna after being secured to the wooden support with nylon wire ties.

The middle section of the antenna secured to the wooden support.

How the phsing sections are secured to the wooden support.

The top part of the antenna secured to the wooden support.

The antenna standing up against my garage.

Another view  of the antenna standing against my garage.

My original drawing of the antenna with the measurements.

A better picture of the antenna standing up to give an idea of it's size.

A better picture of the antenna standing up to give an idea of it's size.

A better picture of the antenna standing up to give an idea of it's size.