RE: 30' PVC Wire Wound All-Band Vertical

I have built a number of antennas, including verticals, over the years. Although you could build a mostly single band antenna as you describe, it might be better to use parallel quarter wave wires for the bands you would like to work on.

I found that as I added more bands, I did have more interaction between the added elements, but it actually worked quite well when doing an A/B comparison to other antennas.

To reduce the number of wires, I have used conventional dipole traps. This will also shorten the antenna without too much loss and make it more manageable up to 40 meters. Your height will work well for that band in particular. To work on 160 meters, you might want to consider using a single wire to the top of the mast and then install a 40 meter trap and continue more horizontally as an "L" for 160. You may find this more efficient than the wire wrapped tubing. Some bands will work as third harmonics (40/15).

Although I could have any antennas I want due to my location and Extra Class ham wife, we have pretty much settled on a coax fed inverted vee dipole for 80 meters with apex at about 35 feet, and a Butternut vertical out about 150 feet from the house with buried coax feed. I use the Butternut for most bands except 80. It works exceptionally well on 40/30/20 with a bit over 30 radials that are intermixed lengths from 30 to 100 feet. To then use that radial field and feedline for 160, I angle a wire away from the Butternut feed point using an alligator clip in case something goes wrong with my nearby approximately 30 foot vertical support. From there the wire goes to a nearby tree to get about 120 feet to make the "L" quarter wave antenna. This antenna is also used on 60 meters and generally performs surprisingly well compared with a low 60 meter dipole

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