This antenna is resonate at 5Ø ohms, and requires no tuner on most bands. On 1Ø meters it is good in the SSB portion of the band, but will not work above 28.9 without a tuner.
The dipole is mounted at about 35 feet off the ground. It is suspended with nylon twine, between a mast mounted on my roof, and a back yard corner tree, some 4Ø feet away. I used small pulleys at the tree, and on the mast, so I could lower the antenna if needed.
The antenna was mounted and tuned at a lower level, and then raised to it's present position. Raising it changed the setting only slightly.
To separate and evenly spread the antenna elements, I cut up a couple of 1Ø foot pieces of PCV refrigerator water line, and drilled them for the wire elements to pass through.
The separators are held in place with short pieces of #14 un-insulated electrical wire wrapped around the antenna wire and separator.
I don't recommend supporting the ends with wire and insulators. If possible use nylon twine or rope, and if possible, keep the antenna ends away from metal objects.
A small amount of the 6, 1Ø and 12 meter elements extends past the spreaders for alignment purposes. Alignment of the 17 meter antenna involves re-wrapping the wire ends on the insulators, if you cut it too short, you can wrap and solder some short pieces off the ends at a point before the wire wraps around the insulator.
I recommend painting the spreaders flat black to help protect them from sunlight, and help hide the antenna. I spaced the spreaders out about every 18 inches. I spaced the elements 2 inches apart on the spreaders. You can space the elements anything over 1 inch, but they must be uniform.
Element lengths are measured from the center insulator support eyelet to the end. I started with these lengths, and checked VSWR, and tuned each element in the following order: 17 meters= 13 feet, 12 meters= 9 feet 6-1/2 inches, 1Ø meters= 8 feet 5-1/2 inches, and 6 meters= 58 inches.
To tune each element to my favorite frequency, I then clipped each dipole at both ends, 1/4 to 1/2 inch at a time, checking VSWR every time. Then, re-check all elements in order, and re-tune if necessary.