Sleeves allow for both mounting and sliding spreaders in or out to tune.Īs stated above the match was achieved by using a quarter wavelength 75ohm section at the feed point on the driven loop (available length to cut with online calculators). 1/4"hole was drilled through the center of PVC crosses, 1/4" x 3" eye bolts were reversed through the holes into the 1 1/4" PVC boom end sleeves and secured with 1/4" bolts across sleeves through the eye of eye bolts. PVC boom end sleeves were shaped to match profile of 1" PVC crosses joining center of spreaders. Steel shelf angle brackets (2 for mast to boom connection) Threaded eye bolts (2 for PVC cross spreader center joints) U-bolts (2 for boom connection to angles) Project box (1 for 75ohm match section to pl239 solder joint)
Diamond dimensions 205 driver#
Like Rick said, I didn't write down the exact lengths or the wire, nor the spacing, but they are readily available with online calculators.įor those of you who may want the info on the antennna, here it is:ġ 1/4" fence top rail (boom and top mast section)ġ 1/4" PVC (2 pieces for boom end sleeves holding spreader tees)ġ" x 48" wood dowel (inside spreaders for rigidity)ġ" PVC 4-way cross (2 for spreader center joints)ġ" x 3/4" PVC bushings (8 for spreader joints)ģ/4" PVC tee (1 for driver wire/feedline terminal connection)ġ6" wire shelf supports (8 for spreader rigidity)
Here is some info on the 2 element quad I built.