Mensaje originado el: 30/07/10 a las: 23:08 z From: G8MNY@GB7CIP.#32.GBR.EU To : TECH@WW FOUR ELEMENT QUAD - FULLERTON RADIO CLUB It is supposedly equal to a Cushcraft 11 element beam. LR 21" per side LT 20.51" per side 84.1" total 82.04" total Diagonal length 29.73" Diagonal length 29.01" _________________________ _________________________ |. .| |. .| | . . | | . . | | . . | | . . | | . . | | . . | | . | | . | | . . | | . . | | . . | | . . | | . . | | . . | |_________________________| |_________________________| LD - 1, 19.9" per side LD - 2, 19.7" per side 79.6" total 78.8" total Diagonal length 28.14" Diagonal length 27.82" _________________________ _________________________ |. .| |. .| | . . | | . . | | . . | | . . | | . . | | . . | | o | | o | | . . | | . . | | . . | | . . | | . . | | . . | |_________________________| |_________________________| The antenna boom is made out of scedule 40 pvc pipe, 1"size, which is 1.5" In diameer, actual size. The boom is approximately 42" long. The cross pieces are 1/4 inch icycle flag poles mad out of fiberglass, or you could use fiberglass fence posts. TOP VIEW LOOKING DOWN LR LT LD-1 LD-2 Vertical Polarization Feed Point | V _ _ _ _ | | | | | | | | | | | | | | | | | | | | 1" PVC T | | | | | | | | | | | | | _|_|__________________|_|_________________|_|_________________|_|__ |____o__________________o_______|_|_|________o___________________o__| | | | | |_| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |_| |_| |_| |_| | <-----16.1"------> | <----12.4"------> | <-----12.4"-----> | 0.2 wavelength 0.15 wave length to build YOU FEED A QUAD FROM THE HORIZONTAL SPREADER END. I think that one o the us of infis my attempt at a construction article. How about some more homebrew projects with illustrations on packetradio. I would be interested in reports from anyone who builds this antena. Good luck and I will look forwad to your commeDoug, KI6DS @K6RAU-1 73 De John, G8MNY @ GB7CIP