THE FOLLOWING INFORMATION CAME TO ME FROM JOE LISMAN, K7PZH OF DOS PALOS, CA. HE GOT IT FROM RAY MILLS, W6WIM, ALSO OF DOS PALOS. THE INFORMATION SHEET WAS TITLED: 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 27.86" _________________________ _________________________ |. .| |. .| | . . | | . . | | . . | | . . | | . . | | . . | | o | | o | | . . | | . . | | . . | | . . | | . . | | . . | |_________________________| |_________________________| The antenna boom is made out of schedule 40 pvc pipe, 1" size, which is 1.5" in diameter, actual size. The boom is approximately 42" long. The cross pieces are 1/4 inch bicycle flag poles made out of fiberglass, or you could use fiberglass fence posts available from Orchard Supply Hardware stores in California. TOP VIEW LOOKING DOWN LR LT LD-1 LD-2 Vertical Polarization Feed Point | V _ _ _ _ | | | | | | | | | | | | | | | | | | | | 1" PVC T | | | | | | | | | | | | | _|_|___________________|_|__________________|_|__________________|_|_ |____o_________________o_______|_|_|________o____________________o____| | | | | |_| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |_| |_| |_| |_| | <-----16.1"-------> | <----12.04"------> | <----- 0.2 wavelength 0.15 wavelength 0.15 wavelength There it is folks and I hope that you are able to build it from these crude instructions. REMEMBER FOR VERTICAL POLARIZATION, YOU FEED A QUAD FROM THE HORIZONTAL SPREADER END. I think that one of the uses of packet should be the desimination of information. This is my attempt at a construction article. How about some more homebrew projects with illustrations on packet radio. I would be interested in reports from anyone who builds this antenna. Good luck and I will look forward to your commeDoug, KI6DS @ K6RAU-1