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Public Gallery>holl_ands>Miscellaneous>Browse:Olivia @ Cache CreekOlivia @ Silver LegacyOlivia Newton-John concert in SF.....Pumpkin for dogsOlivia @ Feather FallsTowbe's Adventurers 2014College of the CanyonsJohn Burroughs High School StadiumCerritos College StadiumUKC GRAND CH K2'S Bad Boy HolidayVeniceEast LA CollegeLas Vegas Rock Veneer coming off 7.2014T206From_BroH-Stack UHF Hourglass-Loop + 15RRFOURTH OF JULY WEEKEND 2014Old CM4228 with Hollands Horiz HarnessApronsDog SweatersToy Rat Terrier PuppiesUKC CH Atencio's Blowing Wild of K2Led Zepagain At The Grove!Queen Nation @ The Grove of AnaheimRenovation: St. Matthew's, CharlestonUKC Ch. "PR" Slick's Whispering WindsGame Worn Football JerseysLA SANTA CECILIA AT THE RIALTO THEATRERFIModel railways 5

Horiz-Stack UHF Hourglass-Loop + 15RR Slideshow UHF Horizontally Stacked Hourglass-Loops with 15 Reflector Rods  analyzed using 4nec2 where nikiml's Python Optimization Scripts were used to Optimize dimensions of the HHH (Hollands Horizontal Harness) and  Separation between Hourglass-Loops. Alternatively, Sidelobes would be minimized with minimum Separation. Stacking Distance & dimensions of HHH wires determined using nikiml's Python Optimization Scripts: HD = 29.0-in = Horizontal Stacking Distance (Center-To-Center). HD/2 = 14.5-in, Length of Harness wires from Feedpoint to Center of each Hourglass-Loop was per above Model: Diagonal  = 4.0-in, Length from Harness Wires to each Hourglass-Loop Feedpoint. Hw = 1.875-in, Separation between Harness Wires. Xh = -4.25 = X-Axis Separation between Harness Wires and Hourglass-Loops. TOTAL HARNESS WIRE LENGTH (2 required) = 25-in = 2x8.0+2x4.0+2x0.5 (for eyelet) UHF Raw Gain = 12.6 +/- 0.1 dBi is VERY FLAT, F/B & F/R Ratio Min = 16.5 dB and SWR (300-ohms) under 2.7. 11 Jul 20141 - 15 of 15 Images5065 visitsAlbum by holl_ands

enlarge 171KB, 856x1024 H-Stack UHF Hourglass-Loop + 15RR 3D View enlarge 216KB, 1024x690 H-Stack UHF Hourglass-Loop + 15RR Front View [1 large square = 5 inches] enlarge 114KB, 411x1024 H-Stack UHF Hourglass-Loop + 15RR Top View [1 large square = 5 inches] enlarge 192KB, 1024x675 H-Stack UHF Hourglass-Loop + 15RR UHF Raw Gain = 12.6 +/- 0.1 dBi is VERY FLAT UHF F/B & F/R Ratio Minimum = 16.5 dB enlarge 193KB, 1024x675 H-Stack UHF Hourglass-Loop + 15RR UHF SWR (300-ohms) under 2.7 enlarge 226KB, 1024x675 H-Stack UHF Hourglass-Loop + 15RR UHF Impedance enlarge 303KB, 1024x1024 H-Stack UHF Hourglass-Loop + 15RR Azimuthal Pattern at 470 MHz enlarge 302KB, 1024x1024 H-Stack UHF Hourglass-Loop + 15RR Azimuthal Pattern at 530 MHz enlarge 303KB, 1024x1024 H-Stack UHF Hourglass-Loop + 15RR Azimuthal Pattern at 590 MHz enlarge 302KB, 1024x1024 H-Stack UHF Hourglass-Loop + 15RR Azimuthal Pattern at 650 MHz enlarge 303KB, 1024x1024 H-Stack UHF Hourglass-Loop + 15RR Azimuthal Pattern at 698 MHz enlarge 304KB, 1024x1024 H-Stack UHF Hourglass-Loop + 15RR Azimuthal Pattern at 758 MHz enlarge 304KB, 1024x1024 H-Stack UHF Hourglass-Loop + 15RR Azimuthal Pattern at 806 MHz enlarge 36KB, 791x1024 H-Stack UHF Hourglass-Loop + 15RR 4nec2 File enlarge 140KB, 503x1024 H-Stack UHF Hourglass-Loop + 15RR Side View [1 large square = 5 inches]