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holl_ands | Home > Stacked Antennas > Horizontally Stacked UHF Antennas > Browse:Horiz-Stack 2xFF6 + VDAR + HHHHoriz-Stack 2xFF4 + DAR + HHHHoriz-Stack 2xFF4 + DoubleAng Refl - RFCHoriz-Stack FF4+DAR Angled Against WallHoriz-Stacked CM4221HD's - RF CombinerHoriz-Stck 2xCM4221HD Hacked - NULL BEAMHoriz-Stack UHF Hourglass-Loop - NO ReflHoriz-Stack UHF Hourglass-Loop + 15RR
Horiz-Stack UHF Hourglass-Loop + 15RR 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. Date(s): 11 Jul 2014. Album by holl_ands. 1 - 15 of 15 Total. 4942 Visits.
enlarge 171KB, 856x1024 1 H-Stack UHF Hourglass-Loop + 15RR 3D View enlarge 216KB, 1024x690 2 H-Stack UHF Hourglass-Loop + 15RR Front View [1 large square = 5 inches] enlarge 114KB, 411x1024 3 H-Stack UHF Hourglass-Loop + 15RR Top View [1 large square = 5 inches] enlarge 192KB, 1024x675 4 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 5 H-Stack UHF Hourglass-Loop + 15RR UHF SWR (300-ohms) under 2.7 enlarge 226KB, 1024x675 6 H-Stack UHF Hourglass-Loop + 15RR UHF Impedance enlarge 303KB, 1024x1024 7 H-Stack UHF Hourglass-Loop + 15RR Azimuthal Pattern at 470 MHz enlarge 302KB, 1024x1024 8 H-Stack UHF Hourglass-Loop + 15RR Azimuthal Pattern at 530 MHz enlarge 303KB, 1024x1024 9 H-Stack UHF Hourglass-Loop + 15RR Azimuthal Pattern at 590 MHz enlarge 302KB, 1024x1024 10 H-Stack UHF Hourglass-Loop + 15RR Azimuthal Pattern at 650 MHz enlarge 303KB, 1024x1024 11 H-Stack UHF Hourglass-Loop + 15RR Azimuthal Pattern at 698 MHz enlarge 304KB, 1024x1024 12 H-Stack UHF Hourglass-Loop + 15RR Azimuthal Pattern at 758 MHz enlarge 304KB, 1024x1024 13 H-Stack UHF Hourglass-Loop + 15RR Azimuthal Pattern at 806 MHz enlarge 36KB, 791x1024 14 H-Stack UHF Hourglass-Loop + 15RR 4nec2 File enlarge 140KB, 503x1024 15 H-Stack UHF Hourglass-Loop + 15RR Side View [1 large square = 5 inches]
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