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holl_ands | Home > Stacked Antennas > Vertically Stacked UHF Antennas > Browse:UHF Stacked Antennas Comparison ChartsVert-Stack FF6 + DoubleAngleRefl.Vert-Stack FF4 + DoubleAngleRefl.Vert-Stack FF4 SingleAngleRefl SidelobesVert-Stack M4 (9.5x9) + DoubleAngleRefl.Vert-Stack M4 (9.5x9) + NO Refl. + HHHUHF Vert-Stack CM4221 4-Bays - OPTUHF Vertical Stacked A-D 91XGUHF V-Stack 8-El FD-Yagi w. 2RR Ea - OPTVert-Stack UHF Hourglass-Loop - NO ReflV-Stack UHF Hourglass-Loop + 15RRV-Stack UHF Quad-Trap-Loop - 15RR
V-Stack UHF Quad-Trap-Loop - 15RR Vertical Stack of UHF Quad-Trapezoid-Loops with 15 Reflector Rods analyzed using 4nec2 after determining Optimum Dimensions for the Holl_ands Vertical Harness using nikiml's Python Optimization Scripts with NO change to individual Optimized QTL Dimensions. a) UHF Quad-Trap-Loop with 15 Reflector Rods (UHF ONLY Optimization): UHF Raw Gain = 13.1 dBi, F/B & F/R Ratio Min = 18.0 dB and SWR (300-ohms) under 2.9. Hi-VHF Raw Gain = 7.5 to 8.6 to 6.0 dBi HIGHER TO REAR, F/B & F/R Ratio = 3.3 to 13.0 to 9.3 dB and SWR (300-ohms) = 520 to 1.6 to 5.1 is EXCESSIVE over MOST of the Hi-VHF Band. Hi-VHF Raw Gain = 4.3 to -6.8 to -3.3 dBi FORWARD [WIDER RR's should help.] b) UHF Quad-Trap-Loop with 15 Reflector Rods (Hi-VHF & UHF Optimization): T.B.D. Date(s): 30 Dec 2014. Album by holl_ands. 1 - 24 of 24 Total. 1945 Visits.
enlarge 102KB, 473x1024 1 V-Stack UHF Quad-Trap-Loop - 15RR 3D View Circle at Center Represents Balun Location enlarge 194KB, 510x1024 2 V-Stack UHF Quad-Trap-Loop - 15RR Front View [1 large square = 5-inches] enlarge 107KB, 312x1024 3 V-Stack UHF Quad-Trap-Loop - 15RR Side View HVH is 0.5-in behind Quad-Trap-Loops [1 large square = 5-inches] enlarge 99KB, 711x1024 4 V-Stack UHF Quad-Trap-Loop - 15RR 3D View DETAIL enlarge 259KB, 761x1024 5 V-Stack UHF Quad-Trap-Loop - 15RR Front View DETAIL [1 large square = 2.5-inches] enlarge 118KB, 376x1024 6 V-Stack UHF Quad-Trap-Loop - 15RR Side View DETAIL [1 large square = 2.5-inches] enlarge 190KB, 1024x741 7 V-Stack UHF Quad-Trap-Loop - 15RR UHF Raw Gain = 13.1 dBi UHF F/B & F/R Ratio Min = 18.0 dB enlarge 182KB, 1024x741 8 V-Stack UHF Quad-Trap-Loop - 15RR UHF SWR (300-ohms) under 2.9 enlarge 227KB, 1024x741 9 V-Stack UHF Quad-Trap-Loop - 15RR UHF Impedance enlarge 301KB, 1024x1024 10 V-Stack UHF Quad-Trap-Loop - 15RR Azimuthal Pattern at 470 MHz enlarge 301KB, 1024x1024 11 V-Stack UHF Quad-Trap-Loop - 15RR Azimuthal Pattern at 530 MHz enlarge 301KB, 1024x1024 12 V-Stack UHF Quad-Trap-Loop - 15RR Azimuthal Pattern at 590 MHz enlarge 300KB, 1024x1024 13 V-Stack UHF Quad-Trap-Loop - 15RR Azimuthal Pattern at 650 MHz enlarge 301KB, 1024x1024 14 V-Stack UHF Quad-Trap-Loop - 15RR Azimuthal Pattern at 698 MHz enlarge 299KB, 1024x1024 15 V-Stack UHF Quad-Trap-Loop - 15RR Azimuthal Pattern at 758 MHz enlarge 303KB, 1024x1024 16 V-Stack UHF Quad-Trap-Loop - 15RR Azimuthal Pattern at 806 MHz enlarge 36KB, 791x1024 17 V-Stack UHF Quad-Trap-Loop - 15RR 4nec2 File includes Summary of Dimensions enlarge 121KB, 498x1024 18 V-Stack UHF Quad-Trap-Loop - 15RR Top View [1 large square = 2.5-inches] enlarge 166KB, 1024x741 19 V-Stack UHF Quad-Trap-Loop - 15RR Hi-VHF Raw Gain = 7.5 to 8.6 to 6.0 dBi to REAR Hi-VHF F/B & F/R Ratio = 3.3 to 13.0 to 9.3 dB enlarge 118KB, 1152x497 20 V-Stack UHF Quad-Trap-Loop - 15RR Hi-VHF Raw Gain = 4.3 to -6.8 to -3.3 dBi FORWARD enlarge 202KB, 1024x741 21 V-Stack UHF Quad-Trap-Loop - 15RR Hi-VHF SWR (300-ohms) = 520 to 1.6 to 5.1 enlarge 306KB, 1024x1024 22 V-Stack UHF Quad-Trap-Loop - 15RR Azimuthal Pattern at 174 MHz enlarge 306KB, 1024x1024 23 V-Stack UHF Quad-Trap-Loop - 15RR Azimuthal Pattern at 198 MHz enlarge 304KB, 1024x1024 24 V-Stack UHF Quad-Trap-Loop - 15RR Azimuthal Pattern at 216 MHz
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