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holl_ands | Home > Bi-Quad Antennas > Browse:Compare Bi-Quad PerformanceUHF Bi-Quad + 11RR - OPTUHF Bi-Quad NO Refl - khaye UHF Bi-Quad 9ReflRods - khayeHi-VHF Bi-Quad 4ReflRods - nikimlHi-VHF Bi-Quad 8ReflRods - nikimlUHF 7-El Bi-Quad Yagi - OPTUHF 7-EL Bi-Quagi - OPTUHF 8-El Bi-Quad Yagi 2ReflRods - OPTUHF 15-El Double-Quad Yagi - OPTH+U Bi-Quad+3Loops - ljhavener
UHF Bi-Quad + 11RR - OPT UHF Bi-Quad with 11 Reflector Rods analyzed using 4nec2 after determining dimensions using nikiml's Python Optimization Scripts. UHF Raw Gain = 9.8 to 11.1 dBi, F/B & F/R Ratio Min. = 18.4 dB and SWR (300-ohms) Under 2.5. Hi-VHF Raw Gain = 5.0 to 5.7 dBi, F/B & F/R Ratio = 2 to 14 dB and SWR (300-ohms) = 773 to 133 is Excessive SUMMARY OF DIMENSIONS: Feedline Separation = 2*feed = 1.0-in, Y-Coord of Outer Apex=y1 = 5.125-in, Z-Coord of Outer Apex = z1 = 6.0-in, Z-Distance from Outer Apex to Top = z2 = 3.0-in, ALL Elements AWG10 & RR QICT, RR Separation behind Hourglass = 4.25-in, Reflector Rod-to-Rod Separation = 2.125-in, RR Half-Lengths = 10.0-in. Date(s): 6 Mar 2015. Album by holl_ands. 1 - 21 of 21 Total. 8792 Visits.
enlarge 130KB, 893x1024 1 UHF Bi-Quad + 11RR - OPT 3D View enlarge 298KB, 1018x1024 2 UHF Bi-Quad + 11RR - OPT Front View [1 large square = 2.5 inches] enlarge 139KB, 552x1024 3 UHF Bi-Quad + 11RR - OPT Top View [1 large square = 2.5 inches] enlarge 187KB, 1024x741 4 UHF Bi-Quad + 11RR - OPT UHF Raw Gain = 9.8 to 11.1 dBi UHF F/B & F/R Ratio Minimum = 18.4 dB enlarge 186KB, 1024x741 5 UHF Bi-Quad + 11RR - OPT UHF SWR (300-ohms) Under 2.5 enlarge 229KB, 1024x741 6 UHF Bi-Quad + 11RR - OPT UHF Impedance enlarge 301KB, 1024x1024 7 UHF Bi-Quad + 11RR - OPT Azimuthal Pattern at 470 MHz enlarge 300KB, 1024x1024 8 UHF Bi-Quad + 11RR - OPT Azimuthal Pattern at 530 MHz enlarge 300KB, 1024x1024 9 UHF Bi-Quad + 11RR - OPT Azimuthal Pattern at 590 MHz enlarge 300KB, 1024x1024 10 UHF Bi-Quad + 11RR - OPT Azimuthal Pattern at 650 MHz enlarge 304KB, 1024x1024 11 UHF Bi-Quad + 11RR - OPT Azimuthal Pattern at 698 MHz enlarge 299KB, 1024x1024 12 UHF Bi-Quad + 11RR - OPT Azimuthal Pattern at 758 MHz enlarge 302KB, 1024x1024 13 UHF Bi-Quad + 11RR - OPT Azimuthal Pattern at 806 MHz enlarge 30KB, 791x1024 14 UHF Bi-Quad + 11RR - OPT 4nec2 File contains Summary of Dimensions enlarge 138KB, 516x1024 15 UHF Bi-Quad + 11RR - OPT Side View [1 large square = 2.5 inches] enlarge 173KB, 1024x741 16 UHF Bi-Quad + 11RR - OPT Hi-VHF Raw Gain = 5.0 to 5.7 dBi Hi-VHF F/B & F/R Ratio = 2 to 14 dB enlarge 184KB, 1024x741 17 UHF Bi-Quad + 11RR - OPT Hi-VHF SWR (300-ohms) = 773 to 133 is Excessive enlarge 250KB, 1024x741 18 UHF Bi-Quad + 11RR - OPT Hi-VHF Impedance enlarge 305KB, 1024x1024 19 UHF Bi-Quad + 11RR - OPT Azimuthal Pattern at 174 MHz enlarge 303KB, 1024x1024 20 UHF Bi-Quad + 11RR - OPT Azimuthal Pattern at 198 MHz enlarge 306KB, 1024x1024 21 UHF Bi-Quad + 11RR - OPT Azimuthal Pattern at 216 MHz
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