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holl_ands | Home > Multi-Bay Bowtie Antennas > Browse:UHF Multi-Bay Comparison ChartsUHF 2-Bay Bowties - NO Reflectors/UHF 2-Bay Bowties with Reflector/UHF 2-Bay SOLID Triangles - Var RR'sUHF 3-Bay Bowties - NO Reflectors/UHF 4-Bay Bowties - NO Reflectors/UHF 4-Bay Bowties with Reflector/UHF H4 2x2-Bay Bowties/HiVHF+UHF HUM4 (9.5x9) + 2Sizes ReflRodsNEW UHF FF6 No Refl - OPTNEW UHF Free-Form 6-Bay (NU-FF6) + VDARUHF FF6 Vertical 6-Bay Bowtie - NO ReflUHF Vertical 6-Bay Bowtie (FF6) + VDARUHF 8-Bay Bowties - If NO Reflectors/UHF 8-Bay Bowtie with Reflector/Hi-VHF 2-Bay Bowtie - NO ReflectorHiVHF 2-Bay - Various Reflector RodsHi-VHF 2-Bay Bowtie - FLAT Grid Refl.Hi-VHF FF4 4-Bay Bowtie - NO ReflectorHi-VHF 4-Bay Bowtie - NO ReflectorHi-VHF 4-Bay Bowtie with Reflector
UHF 2-Bay SOLID Triangles - Var RR's UHF 2-Bay SOLID Triangles (and Other Shapes) with Various Reflector Rods analyzed using 4nec2 after determining dimensions using nikiml's Python Optimization Scripts. Three versions were analyzed: SOLID Triangles, SOLID FAT Triangles and SOLID Pennants. Latter two prelim "bestx_xxx.nec file results were found while the Optimizer searched for the OPTIMUM SHAPE, presuming a Generic Octagonal Outline....but performance was a bit LESS than a simple Triangle.  Charts show Excellent UHF and Hi-VHF performance for All Triangles (and H2) compared to various other 2-Bay variations...although with narrower Beamwidths. a) 2-Bay (9.25x12.5) SOLID Triangles + 11RR: UHF Raw Gain = 12.7 to 14.9 dBi, F/B & F/R Min. = 20.8 dB and SWR (300-ohms) under 1.9. Hi-VHF Raw Gain = 8.1 to 8.3 dBi, F/B & F/R = 13.9 to 17.9 dB and SWR (300-ohms) = 88 to 36 is Excessive. SUMMARY OF DIMENSIONS: BowLength=9.25-in, BowSpacing=12.5-in, TineSep=7.5-in, FeedSep=4.0-in, ALL Elements and Feedline Wire Size = AWG10. Reflector Rod Wire Size = 0.125-in = QICT, Quarter-Inch Copper Tubing, Reflector Rod Separation behind Hourglass) = RS = 4.0-in, Reflector Rod-to-Rod Separation = RR = 2.25-in, Reflector Rod Half-Lengths = YRod = 18.625-in. ==================================== b) 2-Bay SOLID FAT Triangles + 11RR [with Optimized Generic Octagonal Shape]: USB Raw Gain = 12.2 to 14.4 to 14.3 dBi, F/B & F/R Ratio Min. = 20.8 dB and SWR (300-ohms) under 2.4. Hi-VHF Raw Gain = 7.7 to 7.9 dBi, F/B & F/R Ratio = 13.7 to 18.6 dB and SWR (300-ohms) = 86 to 38 is Excessive. ==================================== c) 2-Bay SOLID Pennants + 11RR [with Optimized Generic Octagonal Shape]: UHF Raw Gain = 12.2 to 14.5 dBi, F/B & F/R Ratio Under 18.8 dB and SWR (300-ohms) Under 1.8. Hi-VHF Raw Gain = 7.8 to 7.9 dBi, F/B & F/R = 13.7 to 19.4 dB and SWR (300-ohms) = 96 to 38 is Excessive. Date(s): 4 Mar 2015. Album by holl_ands. 1 - 69 of 69 Total. 29211 Visits.
enlarge 226KB, 1024x696 1 Comparison Charts - UHF Raw Gain 2-Bays: Triangles, H2 Bowties, Quad-Traps, Bi-Quads, Twin-Loops and Hourglass-Loops enlarge 203KB, 1024x696 2 Comparison Charts - UHF Beamwidth 2-Bays: Triangles, H2 Bowties, Quad-Traps, Bi-Quads, Twin-Loops and Hourglass-Loops enlarge 212KB, 1024x696 3 Comparison Charts - UHF SWR 2-Bays: Triangles, H2 Bowties, Quad-Traps, Bi-Quads, Twin-Loops and Hourglass-Loops enlarge 201KB, 1024x696 4 Comparison Charts - Hi-VHF Raw Gain 2-Bays: Triangles, H2 Bowties, Quad-Traps, Bi-Quads, Twin-Loops and Hourglass-Loops enlarge 164KB, 1024x696 5 Comparison Charts - Hi-VHF Beamwidth 2-Bays: Triangles, H2 Bowties, Quad-Traps, Bi-Quads, Twin-Loops and Hourglass-Loops enlarge 177KB, 1024x696 6 Comparison Charts - Hi-VHF SWR 2-Bays: Triangles, H2 Bowties, Quad-Traps, Bi-Quads, Twin-Loops and Hourglass-Loops enlarge 191KB, 1024x989 7 2-Bay SOLID Triangles + 11RR 3D View enlarge 284KB, 1024x760 8 2-Bay SOLID Triangles + 11RR Front View [1 large square = 2.5 inches] enlarge 122KB, 382x1024 9 2-Bay SOLID Triangles + 11RR Top View [1 large square = 2.5 inches] enlarge 172KB, 1024x741 10 2-Bay SOLID Triangles + 11RR UHF Raw Gain = 12.7 to 14.9 dBi UHF F/B & F/R Minimum = 20.8 dB enlarge 186KB, 1024x741 11 2-Bay SOLID Triangles + 11RR UHF SWR (300-ohms) Under 1.9 enlarge 224KB, 1024x741 12 2-Bay SOLID Triangles + 11RR UHF Impedance enlarge 299KB, 1024x1024 13 2-Bay SOLID Triangles + 11RR Azimuthal Pattern at 470 MHz enlarge 300KB, 1024x1024 14 2-Bay SOLID Triangles + 11RR Azimuthal Pattern at 530 MHz enlarge 298KB, 1024x1024 15 2-Bay SOLID Triangles + 11RR Azimuthal Pattern at 590 MHz enlarge 300KB, 1024x1024 16 2-Bay SOLID Triangles + 11RR Azimuthal Pattern at 650 MHz enlarge 300KB, 1024x1024 17 2-Bay SOLID Triangles + 11RR Azimuthal Pattern at 698 MHz enlarge 301KB, 1024x1024 18 2-Bay SOLID Triangles + 11RR Azimuthal Pattern at 758 MHz enlarge 301KB, 1024x1024 19 2-Bay SOLID Triangles + 11RR Azimuthal Pattern at 806 MHz enlarge 43KB, 791x1024 20 2-Bay SOLID Triangles + 11RR 4nec2 File contains Summary of Dimensions enlarge 137KB, 513x1024 21 2-Bay SOLID Triangles + 11RR Side View [1 large square = 2.5 inches] enlarge 170KB, 1024x741 22 2-Bay SOLID Triangles + 11RR Hi-VHF Raw Gain = 8.1 to 8.3 dBi Hi-VHF F/B & F/R = 13.9 to 17.9 dB enlarge 201KB, 1024x741 23 2-Bay SOLID Triangles + 11RR Hi-VHF SWR (300-ohms) = 88 to 36 is Excessive enlarge 217KB, 1024x741 24 2-Bay SOLID Triangles + 11RR Hi-VHF Impedance enlarge 302KB, 1024x1024 25 2-Bay SOLID Triangles + 11RR Azimuthal Pattern at 174 MHz enlarge 302KB, 1024x1024 26 2-Bay SOLID Triangles + 11RR Azimuthal Pattern at 198 MHz enlarge 303KB, 1024x1024 27 2-Bay SOLID Triangles + 11RR Azimuthal Pattern at 216 MHz enlarge 178KB, 963x1024 28 2-Bay FAT SOLID Triangles + 11RR 3D View enlarge 293KB, 1024x781 29 2-Bay FAT SOLID Triangles + 11RR Front View [1 large square = 2.5 inches] enlarge 120KB, 384x1024 30 2-Bay FAT SOLID Triangles + 11RR Top View [1 large square = 2.5 inches] enlarge 172KB, 1024x741 31 2-Bay FAT SOLID Triangles + 11RR USB Raw Gain =12.2 to 14.4 to 14.3 dBi USB F/B & F/R Ratio Min. = 20.8 dB enlarge 189KB, 1024x741 32 2-Bay FAT SOLID Triangles + 11RR USB SWR (300-ohms) Under 2.4 enlarge 227KB, 1024x741 33 2-Bay FAT SOLID Triangles + 11RR USB Impedance enlarge 300KB, 1024x1024 34 2-Bay FAT SOLID Triangles + 11RR Azimuthal Pattern = 470 MHz enlarge 299KB, 1024x1024 35 2-Bay FAT SOLID Triangles + 11RR Azimuthal Pattern = 530 MHz enlarge 299KB, 1024x1024 36 2-Bay FAT SOLID Triangles + 11RR Azimuthal Pattern = 590 MHz enlarge 301KB, 1024x1024 37 2-Bay FAT SOLID Triangles + 11RR Azimuthal Pattern = 650 MHz enlarge 302KB, 1024x1024 38 2-Bay FAT SOLID Triangles + 11RR Azimuthal Pattern = 698 MHz enlarge 301KB, 1024x1024 39 2-Bay FAT SOLID Triangles + 11RR Azimuthal Pattern = 758 MHz enlarge 303KB, 1024x1024 40 2-Bay FAT SOLID Triangles + 11RR Azimuthal Pattern = 806 MHz enlarge 45KB, 791x1024 41 2-Bay FAT SOLID Triangles + 11RR 4nec2 File Contains Summary of Dimensions enlarge 138KB, 498x1024 42 2-Bay FAT SOLID Triangles + 11RR Side View [1 large square = 2.5 inches] enlarge 162KB, 1024x741 43 2-Bay FAT SOLID Triangles + 11RR Hi-VHF Raw Gain = 7.7 to 7.9 dBi Hi-VHF F/B & F/R Ratio = 13.7 to 18.6 dB enlarge 200KB, 1024x741 44 2-Bay FAT SOLID Triangles + 11RR Hi-VHF SWR (300-ohms) = 86 to 38 is Excessive enlarge 217KB, 1024x741 45 2-Bay FAT SOLID Triangles + 11RR Hi-VSB Impedance enlarge 302KB, 1024x1024 46 2-Bay FAT SOLID Triangles + 11RR Azimuthal Pattern = 174 MHz enlarge 302KB, 1024x1024 47 2-Bay FAT SOLID Triangles + 11RR Azimuthal Pattern = 198 MHz enlarge 304KB, 1024x1024 48 2-Bay FAT SOLID Triangles + 11RR Azimuthal Pattern = 216 MHz enlarge 180KB, 972x1024 49 2-Bay SOLID Pennants + 11RR 3D View enlarge 285KB, 1024x783 50 2-Bay SOLID Pennants + 11RR Front View [1 large square = 2.5 inches] enlarge 101KB, 314x1024 51 2-Bay SOLID Pennants + 11RR Top View [1 large square = 2.5 inches] enlarge 168KB, 1024x741 52 2-Bay SOLID Pennants + 11RR UHF = 12.2 to 14.5 dBi UHF F/B & F/R Ratio Under 18.8 dB enlarge 181KB, 1024x741 53 2-Bay SOLID Pennants + 11RR UHF SWR (300-ohms) Under 1.8 enlarge 228KB, 1024x741 54 2-Bay SOLID Pennants + 11RR UHF Impedance enlarge 300KB, 1024x1024 55 2-Bay SOLID Pennants + 11RR Azimuthal Pattern at 470 MHz enlarge 299KB, 1024x1024 56 2-Bay SOLID Pennants + 11RR Azimuthal Pattern at 530 MHz enlarge 299KB, 1024x1024 57 2-Bay SOLID Pennants + 11RR Azimuthal Pattern at 590 MHz enlarge 299KB, 1024x1024 58 2-Bay SOLID Pennants + 11RR Azimuthal Pattern at 650 MHz enlarge 304KB, 1024x1024 59 2-Bay SOLID Pennants + 11RR Azimuthal Pattern at 698 MHz enlarge 300KB, 1024x1024 60 2-Bay SOLID Pennants + 11RR Azimuthal Pattern at 758 MHz enlarge 300KB, 1024x1024 61 2-Bay SOLID Pennants + 11RR Azimuthal Pattern at 806 MHz enlarge 44KB, 791x1024 62 2-Bay SOLID Pennants + 11RR 4nec2 File contains Summary of Dimensions enlarge 135KB, 495x1024 63 2-Bay SOLID Pennants + 11RR Side View [1 large square = 2.5 inches] enlarge 163KB, 1024x741 64 2-Bay SOLID Pennants + 11RR Hi-VHF Raw Gain = 7.8 to 7.9 dBi Hi-VHF F/B & F/R = 13.7 to 19.4 dB enlarge 187KB, 1024x741 65 2-Bay SOLID Pennants + 11RR Hi-VHF SWR (300-ohms) = 96 to 38 enlarge 217KB, 1024x741 66 2-Bay SOLID Pennants + 11RR Hi-VHF Impedance enlarge 301KB, 1024x1024 67 2-Bay SOLID Pennants + 11RR Azimuthal Pattern at 174 MHz enlarge 301KB, 1024x1024 68 2-Bay SOLID Pennants + 11RR Azimuthal Pattern at 198 MHz enlarge 303KB, 1024x1024 69 2-Bay SOLID Pennants + 11RR Azimuthal Pattern at 216 MHz
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