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holl_ands | Home > Bowties, Dipoles, Batwings & Rhombics > Browse:UHF Stick Dipole - No ReflectorUHF Bowties - NO ReflectorUHF Fractal Bowtie - No ReflectorUHF CM4248 Folded Dipole Bowtie (ONLY)91XG Dipole ONLY & Dipole+First DirectorUHF Batwing - No Refl & Screen Grid ReflUHF Small Rhombic StackUHF Double RhomboidVHF Stick Dipoles incl Horiz.Rabbit-EarsHi-VHF+UHF Stick Dipole - No ReflectorHi-VHF+UHF "VEE" Stick DipoleHi-VHF Bowties - No ReflectorLo+Hi-VHF 1-Bay Bowtie - No Reflector
Lo+Hi-VHF 1-Bay Bowtie - No Reflector Lo-HiVHF (Ch2-13) 1-Bay Bowtie analyzed using 4nec2 after optimizing via nikimil's Python scripts. NO REFLECTOR RODS: Ch2-6 Raw Gain = about 3.5 to 5.0 dBi and SWR (300-ohms) Under 2.7. Ch7-13 Raw Gain = about 4.0 to 5.0 dBi and SWR (300-ohms) Under 2.7. Provides more Gain than Stick Dipole or Folded Dipole across BOTH Ch2-6 Lo-VHF and Ch7-13 Hi-VHF Bands. However, narrow beamwidth on Ch7-13 requires careful aiming. Optimized size is BIG (15.75-ft Wide by 4.25-ft High), using 1/4-in O.D. Copper (may use larger, incl. 3/8-in Aluminum): Each of Six Whiskers = 92-inches, Top-Bottom Tine Separation = 51-inches & Feedpoint = 5-inches. Date(s): 24 Nov 2012. Album by holl_ands. 1 - 12 of 12 Total. 7203 Visits.
enlarge 65KB, 945x1024 1 Lo-VHF + Hi-VHF 6-Whisker Bowtie 3D View enlarge 144KB, 1152x400 2 Lo-VHF + Hi-VHF 6-Whisker Bowtie Front View Each Whisker = 92-inches long. Top-bottom Tine Separation = 51-inches. Feedpoint Gap = 5-inches (for 300-ohm Balun) enlarge 28KB, 791x1024 3 Lo-VHF + Hi-VHF 6-Whisker Bowtie 4nec2 File enlarge 197KB, 1152x692 4 Lo-VHF + Hi-VHF 6-Whisker Bowtie Ch2-13 Raw Gain enlarge 211KB, 1152x692 5 Lo-VHF + Hi-VHF 6-Whisker Bowtie Ch2-13 SWR (300-ohms) enlarge 266KB, 1152x692 6 Lo-VHF + Hi-VHF 6-Whisker Bowtie Ch2-13 Impedance enlarge 331KB, 1024x1024 7 Lo-VHF + Hi-VHF 6-Whisker Bowtie Azimuthal Pattern at 54 MHz (Ch2) enlarge 332KB, 1024x1024 8 Lo-VHF + Hi-VHF 6-Whisker Bowtie Azimuthal Pattern at 72 MHz (Ch4) enlarge 333KB, 1024x1024 9 Lo-VHF + Hi-VHF 6-Whisker Bowtie Azimuthal Pattern at 84MHz (Ch6) enlarge 375KB, 1024x1024 10 Lo-VHF + Hi-VHF 6-Whisker Bowtie Azimuthal Pattern at 174 MHz (Ch7) enlarge 359KB, 1024x1024 11 Lo-VHF + Hi-VHF 6-Whisker Bowtie Azimuthal Pattern at 198 MHz (Ch10) enlarge 363KB, 1024x1024 12 Lo-VHF + Hi-VHF 6-Whisker Bowtie Azimuthal Pattern at 216 MHz (Ch13)
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