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 holl_ands | Home > Bowties, Dipoles, Batwings & Rhombics > 
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. 6732 Visits.
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Lo-VHF + Hi-VHF 6-Whisker Bowtie
3D View


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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)


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Lo-VHF + Hi-VHF 6-Whisker Bowtie
4nec2 File


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Lo-VHF + Hi-VHF 6-Whisker Bowtie
Ch2-13 Raw Gain


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Lo-VHF + Hi-VHF 6-Whisker Bowtie
Ch2-13 SWR (300-ohms)


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Lo-VHF + Hi-VHF 6-Whisker Bowtie
Ch2-13 Impedance


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Lo-VHF + Hi-VHF 6-Whisker Bowtie
Azimuthal Pattern at 54 MHz (Ch2)


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Lo-VHF + Hi-VHF 6-Whisker Bowtie
Azimuthal Pattern at 72 MHz (Ch4)


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Lo-VHF + Hi-VHF 6-Whisker Bowtie
Azimuthal Pattern at 84MHz (Ch6)


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Lo-VHF + Hi-VHF 6-Whisker Bowtie
Azimuthal Pattern at 174 MHz (Ch7)


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Lo-VHF + Hi-VHF 6-Whisker Bowtie
Azimuthal Pattern at 198 MHz (Ch10)


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Lo-VHF + Hi-VHF 6-Whisker Bowtie
Azimuthal Pattern at 216 MHz (Ch13)


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