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Hi-VHF Bowties - No Reflector
Hi-VHF Four-Whisker, Six-Whisker, Enclosed and Indented Bowties analyzed using 4nec2.
Performance on Ch2-6 + FMBand was also analyzed.  They continue to operate as bi-directional Dipoles with low Gain and much higher SWR on the lower channels.

Six-Whisker Bowtie had better Raw Gain than Four-Whisker and much better SWR than either Four-Whisker, Enclosed or Indented Bowties.
Tine Separation is between upper and lower times.

Raw Gain and Azimuthal Gain Patterns were significantly worse for Enclosed and Indented Bowties.
Date(s): 2 Apr 2010. Album by holl_ands. 1 - 61 of 61 Total. 7420 Visits.
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Hi-VHF Six-Whisker Bowtie - Front View (21"Hx69"W)
All Whisker Lengths are the Same - 33-in.
Tine Separation = 21-in, Feedline Separation = 3-in.
Negligible impact if shorten middle for same width.

[1 small box = 1-inch.]


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Hi-VHF Six-Whisker Bowtie - Hi-VHF Raw Gain

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Hi-VHF Six-Whisker Bowtie
Hi-VHF SWR (300-ohm) is improved


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Hi-VHF Six-Whisker Bowtie
Pattern at 174 MHz


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Hi-VHF Six-Whisker Bowtie
Pattern at 198 MHz


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Hi-VHF Six-Whisker Bowtie
Pattern at 216 MHz


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Hi-VHF Six-Whisker Bowtie
Ch2-FM Raw Gain


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Hi-VHF Six-Whisker Bowtie
Ch2-FM SWR (300-ohms)


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Hi-VHF Six-Whisker Bowtie
Ch2-FM Impedance


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Hi-VHF Six-Whisker Bowtie
Ch2 Azimuthal Pattern


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Hi-VHF Six-Whisker Bowtie
Ch5 Azimuthal Pattern


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Hi-VHF Six-Whisker Bowtie
FM Azimuthal Pattern


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Hi-VHF Six-Whisker Bowtie
UHF Raw Gain: 6-7 dBi over most of Band,
but directed toward DIAGONALS with
Gain Hole in middle of the Band


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Hi-VHF Six-Whisker Bowtie
UHF SWR (300-ohms) Under 4.8
Excessive only on low and mid freqs


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Hi-VHF Six-Whisker Bowtie
UHF Impedance


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Hi-VHF Six-Whisker Bowtie
Pattern at 470 MHz


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Hi-VHF Six-Whisker Bowtie
Pattern at 530 MHz


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Hi-VHF Six-Whisker Bowtie
Pattern at 590 MHz


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Hi-VHF Six-Whisker Bowtie
Pattern at 590 MHz


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Hi-VHF Six-Whisker Bowtie
Pattern at 698 MHz


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Hi-VHF Six-Whisker Bowtie
Pattern at 806 MHz


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Hi-VHF Four-Whisker Bowtie - Front View
All Whisker Lengths are the Same - 33-in.
Tine Separation = 17-in, Feedline Separation = 3-in.
[1 small box = 1-inch.]


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Hi-VHF Four-Whisker Bowtie - Hi-VHF Raw Gain

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Hi-VHF Four-Whisker Bowtie
Hi-VHF SWR (300-ohm) is higher than desired


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Hi-VHF Four-Whisker Bowtie
Pattern at 174 MHz


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Hi-VHF Four-Whisker Bowtie
Pattern at 198 MHz


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Hi-VHF Four-Whisker Bowtie
Pattern at 216 MHz


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Hi-VHF Four-Whisker Bowtie
Ch2-FM Raw Gain


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Hi-VHF Four-Whisker Bowtie
Ch2-FM SWR (300-ohms)


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Hi-VHF Four-Whisker Bowtie
Ch2-FM Impedance


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Hi-VHF Four-Whisker Bowtie
Ch2 Azimuthal Pattern


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Hi-VHF Four-Whisker Bowtie
Ch5 Azimuthal Pattern


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Hi-VHF Four-Whisker Bowtie
FM Azimuthal Pattern


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Hi-VHF Enclosed Bowtie - Front View
All Whisker Lengths are the Same - 31.5-in.
Tine Separation = 15.8-in, Feedline Separation = 3-in.
[1 small box = 1-inch.]


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Hi-VHF Enclosed Bowtie - Hi-VHF Raw Gain

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Hi-VHF Enclosed Bowtie - Hi-VHF SWR (300-ohm)

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Hi-VHF Enclosed Bowtie
Pattern at 174 MHz


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Hi-VHF Enclosed Bowtie
Pattern at 198 MHz


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Hi-VHF Enclosed Bowtie
Pattern at 216 MHz


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Hi-VHF Enclosed Bowtie
Ch2-FM Raw Gain


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Hi-VHF Enclosed Bowtie
Ch2-FM SWR (300-ohms)


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Hi-VHF Enclosed Bowtie
Ch2-FM Impedance


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Hi-VHF Enclosed Bowtie
Ch2 Azimuthal Pattern


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Hi-VHF Enclosed Bowtie
Ch5 Azimuthal Pattern


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Hi-VHF Enclosed Bowtie
FM Azimuthal Pattern


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Hi-VHF Indented Bowtie - Front View
All Whisker Lengths are the Same - 31.5-in.
Tine Separation = 15.8-in, Feedline Separation = 3-in.
Indent = 5.0-in.
[1 small box = 1-inch.]


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Hi-VHF Indented Bowtie - Hi-VHF Raw Gain

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Hi-VHF Indented Bowtie - Hi-VHF SWR (300-ohm)

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Hi-VHF Indented Bowtie
Pattern at 174 MHz


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Hi-VHF Indented Bowtie
Pattern at 198 MHz


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Hi-VHF Indented Bowtie
Pattern at 216 MHz


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Hi-VHF Indented Bowtie
Ch2-FM Raw Gain


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Hi-VHF Indented Bowtie
Ch2-FM SWR (300-ohms)


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Hi-VHF Indented Bowtie
Ch2-FM Impedance


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Hi-VHF Indented Bowtie
Ch2 Azimuthal Pattern


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Hi-VHF Indented Bowtie
Ch5 Azimuthal Pattern


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Hi-VHF Indented Bowtie
FM Azimuthal Pattern


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DOC58
Hi-VHF Six-Whisker Bowtie
4nec2 File


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Hi-VHF Four-Whisker Bowtie
4nec2 File


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Hi-VHF Enclosed Bowtie
4nec2 File


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Hi-VHF Indented Bowtie
4nec2 File


 
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