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 holl_ands | Home > Multi-Bay Bowtie Antennas > UHF 4-Bay Bowties - NO Reflectors > 
A-D DB-4 4-Bay Bowtie NO Reflector
Antennas Direct (Old ) DB-4 4-Bay Bowtie with NO Reflector analyzed using 4nec2.
Dimensions per mclapp's 4nec2 file with holl_ands modifications to adjust AGT=1.0 and various FR & RP statements:
http://www.frontiernet.net/~mclapp/Antennas/Computer%20Models/

Whisker Length=6.17-in, BowInner-Inner=7.85-in, BowInner-Outer=7.9-in,
Tine Separation=1.2-in, Feedline Separation=1.8-in, Hop=1.0-in.

Raw Gain falls off on lowest frequencies.  High SWR on low and mid frequencies.
Date(s): 13 May 2014. Album by holl_ands. 1 - 15 of 15 Total. 0 Visits.
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A-D DB-4 4-Bay Bowtie NO Reflector
3D View


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A-D DB-4 4-Bay Bowtie NO Reflector
Front View
[1 large square = 2.5-inches]


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A-D DB-4 4-Bay Bowtie NO Reflector
Side View
[1 large square = 2.5-inches]


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A-D DB-4 4-Bay Bowtie NO Reflector
UHF Raw Gain = 4.0-10.2 dBi
[Note: Slightly higher towards "Rear".]


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A-D DB-4 4-Bay Bowtie NO Reflector
UHF SWR (300-ohms) Under 4.6 is EXCESSIVE


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A-D DB-4 4-Bay Bowtie NO Reflector
UHF Impedance


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A-D DB-4 4-Bay Bowtie NO Reflector
Azimuthal Pattern at 470 MHz


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A-D DB-4 4-Bay Bowtie NO Reflector
Azimuthal Pattern at 530 MHz


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A-D DB-4 4-Bay Bowtie NO Reflector
Azimuthal Pattern at 590 MHz


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A-D DB-4 4-Bay Bowtie NO Reflector
Azimuthal Pattern at 650 MHz


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A-D DB-4 4-Bay Bowtie NO Reflector
Azimuthal Pattern at 698 MHz


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A-D DB-4 4-Bay Bowtie NO Reflector
Azimuthal Pattern at 758 MHz


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A-D DB-4 4-Bay Bowtie NO Reflector
Azimuthal Pattern at 806 MHz


Enlarge Microsoft Word Document 14
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DOC14
A-D DB-4 4-Bay Bowtie NO Reflector
4nec2 File


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A-D DB-4 4-Bay Bowtie NO Reflector
Front View
[1 large square = 1.25-inches]


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