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 holl_ands | Home > Multi-Bay Bowtie Antennas > UHF 8-Bay Bowties - If NO Reflectors > 
CM4228HD No Reflector + HHH
CM4228HD with NO Reflector and HHH (Holl_ands Horizontal Harness) analyzed using 4nec2,
SAME version as OPTIMIZED earlier with 16 Reflector Rods.  Note that HHH "Reflector" improves Forward Gain a bit.

UHF Raw Gain = 11.7 to 13.8 dBi, F/B & F/R Ratio = 1.6 to 0.4 dB and SWR (300-ohms) Under 2.8 (Good).
Hi-VHF Raw Gain = 3.6 to 5.1 dBi, F/B & F/R Ratio = 1.1 to 0.9 dB and SWR (300-ohms) Under 3.0 (a bit High).
Date(s): 20 Oct 2015. Album by holl_ands. 1 - 21 of 21 Total. 11346 Visits.
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Enlarge photo 1
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CM4228HD No Reflector + HHH
3D View


Enlarge photo 2
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CM4228HD No Reflector + HHH
Front View
[1 Large Square = 2.5 inches]


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CM4228HD No Reflector + HHH
Top View
[1 Large Square = 2.5 inches]


Enlarge photo 4
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CM4228HD No Reflector + HHH
UHF Raw Gain = 11.7 to 13.9 dBi
UHF F/B & F/R Ratio = 1.6 to 0.4 dB


Enlarge photo 5
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CM4228HD No Reflector + HHH
UHF SWR (300-ohms) Under 2.8


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CM4228HD No Reflector + HHH
UHF Impedance


Enlarge photo 7
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CM4228HD No Reflector + HHH
Azimuthal Pattern at 470 MHz


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CM4228HD No Reflector + HHH
Azimuthal Pattern at 530 MHz


Enlarge photo 9
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CM4228HD No Reflector + HHH
Azimuthal Pattern at 590 MHz


Enlarge photo 10
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CM4228HD No Reflector + HHH
Azimuthal Pattern at 650 MHz


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CM4228HD No Reflector + HHH
Azimuthal Pattern at 698 MHz


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CM4228HD No Reflector + HHH
Side View
[1 Large Square = 2.5 inches]


Enlarge photo 13
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CM4228HD No Reflector + HHH
Hi-VHF Raw Gain = 3.6 to 5.1 dBi
Hi-VHF F/B & F/R Ratio = 1.1 to 0.9 dB


Enlarge photo 14
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CM4228HD No Reflector + HHH
Hi-VHF SWR (300-ohms) Under 3.0


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CM4228HD No Reflector + HHH
Hi-VHF Impedance


Enlarge photo 16
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CM4228HD No Reflector + HHH
Azimuthal Pattern at 174 MHz


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CM4228HD No Reflector + HHH
Azimuthal Pattern at 198 MHz


Enlarge photo 18
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CM4228HD No Reflector + HHH
Azimuthal Pattern at 216 MHz


Enlarge Microsoft Word Document 19
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CM4228HD No Reflector + HHH
4nec2 File Includes Summary of Dimensions


Enlarge Microsoft Word Document 20
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CM4228HD No Reflector + HHH
EVAL Summary of Performance


Enlarge HTML Document 21
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CM4228HD No Reflector + HHH
EVAL *.html Performance Summary
Incl. Interactive 3D Model to View Dimensions


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