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UHF 17-El Yagi with 6RR's - tfrlic
UHF 17-Element Yagi with 6 Reflector Rod Corner Reflector, per measurements by tfrlic.

Since the Active Dipole Element is very complex [which I suspect will NOT be accurately modeled using
NEC2 engine], for the below 4nec2 Analysis, I replaced it with a much simpler Folded Dipole  [adjusting
Length for desired SWR under 2.7], with the same rectangular shape that I've used in nearly all of my
Yagi Optimizations:
https://photobucket.com/gallery/user/tfralic/media/cGF0aDovSU1HXzEyOTQuanBn/?ref=
https://photobucket.com/gallery/user/tfralic/media/cGF0aDovSU1HXzEzMDIuanBn/?ref=
https://photobucket.com/gallery/user/tfralic/media/cGF0aDovYW50LmpwZw==/?ref=

UHF Raw Gain = 10.3 to 14.8 dBi, F/B & F/R Ratio Minimum = 16.4 dB (GOOD) and  SWR under 2.6 (EXCL).

=====================================
BOOM CORRECTION CAN BE IGNORED:
Back in 2013, I researched various sources to construct a BOOM CORRECTION Spreadsheet (see below).
Since the 1/2-in Wide FLAT Directors and 3/8-in Diameter Reflector Rods are attached directly to
the 1-in Square Boom, the Measured Dimensions "should" be REDUCED by about 0.25-in when modeled
in 4nec2 to account for the absence of the Boom proximity, which is NOT modeled in 4nec2.
Since Boom Correction is so small, I have ignored it...which would have moved the Frequency Response
Curve higher ever so slightly.
Date(s): 9 Feb 2019. Album by holl_ands. 1 - 16 of 16 Total. 1786 Visits.
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UHF 17-El Yagi with 6RR's - tfrlic
3D View


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UHF 17-El Yagi with 6RR's - tfrlic
Top View
[1 large square = 12.5 inches]


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UHF 17-El Yagi with 6RR's - tfrlic
Side View
[1 large square = 12.5 inches]


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UHF 17-El Yagi with 6RR's - tfrlic
Front View
[1 large square = 2.5 inches]


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UHF 17-El Yagi with 6RR's - tfrlic
Top View DETAIL
[1 large square = 2.5 inches]


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UHF 17-El Yagi with 6RR's - tfrlic
Side View DETAIL
[1 large square = 2.5 inches]


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UHF 17-El Yagi with 6RR's - tfrlic
UHF Raw Gain = 10.3 to 14.8 dBi
F/B & F/R Ratio Minimum = 16.4 dB (GOOD)


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UHF 17-El Yagi with 6RR's - tfrlic
UHF SWR (300-ohms) Under 2.6


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UHF 17-El Yagi with 6RR's - tfrlic
UHF SWR Impedance


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UHF 17-El Yagi with 6RR's - tfrlic
Elevation Pattern at 470 MHz


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UHF 17-El Yagi with 6RR's - tfrlic
Elevation Pattern at 590 MHz


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UHF 17-El Yagi with 6RR's - tfrlic
Elevation Pattern at 698 MHz


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DOC13
UHF 17-El Yagi with 6RR's - tfrlic
4nec2 File includes Dimensions


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DOC14
UHF 17-El Yagi with 6RR's - tfrlic
EVAL Summary of Performance


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UHF 17-El Yagi with 6RR's - tfrlic
EVAL *.html Performance Summary


Enlarge Microsoft Excel Spreadsheet 16
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XLS16
UHF 13-El FD-Yagi (2ReflRod) - OPT
Boom Correction Calculation Examples


 
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