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Ch3 5-El FD-Yagi - OPTimized
Ch3 (60-66 MHz) 5-Element Folded-Dipole Yagi, Optimized with nikiml's Python Scripts, analyzed using 4nec2.
If using a Metal Boom, be sure to calculate Boom Corrections (see Yagi Intro webpage).

a) AWG12 Copper Wire:
On Ch3, Raw Gain = 8.8 to 10.0 dBi, F/B & F/R Minimum = 12.4 dB and SWR (300-ohms) Under 2.7.
Boom Length = 136.4-in.

b) Quarter Inch Copper Tubing (QICT) or Braided-Shield in RG-59 Coax (insulation can be left on).
On Ch3, Raw Gain = 9.1 to 10.0 dBi, F/B & F/R Minimum = 13.1 dB and SWR (300-ohms) Under 2.0.
Boom Length = 160.2-in.

Note there is very little difference between QICT and AWG12 versions.
Date(s): 25 Jul2013. Album by holl_ands. 1 - 24 of 24 Total. 5676 Visits.
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Ch3 5-El FD-Yagi (AWG12) - OPT
3D View


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Ch3 5-El FD-Yagi (AWG12) - OPT
Front View
[1 large square = 12.5 inches]


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Ch3 5-El FD-Yagi (AWG12) - OPT
Top View
[1 large square = 12.5 inches]


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Ch3 5-El FD-Yagi (AWG12) - OPT
Raw Gain = 8.8 to 10.0 dBi on Ch3
F/B & F/R Minimum = 12.4 dB on Ch3


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Ch3 5-El FD-Yagi (AWG12) - OPT
SWR (300-ohms) Under 2.7 on Ch3


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Ch3 5-El FD-Yagi (AWG12) - OPT
Impedance on Ch3


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Ch3 5-El FD-Yagi (AWG12) - OPT
Azimuthal Pattern at 60 MHz


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Ch3 5-El FD-Yagi (AWG12) - OPT
Azimuthal Pattern at 63 MHz


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Ch3 5-El FD-Yagi (AWG12) - OPT
Azimuthal Pattern at 66 MHz


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Ch3 5-El FD-Yagi (AWG12) - OPT
Side View
[1 large square = 12.5 inches]


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DOC11
Ch3 5-El FD-Yagi (AWG12) - OPT
4nec2 File


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DOC12
Ch3 5-El FD-Yagi (AWG12) - OPT
Contents of Python Control *.bat text File


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Ch3 5-El FD-Yagi (QICT) - OPT
3D View


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Ch3 5-El FD-Yagi (QICT) - OPT
Front View
[1 large square = 12.5 inches]


Enlarge photo 15
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Ch3 5-El FD-Yagi (QICT) - OPT
Top View
[1 large square = 12.5 inches]


Enlarge photo 16
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Ch3 5-El FD-Yagi (QICT) - OPT
Raw Gain = 9.1 to 10.0 dBi on Ch3
F/B & F/R Minimum = 13.1 dB on Ch3


Enlarge photo 17
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Ch3 5-El FD-Yagi (QICT) - OPT
SWR (300-ohms) Under 2.0 on Ch3


Enlarge photo 18
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Ch3 5-El FD-Yagi (QICT) - OPT
Impedance on Ch3


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Ch3 5-El FD-Yagi (QICT) - OPT
Azimuthal Pattern at 60 MHz


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Ch3 5-El FD-Yagi (QICT) - OPT
Azimuthal Pattern at 63 MHz


Enlarge photo 21
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Ch3 5-El FD-Yagi (QICT) - OPT
Azimuthal Pattern at 66 MHz


Enlarge photo 22
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Ch3 5-El FD-Yagi (QICT) - OPT
Side View
[1 large square = 12.5 inches]


Enlarge Microsoft Word Document 23
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DOC23
Ch3 5-El FD-Yagi (QICT) - OPT
4nec2 File


Enlarge Microsoft Word Document 24
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DOC24
Ch3 5-El FD-Yagi (QICT) - OPT
Contents of Python Control *.bat text File


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