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Hi-VHF Quad-Trapezoid-Loop+2Bars - OPT
Hi-VHF Quad-Trapezoid-Loop+2Bars Antenna analyzed using 4nec2, formed by adding outer parts
of Chireix 2-Square to an Hourglass-Loop and then adding two Horizontal Elements attached to the Balun Feedpoint.
All dimensions determined using nikiml's Optimization Scripts, assuming AWG10 Wire Size
(which is NOT all that critical).

Hi-VHF Raw Gain = 8.8 to 9.6 to 8.8 dBi and SWR (300-ohms) Under 1.7.
Date(s): 7 Jul 2016. Album by holl_ands. 1 - 15 of 15 Total. 0 Visits.
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Hi-VHF Quad-Trapezoid-Loop+2Bars
3D View


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Hi-VHF Quad-Trapezoid-Loop+2Bars
Front View
[1 large square = 12.5 inches]


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Hi-VHF Quad-Trapezoid-Loop+2Bars
Top View
[1 large square = 12.5 inches]


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Hi-VHF Quad-Trapezoid-Loop+2Bars
Hi-VHF Raw Gain = 8.8 to 9.6 to 8.8 dBi


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Hi-VHF Quad-Trapezoid-Loop+2Bars
Hi-VHF SWR (300-ohms) Under 1.7


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Hi-VHF Quad-Trapezoid-Loop+2Bars
Hi-VHF Impedance


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Hi-VHF Quad-Trapezoid-Loop+2Bars
Azimuthal Pattern at 174 MHz


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Hi-VHF Quad-Trapezoid-Loop+2Bars
Azimuthal Pattern at 198 MHz


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Hi-VHF Quad-Trapezoid-Loop+2Bars
Azimuthal Pattern at 216 MHz


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Hi-VHF Quad-Trapezoid-Loop+2Bars
Elevation Pattern at 174 MHz
BW on Left is Correct, BW on Right is 2x20-deg


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Hi-VHF Quad-Trapezoid-Loop+2Bars
Elevation Pattern at 198 MHz
BW on Left is Correct, BW on Right is 2x15-deg


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Hi-VHF Quad-Trapezoid-Loop+2Bars
Elevation Pattern at 216 MHz
BW on Left is Correct, BW on Right is 2x15-deg


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Hi-VHF Quad-Trapezoid-Loop+2Bars
4nec2 File includes Summary of Dimensions


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Hi-VHF Quad-Trapezoid-Loop+2Bars
EVAL Summary of Performance


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Hi-VHF Quad-Trapezoid-Loop+2Bars
EVAL *.html Performance Results


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