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 holl_ands | Home > Loop Antennas incl Folded Dipole > 
Hi-VHF Quad-Trapezoid-Loop
Hi-VHF Quad-Trapezoid-Loop Antenna analyzed using 4nec2, formed by adding outer parts
of Chireix 2-Square to an Hourglass-Loop.  All dimensions determined using nikiml's
Optimization Scripts.

Hi-VHF Raw Gain = 7.3 to 8.7 dBi and SWR (300-ohms) Under 1.6.
Date(s): 5 Jul 2016. Album by holl_ands. 1 - 14 of 14 Total. 5045 Visits.
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Hi-VHF Quad-Trapezoid-Loop
3D View


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


Enlarge Microsoft Word Document 3
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DOC3
Hi-VHF Quad-Trapezoid-Loop
4nec2 File includes Summary of Dimensions


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Hi-VHF Quad-Trapezoid-Loop
Hi-VHF Raw Gain = 7.3 to 8.7 dBi


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Hi-VHF Quad-Trapezoid-Loop
Hi-VHF SWR (300-ohms) Under 1.6


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Hi-VHF Quad-Trapezoid-Loop
Hi-VHF Impedance


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Hi-VHF Quad-Trapezoid-Loop
Azimuthal Pattern at 174 MHz


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Hi-VHF Quad-Trapezoid-Loop
Azimuthal Pattern at 198 MHz


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Hi-VHF Quad-Trapezoid-Loop
Azimuthal Pattern at 216 MHz


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Hi-VHF Quad-Trapezoid-Loop
Elevation Pattern at 174 MHz
Elevation Beamwidth is TWICE Chart Label


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Hi-VHF Quad-Trapezoid-Loop
Elevation Pattern at 198 MHz
Elevation Beamwidth is TWICE Chart Label


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Hi-VHF Quad-Trapezoid-Loop
Elevation Pattern at 216 MHz
Elevation Beamwidth is TWICE Chart Label


Enlarge Microsoft Word Document 13
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DOC13
Hi-VHF Quad-Trapezoid-Loop
EVAL Summary of Performance


Enlarge HTML Document 14
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HTML14
Hi-VHF Quad-Trapezoid-Loop
EVAL Performance Results


 
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