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UHF "Figure-8" Twin Loops - NO Refl
UHF "Figure-8" Twin Circular Loops with NO Reflector analyzed using 4nec2.

UHF Raw Gain = 5.6 to 7.4 dBi with SWR (300-ohms) under 2.4 [using QICT].

Should use 9.1-in Diameter, QICT (Quarter-Inch Copper Tubing) or larger for
New [470-698 MHz] UHF Band version (SWR under 2.4, -0.8 dB Mismatch Loss).
AWG10 NOT RECOMMENDED for UHF version, since SWR climbs as high as 3.65 (-1.71 dB Mismatch Loss).
Date(s): 6 Sep 2011. Album by holl_ands. 1 - 13 of 13 Total. 11957 Visits.
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UHF "Figure-8" Twin Circular Loops
3D View


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UHF "Figure-8" Twin Circular Loops
Front View - 9.1-in Diameter for QICT
[1 large box = 1.25-inch]


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Twin-Hoop Chireix vs "Figure-8" Twin-Loop
vs Shorted-Bowtie-Loop (SBL) vs 2-Bay Hentenna
vs 6-Whisker Bowtie vs Single Loop.
In decreasing UHF Gain order.


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UHF "Figure-8" Twin Circular Loops - QICT
UHF Raw Gain = 5.6 to 7.4 dBi


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UHF "Figure-8" Twin Circular Loops
UHF SWR (300-ohms) under 2.4 for QICT


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UHF "Figure-8" Twin Circular Loops
UHF Impedance for QICT


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UHF "Figure-8" Twin Circular Loops
Azimuthal Pattern at 470 MHz for QICT


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UHF "Figure-8" Twin Circular Loops
Azimuthal Pattern at 590 MHz for QICT


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UHF "Figure-8" Twin Circular Loops
Azimuthal Pattern at 698 MHz for QICT


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UHF "Figure-8" Twin Circular Loops
UHF Raw Gain for AWG10


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UHF "Figure-8" Twin Circular Loops
UHF Raw Gain for AWG10


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UHF "Figure-8" Twin Circular Loops
UHF Raw Gain for AWG10


Enlarge Microsoft Word Document 13
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DOC13
UHF "Figure-8" Twin Circular Loops
4nec2 File for QICT (Quarter-Inch Copper Tubing)


 
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So glad I found this site. Now receiving 46 channels (Hamilton, Windsor Ontario, Cleveland Ohio, Detroit Michigan) using loops!
Ty ty ty!
 - 
G, Tue, 18 Dec 2018 6:00PM