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 holl_ands | Home > Loop Antennas incl Folded Dipole > 
HiVHF+UHF Dreamcatcher
Wildwillie's Hi-VHF+UHF Dreamcatcher (Hourglass) Bowtie-In-Loop variant (X0498-Rev2-Wide) analyzed using 4nec2.

Excellent performance on both Hi-VHF and New UHF TV Bands, with some Gain loss & SWR mismatch
in the Old UHF Band above Ch51.

UHF Raw Gain ~ 6 to 9 dBi and SWR (300-ohms) under 3.0 (Fair).
HiVHF Raw Gain ~ 3.3 to 4.0 dBi and SWR (300-ohms) under 2.3 (Excellent).
Ch2-FM Raw Gain = 2.9 to 2.8 to 3.1 dBi and SWR (300-ohms) = 1226 to 40 is Excessive.

EDIT (25 Sept 2014): Added Ch2-FM Band Performance Charts.
Date(s): 20 Feb 2011. Album by holl_ands. 1 - 30 of 30 Total. 12887 Visits.
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HiVHF+UHF Dreamcatcher BIL - 3D View

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HiVHF+UHF Dreamcatcher BIL - Front View
[1 small box = 0.5 inch]

"that 2" gap in the middle is th..."
"anyone every check these measurement..."
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HiVHF+UHF Dreamcatcher BIL - 4nec2 File

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HiVHF+UHF Dreamcatcher BIL
UHF Raw Gain ~ 6 to 9 dBi


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HiVHF+UHF Dreamcatcher BIL
UHF SWR (300-ohms) Under 3.0


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HiVHF+UHF Dreamcatcher BIL
UHF Impedance


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HiVHF+UHF Dreamcatcher BIL
Azimuthal Pattern at 470 MHz


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HiVHF+UHF Dreamcatcher BIL
Azimuthal Pattern at 590 MHz


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HiVHF+UHF Dreamcatcher BIL
Azimuthal Pattern at 698 MHz


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HiVHF+UHF Dreamcatcher BIL
Azimuthal Pattern at 734 MHz


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HiVHF+UHF Dreamcatcher BIL
Azimuthal Pattern at 770 MHz


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HiVHF+UHF Dreamcatcher BIL
Azimuthal Pattern at 806 MHz


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HiVHF+UHF Dreamcatcher BIL
TOTAL 3D Raw Gain Pattern at 584 MHz


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HiVHF+UHF Dreamcatcher BIL
Horizontal 3D Raw Gain Pattern at 584 MHz


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HiVHF+UHF Dreamcatcher BIL
Vertical 3D Raw Gain Pattern at 584 MHz


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HiVHF+UHF Dreamcatcher BIL
HiVHF Raw Gain ~ 3.3 to 4.0 dBi


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HiVHF+UHF Dreamcatcher BIL
HiVHF SWR (300-ohms) Under 2.3


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HiVHF+UHF Dreamcatcher BIL
HiVHF Impedance


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HiVHF+UHF Dreamcatcher BIL
Azimuthal Pattern at 174 MHz


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HiVHF+UHF Dreamcatcher BIL
Azimuthal Pattern at 198 MHz


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HiVHF+UHF Dreamcatcher BIL
Azimuthal Pattern at 216 MHz


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HiVHF+UHF Dreamcatcher BIL
3D Total Gain Pattern at 198 MHz


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HiVHF+UHF Dreamcatcher BIL
3D Horiz. Gain Pattern at 198 MHz


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HiVHF+UHF Dreamcatcher BIL
3D Vertical Gain Pattern at 198 MHz


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HiVHF+UHF Dreamcatcher BIL
Ch2-FM Raw Gain = 2.9 to 2.8 to 3.1 dBi


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HiVHF+UHF Dreamcatcher BIL
Ch2-FM SWR (300-ohms) = 1626 to 40


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HiVHF+UHF Dreamcatcher BIL
Ch2-FM Impedance


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HiVHF+UHF Dreamcatcher BIL
Azimuthal Pattern at 54 MHz


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HiVHF+UHF Dreamcatcher BIL
Azimuthal Pattern at 84 MHz


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HiVHF+UHF Dreamcatcher BIL
Azimuthal Pattern at 108 MHz


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Hope everything is well my friend
 - 
Wildwillie, Fri, 8 Dec 2017 7:26PM
Feb 22 I assembled 25" DIA copy in Sogod,Cebu which is 58KM from Cebu City behind a mountain range. Performed well on CH3,CH7,and CH27 with a preamp. I used 1/4" copper tube. The outer ring was reinforced with 10gage steel wire inside tube and sodered close. This provided a rigid ring to suspend the other parts without any other fasteners except the  2 terminal clamps.
 - 
Sam Wilson, Wed, 23 Mar 2011 8:15PM