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UHF Folded & Tri-Folded Dipoles
UHF Folded and Tri-Folded [Bottom Fed] Dipoles analyzed using 4nec2.

UHF Folded Dipole size providing best SWR and Net Gain (470-698 MHz UHF Band):
9.25  x 1.0 inch - Quarter-Inch Copper Tubing (QICT)
9.375 x 1.0 inch - AWG10 Copper Wire
Date(s): 7 Sep 2011. Album by holl_ands. 1 - 27 of 27 Total. 14614 Visits.
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Enlarge photo 1
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UHF Folded Dipole - QICT
3D View


Enlarge photo 2
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UHF Folded Dipole - QICT
Front View
[1 small box = 0.25 inches]


Enlarge Microsoft Word Document 3
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DOC3
UHF Folded Dipole - QICT
4nec2 File


Enlarge photo 4
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4
UHF Folded Dipole - QICT
UHF Raw Gain


Enlarge photo 5
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5
UHF Folded Dipole - QICT
UHF SWR (300-ohms) Under 2.5


Enlarge photo 6
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UHF Folded Dipole - QICT
UHF Impedance


Enlarge photo 7
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UHF Folded Dipole - QICT
Azimuthal Pattern at 470 MHz


Enlarge photo 8
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UHF Folded Dipole - QICT
Azimuthal Pattern at 590 MHz


Enlarge photo 9
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UHF Folded Dipole - QICT
Azimuthal Pattern at 698 MHz


Enlarge photo 10
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UHF Folded Dipole - AWG10
3D View
AWG10, L=9.375, FW=1.0-in


Enlarge photo 11
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UHF Folded Dipole - AWG10
Front View
AWG10, L=9.375, FW=1.0-in
[1 small box = 0.25-in]
[1 big box = 1.25-in]


Enlarge Microsoft Word Document 12
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DOC12
UHF Folded Dipole - AWG10
4nec2 File


Enlarge photo 13
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13
UHF Folded Dipole - AWG10
L=9.375, FW=1.0-in
UHF Raw Gain


Enlarge photo 14
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14
UHF Folded Dipole - AWG10
L=9.375, FW=1.0-in
UHF SWR (300-ohms) under 3.1


Enlarge photo 15
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15
UHF Folded Dipole - AWG10
L=9.375, FW=1.0-in
UHF Impedance


Enlarge photo 16
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16
UHF Folded Dipole - AWG10
L=9.375, FW=1.0-in
Azimuthal Pattern at 470 MHz


Enlarge photo 17
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17
UHF Folded Dipole - AWG10
L=9.375, FW=1.0-in
Azimuthal Pattern at 590 MHz


Enlarge photo 18
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18
UHF Folded Dipole - AWG10
L=9.375, FW=1.0-in
Azimuthal Pattern at 698 MHz


Enlarge photo 19
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UHF Tri-Folded Dipole - QICT
3D View - Bottom Fed

"Given that a barnyard number for the..."
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Enlarge photo 20
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20
UHF Tri-Folded Dipole - QICT
Front View
[1 small box = 0.25 inches]


Enlarge Microsoft Word Document 21
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DOC21
UHF Tri-Folded Dipole - QICT
4nec2 File


Enlarge photo 22
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22
UHF Tri-Folded Dipole - QICT
UHF Raw Gain


Enlarge photo 23
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23
UHF Tri-Folded Dipole - QICT
UHF SWR (300-ohms) Under 4.0


Enlarge photo 24
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24
UHF Tri-Folded Dipole - QICT
UHF Impedance

Clearly it's 600-ohm Char. Impedance


Enlarge photo 25
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UHF Tri-Folded Dipole - QICT
Azimuthal Pattern at 470 MHz


Enlarge photo 26
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UHF Tri-Folded Dipole - QICT
Azimuthal Pattern at 590 MHz


Enlarge photo 27
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UHF Tri-Folded Dipole - QICT
Azimuthal Pattern at 698 MHz


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