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 holl_ands | Home > Bowties, Dipoles, Batwings & Rhombics > 
UHF Double Rhomboid
UHF Double Rhomboid (18.4 ft long by 8.2 ft wide, AWG12) analyzed using 4nec2.
Although the differences were small, "best" value for Termination Resistors was 300-ohms.
Date(s): 10 Mar 2010. Album by holl_ands. 1 - 16 of 16 Total. 11650 Visits.
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Enlarge photo 1
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Double Rhomboid w 300-ohm Terminations
3D View


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Double Rhomboid w 300-ohm Terminations
Front View (along the X-axis)
Total Width = 98.7 inches (8.2 ft).

[One small box = 2.5 inches]


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3
Double Rhomboid w 300-ohm Terminations
Top View
Total Length = 221 inches (18.4 ft).

[One small box = 5 inches]


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Double Rhomboid w 300-ohm Terminations
UHF Raw Gain, F/B and F/R Ratios

300-ohm Terminators provide best F/B Ratio


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Double Rhomboid w 300-ohm Terminations
UHF SWR (300-ohm)

300-ohm Terminators provide best F/B Ratio


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Double Rhomboid w 600-ohm Terminations
UHF Raw Gain, F/B and F/R Ratios


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Double Rhomboid w 600-ohm Terminations
UHF SWR (300-ohm)


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Double Rhomboid w 900-ohm Terminations
UHF Raw Gain, F/B and F/R Ratios


Enlarge photo 9
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Double Rhomboid w 900-ohm Terminations
UHF SWR (300-ohm)


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Double Rhomboid w 150-ohm Terminations
UHF Raw Gain, F/B and F/R Ratios


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Double Rhomboid w 150-ohm Terminations
UHF SWR (300-ohm)


Enlarge photo 12
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12
Double Rhomboid without ANY Terminations
UHF Raw Gain, F/B and F/R Ratios


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Double Rhomboid
Azimuthal Pattern at 470 MHz


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Double Rhomboid
Azimuthal Pattern at 590 MHz


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Double Rhomboid
Azimuthal Pattern at 698 MHz


Enlarge Microsoft Word Document 16
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DOC16
Double Rhomboid w 300-ohm Terminations
4nec2 File


 
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