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H+U 2-Bay+Loop RLH2 (10.5x8.7) - NO Refl
H+U 2-Bay Bowtie RLH2 (10.5x8.75) + Rectangular Hi-VHF Resonator Loop (No Reflector) analyzed using
4nec2 after ALL RLH2 (10.5x8.75) Dimensions determined using nikiml's Python Optimization Scripts,
allowing Whiskers to Extend beyond Loop.  Forward Bow Sweep assumed to be 0.5-in for the purposes
of this model to prevent collisions with the Loop.

In practice, a thinner piece of plastic or wood could be used, esp. if using Copper or Aluminized Foil Tape.
Dimensions can be used with either modeled AWG10, or AWG12 or even 1/4-in Foil Tape.

Hi-VHF Resonator Loop greatly improved Hi-VHF SWR and hence Net Gain, with only 1 dB UHF Gain Loss:

UHF Raw Gain = 6.4 to 9.5 to 9.2 to 9.5 dBi and SWR (300-ohms) Under 3.6 [GOOD].
Hi-VHF Raw Gain = 3.4 to 3.6 dBi and SWR (300-ohms) Under 3.4 [GOOD].

OPTIMIZED DIMENSIONS (ALL AWG10...or AWG12 Wire Size):
BowLength = 10.5-in = Whisker Length
BowSpacing = 8.75-in = Bowtie-to-Bowtie Separation (at Center)
TineSep = 6.5-in = Tip-to-Tip Tine Separation
BowSwp = 0.5-in = Forward Bow Sweep
FeedSep = 1.25 = Feedline Separation
Rectangular Loop = 24.5-in H x 18.75-in W
Date(s): 12Feb 2015. Album by holl_ands. 1 - 21 of 21 Total. 3081 Visits.
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H+U 2-Bay + Rect. Loop (RLH2) - NO Refl
3D View


Enlarge photo 2
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H+U 2-Bay + Rect. Loop (RLH2) - NO Refl
Front View
[1 large square = 2.5 inches]


Enlarge photo 3
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H+U 2-Bay + Rect. Loop (RLH2) - NO Refl
Top View
Bows Swept Forward 0.5-in so don't Touch
[1 large square = 2.5 inches]


Enlarge photo 4
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H+U 2-Bay + Rect. Loop (RLH2) - NO Refl
UHF Raw Gain = 6.4 to 9.5 to 9.2 to 9.5 dBi


Enlarge photo 5
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H+U 2-Bay + Rect. Loop (RLH2) - NO Refl
UHF SWR (300-ohms) Under 3.6


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H+U 2-Bay + Rect. Loop (RLH2) - NO Refl
UHF Impedance


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H+U 2-Bay + Rect. Loop (RLH2) - NO Refl
Azimuthal Pattern at 470 MHz


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H+U 2-Bay + Rect. Loop (RLH2) - NO Refl
Azimuthal Pattern at 530 MHz


Enlarge photo 9
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H+U 2-Bay + Rect. Loop (RLH2) - NO Refl
Azimuthal Pattern at 590 MHz


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H+U 2-Bay + Rect. Loop (RLH2) - NO Refl
Azimuthal Pattern at 650 MHz


Enlarge photo 11
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H+U 2-Bay + Rect. Loop (RLH2) - NO Refl
Azimuthal Pattern at 698 MHz


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H+U 2-Bay + Rect. Loop (RLH2) - NO Refl
Azimuthal Pattern at 758 MHz


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H+U 2-Bay + Rect. Loop (RLH2) - NO Refl
Azimuthal Pattern at 806 MHz


Enlarge Microsoft Word Document 14
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DOC14
H+U 2-Bay + Rect. Loop (RLH2) - NO Refl
4nec2 File Contains Dimensions


Enlarge photo 15
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H+U 2-Bay + Rect. Loop (RLH2) - NO Refl
Side View
Bows Swept Forward 0.5-in so don't Touch
[1 large square = 2.5 inches]


Enlarge photo 16
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H+U 2-Bay + Rect. Loop (RLH2) - NO Refl
Hi-VHF Raw Gain = 3.4 to 3.6 dBi


Enlarge photo 17
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H+U 2-Bay + Rect. Loop (RLH2) - NO Refl
Hi-VHF SWR (300-ohms) Under 3.4


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H+U 2-Bay + Rect. Loop (RLH2) - NO Refl
Hi-VHF Impedance


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H+U 2-Bay + Rect. Loop (RLH2) - NO Refl
Azimuthal Pattern at 174 MHz


Enlarge photo 20
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H+U 2-Bay + Rect. Loop (RLH2) - NO Refl
Azimuthal Pattern at 198 MHz


Enlarge photo 21
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H+U 2-Bay + Rect. Loop (RLH2) - NO Refl
Azimuthal Pattern at 216 MHz


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