UHF H2 (11x12) 2-Bay Bowtie

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UHF H2 (11x12) 2-Bay Bowtie - NO Refl

UHF H2 (11x12) 2-Bay Bowtie with No Reflector, OPTIMIZED for New UHF Band using nikiml's
Python Optimization Scripts. Charts show significant improvement of H2 vs either M2 version.
Overall Dimensions: 20.0-in H x 21.75-in W

UHF Raw Gain = 7.3 to 10.3 dBi with SWR (300-ohms) under 3.0 (Good).
Hi-VHF Raw Gain = 2.4 to 2.8 dBi with SWR (300-ohms) = 12.4 to 6.7 is Excessive.

OPTIMIZED DIMENSIONS:
BowLen = 11.0 = Bowtie Whisker Half-Length,
ZBowII = 12.0 = Distance between the Centers of the two Bowties,
TineSep = 8.0 = Bowtie Tine Separation,
FedSep = 1.25 = Separation (in inches) between two FEEDLINE wires.

Date(s): 8 Feb 2015. Album by holl_ands. 1 - 20 of 20 Total. 5471 Visits.

enlarge 75KB, 860x1024 1 UHF H2 2-Bay Bowtie - No Refl. 3D View	enlarge 247KB, 1024x870 2 UHF H2 2-Bay Bowtie - No Refl. Front View WhiskerLength = 11-in, Bow Separation = 12-in, Tine Separation = 8-in, Feedline Sep. = 1.25-in [1 large square = 2.5 inches]	enlarge 30KB, 791x1024 3 UHF H2 2-Bay Bowtie - No Refl. 4nec2 File Contains Dimensions
enlarge 159KB, 1024x741 4 UHF H2 2-Bay Bowtie - No Refl. UHF Raw Gain = 7.3 to 10.3 dBi	enlarge 178KB, 1024x741 5 UHF H2 2-Bay Bowtie - No Refl. UHF SWR (300-ohms) = 3.0	enlarge 231KB, 1024x741 6 UHF H2 2-Bay Bowtie - No Refl. UHF Impedance
enlarge 311KB, 1024x1024 7 UHF H2 2-Bay Bowtie - No Refl. Azimuthal Pattern at 470 MHz	enlarge 311KB, 1024x1024 8 UHF H2 2-Bay Bowtie - No Refl. Azimuthal Pattern at 530 MHz	enlarge 310KB, 1024x1024 9 UHF H2 2-Bay Bowtie - No Refl. Azimuthal Pattern at 590 MHz
enlarge 307KB, 1024x1024 10 UHF H2 2-Bay Bowtie - No Refl. Azimuthal Pattern at 650 MHz	enlarge 309KB, 1024x1024 11 UHF H2 2-Bay Bowtie - No Refl. Azimuthal Pattern at 698 MHz	enlarge 311KB, 1024x1024 12 UHF H2 2-Bay Bowtie - No Refl. Azimuthal Pattern at 806 MHz
enlarge 167KB, 1024x741 13 UHF H2 2-Bay Bowtie - No Refl. Hi-VHF Raw Gain = 2.4 to 2.8 dBi	enlarge 187KB, 1024x741 14 UHF H2 2-Bay Bowtie - No Refl. Hi-VHF SWR (300-ohms) = 12.4 to 6.7 is Excessive	enlarge 218KB, 1024x741 15 UHF H2 2-Bay Bowtie - No Refl. Hi-VHF Impedance
enlarge 317KB, 1024x1024 16 UHF H2 2-Bay Bowtie - No Refl. Azimuthal Pattern at 174 MHz	enlarge 317KB, 1024x1024 17 UHF H2 2-Bay Bowtie - No Refl. Azimuthal Pattern at 198 MHz	enlarge 321KB, 1024x1024 18 UHF H2 2-Bay Bowtie - No Refl. Azimuthal Pattern at 216 MHz
enlarge 236KB, 1024x696 19 M2 vs H2 vs RLH2 Comparison - No Refl Raw Gain H2 is Significant Improvement vs mclapp M2 RLH2's Hi-VHF Resonator Loop provides acceptable Hi-VHF SWR at expense of lower Gain on Upper Channels	enlarge 244KB, 1024x696 20 UHF H2 2-Bay Bowtie - No Refl Significant Improvement vs mclapp M2 (Inner Part of M4)

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