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. 3315 Visits.
enlarge 75KB, 860x1024 1 UHF H2 2-Bay Bowtie - No Refl. 3D View
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)