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holl_ands | Home > Gray-Hoverman Antennas > Browse:UHF SBGH + 2ea 36"x18" Screen Grid Refl.GH - nikiml EVAL SummariesHoverman Type1 (NO Reflector)Hoverman Type 1 Omni-directionalHoverman Type-2 with 4 Split RR Pair'sHoverman Type 2 w 4 RRs - Radio ShackSBGH - NO Reflector by AutofilsAntennacraft G-1483 Hoverman Type 2Antennacraft SuperG-1483 DBGHAntennacraft Double-SuperG-1483Lo+Hi-VHF SBGH w NARODSSBGH Hi-VHF & UHF Combo - X0255/6DBGH Hi-VHF & UHF Combo - 300ohmSBGH Wide Beamwidth/Omni Investigations DBGH Wide Beamwidth/Omni Investigations
Hoverman Type-2 with 4 Split RR Pair's Hoverman Type 2 with 4 Reflector Rod Pairs [each with a Mid-Point Gap] analyzed using 4nec2. Hoverman Type 1 (NO Reflector) per US Patent 2,918,672, issued 22Dec1959, analyzed using 4nec2, assuming AWG12: http://www.freepatentsonline.com/2918672.pdf All 45-deg Zig-Zag and Horizontal Element Lengths L=7.0-in. If built per Patent, Type-2 would not cover up through Ch52. Shortening Horizontal ELements from 7-inches to 5.0 to 6.25-inches will. Date(s): 29 May 2017. Album by holl_ands. 1 - 18 of 18 Total. 158 Visits.
enlarge 73KB, 644x1024 1 Hoverman Type-2 with 4 Split RR Pair's 3D View enlarge 316KB, 863x1024 2 Hoverman Type-2 with 4 Split RR Pair's Front View [1 large square = 2.5-inches] enlarge 118KB, 354x1024 3 Hoverman Type-2 with 4 Split RR Pair's Top View [1 large square = 2.5-inches] enlarge 214KB, 1152x711 4 Hoverman Type-2 with 4 Split RR Pair's UHF Raw Gain = 9.8 to 13.8 to 7.1 dBi enlarge 234KB, 1152x711 5 Hoverman Type-2 with 4 Split RR Pair's UHF SWR (300-ohms) = 3.8-1.7-2.5 is TOO HIGH enlarge 287KB, 1152x711 6 Hoverman Type-2 with 4 Split RR Pair's UHF Impedance enlarge 326KB, 1024x1024 7 Hoverman Type-2 with 4 Split RR Pair's Azimuthal Pattern at 470 MHz Low Front/Back Ratio enlarge 326KB, 1024x1024 8 Hoverman Type-2 with 4 Split RR Pair's Azimuthal Pattern at 530 MHz Low Front/Back Ratio enlarge 326KB, 1024x1024 9 Hoverman Type-2 with 4 Split RR Pair's Azimuthal Pattern at 590 MHz Low Front/Back Ratio enlarge 325KB, 1024x1024 10 Hoverman Type-2 with 4 Split RR Pair's Azimuthal Pattern at 650 MHz Low Front/Back Ratio enlarge 330KB, 1024x1024 11 Hoverman Type-2 with 4 Split RR Pair's Azimuthal Pattern at 698 MHz Low Front/REAR Ratio enlarge 334KB, 1024x1024 12 Hoverman Type-2 with 4 Split RR Pair's Azimuthal Pattern at 806 MHz Low Front/Back Ratio enlarge 183KB, 1152x711 13 Hoverman Type-2 with 4 Split RR Pair's UHF Raw Gain = 3.7 to 5.8 dBi UHF F/B & F/R Ratio = 0.3-0.6 dB Forward enlarge 231KB, 1152x711 14 Hoverman Type-2 with 4 Split RR Pair's Hi-VHF SWR (300-ohms) is EXCESSIVE enlarge 277KB, 1152x711 15 Hoverman Type-2 with 4 Split RR Pair's Hi-VHF Impedance enlarge 107KB, 316x1024 16 Hoverman Type-2 with 4 Split RR Pair's Side View [1 large square = 2.5-inches] enlarge 28KB, 791x1024 17 Hoverman Type-2 with 4 Split RR Pair's 4nec2 File enlarge 50KB, 791x1024 18 EVAL's *.html Performance Summary File, incl. Dimensioned Drawing [Choose HTML, PDF is corrupted]
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