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holl_ands | Home > Multi-Bay Bowtie Antennas > Browse:UHF Multi-Bay Comparison ChartsUHF 2-Bay Bowties - NO Reflectors/UHF 2-Bay Bowties with Reflector/UHF 2-Bay SOLID Triangles - Var RR'sUHF 3-Bay Bowties - NO Reflectors/UHF 4-Bay Bowties - NO Reflectors/UHF 4-Bay Bowties with Reflector/UHF H4 2x2-Bay Bowties/HiVHF+UHF HUM4 (9.5x9) + 2Sizes ReflRodsNEW UHF FF6 No Refl - OPTNEW UHF Free-Form 6-Bay (NU-FF6) + VDARUHF FF6 Vertical 6-Bay Bowtie - NO ReflUHF Vertical 6-Bay Bowtie (FF6) + VDARUHF 8-Bay Bowties - If NO Reflectors/UHF 8-Bay Bowtie with Reflector/Hi-VHF 2-Bay Bowtie - NO ReflectorHiVHF 2-Bay - Various Reflector RodsHi-VHF 2-Bay Bowtie - FLAT Grid Refl.Hi-VHF FF4 4-Bay Bowtie - NO ReflectorHi-VHF 4-Bay Bowtie - NO ReflectorHi-VHF 4-Bay Bowtie with Reflector
NEW UHF Free-Form 6-Bay (NU-FF6) + VDAR NEW-UHF [470-608 MHz] Free-Form 6-Bay (NU-FF6) Bowtie Antennas with 60"Hx36"W VDAR (Variable Double Angle Reflector, 2x2" Grid) analyzed using 4nec2.  Dimensions were Optimized using nikiml's Python Scripts. NEW UHF Band Raw Gain = 15.2 to 17.8 dBi, F/R & F/R Ratio Min. = 21.0 dB and SWR (300-ohms) Under 2.1. Hi-VHF Raw Gain = 13.7 to 8.9 dBi, F/B & F/R Ratio Min = 13.9 dB and SWR (300-ohms) = 5 to 21 is Excessive. Compared to OLD UHF Band FF6, we see 1.8 dB Gain increase on 608 MHz, but 0.2 dB Loss on 470 MHz with significant increase in Hi-VHF Band Gain: UHF = 15.0 to 16.4 to 16.0 to 17.0 dBi, F/B & F/R Ratio Min = 15.2 dB and SWR (300-ohms) Under 1.7. Hi-VHF Raw Gain = 9.1 to 8.0 dBi, F/B & F/R Ratio Min = 14.1 dB and SWR (300-ohms) = 17 to 13 is Excessive: https://imageevent.com/holl_ands/multibay/uhf6baybowtievdar EDIT (7May2019): Added comparison to Old UHF Band FF6. Date(s): 26 Aug 2017. Album by holl_ands. 1 - 20 of 20 Total. 5421 Visits.
enlarge 265KB, 565x1024 1 NEW-UHF FF6 + VDAR (60x36-in) 3D View enlarge 383KB, 695x1024 2 NEW-UHF FF6 + VDAR (60x36-in) Front View [1 large square = 5-inches] enlarge 155KB, 370x1024 3 NEW-UHF FF6 + VDAR (60x36-in) Top View [1 large square = 2.5-inches] enlarge 166KB, 1024x665 4 NEW-UHF FF6 + VDAR (60x36-in) NEW UHF Raw Gain = 15.2 to 17.8 dBi F/R & F/R Ratio Min. = 21.0 dB enlarge 181KB, 1024x665 5 NEW-UHF FF6 + VDAR (60x36-in) NEW UHF SWR (300-ohms) Under 2.1 enlarge 252KB, 1024x661 6 NEW-UHF FF6 + VDAR (60x36-in) UHF Impedance enlarge 282KB, 1024x1024 7 NEW-UHF FF6 + VDAR (60x36-in) Azimuthal Pattern at 470 MHz enlarge 287KB, 1024x1024 8 NEW-UHF FF6 + VDAR (60x36-in) Azimuthal Pattern at 530 MHz enlarge 295KB, 1024x1024 9 NEW-UHF FF6 + VDAR (60x36-in) Azimuthal Pattern at 608 MHz enlarge 291KB, 1024x1024 10 NEW-UHF FF6 + VDAR (60x36-in) Azimuthal Pattern at 650 MHz enlarge 284KB, 1024x1024 11 NEW-UHF FF6 + VDAR (60x36-in) Azimuthal Pattern at 698 MHz enlarge 124KB, 282x1024 12 NEW-UHF FF6 + VDAR (60x36-in) Side View [1 large square = 5-inches] enlarge 280KB, 1024x1024 13 NEW-UHF FF6 + VDAR (60x36-in) Elevation Pattern at 470 MHz enlarge 281KB, 1024x1024 14 NEW-UHF FF6 + VDAR (60x36-in) Elevation Pattern at 530 MHz enlarge 286KB, 1024x1024 15 NEW-UHF FF6 + VDAR (60x36-in) Elevation Pattern at 608 MHz enlarge 286KB, 1024x1024 16 NEW-UHF FF6 + VDAR (60x36-in) Elevation Pattern at 650 MHz enlarge 281KB, 1024x1024 17 NEW-UHF FF6 + VDAR (60x36-in) Elevation Pattern at 698 MHz enlarge 118KB, 791x1024 18 NEW-UHF FF6 + VDAR (60x36-in) 4nec2 File contains Dimensions enlarge 28KB, 791x1024 19 NEW-UHF FF6 + VDAR (60x36-in) EVAL Summary Text File enlarge 86KB, 791x1024 20 NEW-UHF FF6 + VDAR (60x36-in) EVAL *.html Performance Summary File
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