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holl_ands | Home > Stacked Antennas > Horizontally Stacked UHF Antennas > Browse:Horiz-Stack 2xFF6 + VDAR + HHHHoriz-Stack 2xFF4 + DAR + HHHHoriz-Stack 2xFF4 + DoubleAng Refl - RFCHoriz-Stack FF4+DAR Angled Against WallHoriz-Stacked CM4221HD's - RF CombinerHoriz-Stck 2xCM4221HD Hacked - NULL BEAMHoriz-Stack UHF Hourglass-Loop - NO ReflHoriz-Stack UHF Hourglass-Loop + 15RR
Horiz-Stack 2xFF6 + VDAR + HHH UHF Horizontally-Stacked 2xFF6's each with Variable Double Angled Reflector (VDAR, 60"Hx36"W) analyzed using 4nec2 after nikiml's Python Optimumization Scripts determined all 19 Variables. Summary of Dimensions is found in the below 4nec2 File. NOTE: 2"Hx2"W Grid Size assumed to fit within constraints of 4nec2.  If 1"Hx2"W Grid Size is used, F/B & F/R Ratios would improve by perhaps 5 dB, as illustrated here: http://imageevent.com/holl_ands/multibay/8bayrefl/oldcm4228wrefl UHF Raw Gain = 17.7 to 19.5 to 18.9 to 19.6 dBi, F/B & F/R Ratio Minimum = 14.9 dB and SWR (300-ohms) Under 2.2.  [Raw Gain = 19.0 dBi +/- 0.6 dB, except 17.7 dBi at 470 MHz.] Hi-VHF Raw Gain = 12.2 to 12.6 to 11.1 dBi, F/B & F/R Ratio Minimum = 13.1 dB and Hi-VHF SWR (300-ohms) = 10.7 to 26.0 to 13.5 is Excessive. Date(s): 29 Sep 2015. Album by holl_ands. 1 - 22 of 22 Total. 2483 Visits.
enlarge 325KB, 1024x967 1 Horiz-Stack 2xFF6 + VDAR + HHH 3D View enlarge 304KB, 1024x859 2 Horiz-Stack 2xFF6 + VDAR + HHH Front View Stack Distance = 51-in [Center-to-Center] [1 large square = 12.5-inches] enlarge 124KB, 534x1024 3 Horiz-Stack 2xFF6 + VDAR + HHH Top View Stack Distance = 51-in [Center-to-Center] [1 large square = 12.5-inches] enlarge 181KB, 1024x722 4 Horiz-Stack 2xFF6 + VDAR + HHH UHF Raw Gain = 17.7 to 19.5 to 18.9 to 19.6 dBi UHF F/B & F/R Ratio Minimum = 14.9 dB enlarge 193KB, 1024x722 5 Horiz-Stack 2xFF6 + VDAR + HHH UHF SWR (300-ohms) Under 2.2 enlarge 234KB, 1024x722 6 Horiz-Stack 2xFF6 + VDAR + HHH UHF Impedance enlarge 305KB, 1024x1024 7 Horiz-Stack 2xFF6 + VDAR + HHH Azimuthal Pattern at 470 MHz enlarge 301KB, 1024x1024 8 Horiz-Stack 2xFF6 + VDAR + HHH Azimuthal Pattern at 530 MHz enlarge 302KB, 1024x1024 9 Horiz-Stack 2xFF6 + VDAR + HHH Azimuthal Pattern at 590 MHz enlarge 303KB, 1024x1024 10 Horiz-Stack 2xFF6 + VDAR + HHH Azimuthal Pattern at 650 MHz enlarge 308KB, 1024x1024 11 Horiz-Stack 2xFF6 + VDAR + HHH Azimuthal Pattern at 698 MHz enlarge 308KB, 1024x1024 12 Horiz-Stack 2xFF6 + VDAR + HHH Azimuthal Pattern at 806 MHz enlarge 180KB, 1024x722 13 Horiz-Stack 2xFF6 + VDAR + HHH Hi-VHF Raw Gain = 12.2 to 12.6 to 11.1 dBi Hi-VHF F/B & F/R Ratio Minimum = 13.1 dB enlarge 191KB, 1024x722 14 Horiz-Stack 2xFF6 + VDAR + HHH Hi-VHF SWR (300-ohms) = 10.7 to 26.0 to 13.5 enlarge 224KB, 1024x722 15 Horiz-Stack 2xFF6 + VDAR + HHH Hi-VHF Impedance enlarge 300KB, 1024x1024 16 Horiz-Stack 2xFF6 + VDAR + HHH Azimuthal Pattern at 174 MHz enlarge 299KB, 1024x1024 17 Horiz-Stack 2xFF6 + VDAR + HHH Azimuthal Pattern at 198 MHz enlarge 300KB, 1024x1024 18 Horiz-Stack 2xFF6 + VDAR + HHH Azimuthal Pattern at 216 MHz enlarge 135KB, 585x1024 19 Horiz-Stack 2xFF6 + VDAR + HHH Side View NOTE: Inner-most Bowties are Swept BACK [1 large square = 12.5-inches] enlarge 204KB, 791x1024 20 Horiz-Stack 2xFF6 + VDAR + HHH 4nec2 File Contains Summary of Dimensions enlarge 26KB, 791x1024 21 Horiz-Stack 2xFF6 + VDAR + HHH EVAL Summary of Performance enlarge 148KB, 791x1024 22 Horiz-Stack 2xFF6 + VDAR + HHH EVAL *.html Summary of Performance
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