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holl_ands | Home > Omni & Quasi-Omni Directional Antennas > Browse:FM Flat-Swept SBGH H-POL OMNI-PLUSFM TRIAD 4xRectangular-Loops H-OMNI-PLUSFM Goalkeeper Quad-Trap+Spurs Quasi-OMNIFM TRIAD Array of Dipoles H-OMNIFM Double-Hoop H-POL OMNIFM Double-Hoop + Vertical-Dipole OutsideFM Double-Hoop + Vertical-FD-OutsideFM Double-Hoop + Vert. Dipole In CenterFM Double-Hoop + Vertical-FD-In-CenterFM Double-Hoop + Vertical Whip OutsideFM Vertical Folded Dipole VPOL TRUE-OMNIFM Vertical Stick Dipole V-POL TRUE-OMNIFM + VHF Discone V-POL TRUE-OMNIFM Monopole Whip over Groundplane OMNIFM Turnstile QuasiOMNI Antennacraft FMSSFM Turnstile Quasi-Omni - AlternateFM Turnstile - A-C FMSS RotatedFM ESS Curves - Fracarro & DipolFM ZigZag - Triax FM ZigmaFM Right Circular Folded Dipole PairFM Cycloid Dipole - Circular Polarized490 MHz Flat-Swept SBGH H-POL OMNI-PLUS490 MHz Flat-Swept SBGH OMNI + TOP-HAT490 MHz 3-Dipole TRIAD Array H-POL OMNI490 MHz Crossed-Dipoles + One TL - OMNI490 MHz Crossed-Dipoles, 2 Unequal TLs490 MHz 7-El Yagi TRIAD H-POL OMNI-PLUS490 MHz 4El Yagi Triad H-POL True-OMNI490 MHz Collinear Helical HPOL OMNI-PLUS490 MHz Double Diamond H-POL Quasi-OMNIUHF Vertical Folded Dipole V-POL OMNIUHF SBGH H-POL OMNI-PLUS by nikimlUHF Hoverman Type 1 H-POL Quasi-OmniUHF M4 (10x9.5) Twisted 4-Bay Quasi-OMNIUHF 2xM4 Twisted 8-Bay - Quasi-OMNIHi-VHF Goalkeeper Quad-Trapezoid+SpursHi-VHF Monopole Whip V-POL TRUE-OMNIHi-VHF Vertical Folded Dipole OMNICh2-69 Crossed Loops 90-deg Phase ShiftCh2-69 + FM Crossed Loops - UVOX-22m "Classic" 3QWL+QWL J-Pole
UHF 2xM4 Twisted 8-Bay - Quasi-OMNI UHF Vertically-Stacked and Twisted 2xM4 (9.5x9) 4-Bays providing Quasi-Omnidirectional Antenna Pattern analyzed using 4nec2. Date(s): 7 Jan 2014. Album by holl_ands. 1 - 15 of 15 Total. 5798 Visits.
enlarge 73KB, 481x1024 1 2xM4 (9.5x9) Twisted 8-Bay 3D View enlarge 141KB, 397x1024 2 2xM4 (9.5x9) Twisted 8-Bay Front View [1 large square = 5 inches] enlarge 236KB, 1014x1024 3 2xM4 (9.5x9) Twisted 8-Bay Top View [1 large square = 2.5 inches] enlarge 156KB, 1024x650 4 2xM4 (9.5x9) Twisted 8-Bay UHF Raw Gain = 5.7 to 9.2 dBi at 90-deg Forward/Reverse are BEST Gain Directions enlarge 182KB, 1024x650 5 2xM4 (9.5x9) Twisted 8-Bay UHF SWR (300-ohms) Under 2.4 enlarge 233KB, 1024x650 6 2xM4 (9.5x9) Twisted 8-Bay UHF Impedance enlarge 151KB, 1024x650 7 2xM4 (9.5x9) Twisted 8-Bay UHF Raw Gain = 5.2 to 0.5 dBi at 45-deg Diagonals are WORST Gain Directions enlarge 177KB, 1024x650 8 2xM4 (9.5x9) Twisted 8-Bay UHF Raw Gain = 6.0 to 8.0 dBi at 80-deg Shows F/B & F/R Ratios at this angle enlarge 42KB, 791x1024 9 2xM4 (9.5x9) Twisted 8-Bay 4nec2 File enlarge 335KB, 1024x1024 10 2xM4 (9.5x9) Twisted 8-Bay Azimuthal Pattern at 470 MHz enlarge 328KB, 1024x1024 11 2xM4 (9.5x9) Twisted 8-Bay Azimuthal Pattern at 530 MHz enlarge 329KB, 1024x1024 12 2xM4 (9.5x9) Twisted 8-Bay Azimuthal Pattern at 590 MHz enlarge 349KB, 1024x1024 13 2xM4 (9.5x9) Twisted 8-Bay Azimuthal Pattern at 650 MHz enlarge 331KB, 1024x1024 14 2xM4 (9.5x9) Twisted 8-Bay Azimuthal Pattern at 698 MHz enlarge 345KB, 1024x1024 15 2xM4 (9.5x9) Twisted 8-Bay Azimuthal Pattern at 806 MHz
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