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holl_ands>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

FM Vertical Stick Dipole V-POL TRUE-OMNI FM Vertical Stick Dipole TRUE-OMNI with Vertical Polarization analyzed using 4nec2 after adjusting Length for "best fit" of SWR across the FM Band. For HICT (Half-Inch Copper Tubing, actually O.D. = 0.569-in), Optimum Overall Length = 57.4-in. Since Antenna Pattern is a Low-Gain Omni, 75-ohm Coax can be connected DIRECTLY to Center Feedpoint, eliminating any Loss in a 1:1 Balun, with minimal Common Mode Current impact on the Antenna Pattern (as expected in High-Gain Yagi's). Response to RHCP (Right Hand Circular Polarization) is the same as for LHCP (Left Hand Circular Polarization) signals, so there is no suppression of Multipath Reflections.  [Most Reflections reverse Handedness.] 21 Jan 201518 items6415 visitsAlbum by holl_ands

enlarge 19KB, 506x1024 1 FM Vertical Stick Dipole - L = 57.4-in 3D View enlarge 84KB, 288x1024 2 FM Vertical Stick Dipole - L = 57.4-in Front View [1 large square = 5 inches] enlarge 24KB, 791x1024 3 FM Vertical Stick Dipole - L = 57.4-in 4nec2 File enlarge 153KB, 1024x677 4 FM Vertical Stick Dipole - L = 57.4-in FM Band Raw Gain = 2.2 to 2.3 dBi enlarge 193KB, 1024x677 5 FM Vertical Stick Dipole - L = 57.4-in FM Band SWR (75-ohms) Under 2.7 enlarge 218KB, 1024x677 6 FM Vertical Stick Dipole - L = 57.4-in FM Band Impedance enlarge 295KB, 1024x1024 7 FM Vertical Stick Dipole - L = 57.4-in Azimuthal Pattern at 88 MHz is PERFECT Omnidirectonal enlarge 296KB, 1024x1024 8 FM Vertical Stick Dipole - L = 57.4-in Azimuthal Pattern at 98 MHz is PERFECT Omnidirectonal enlarge 303KB, 1024x1024 9 FM Vertical Stick Dipole - L = 57.4-in Azimuthal Pattern at 108 MHz is PERFECT Omnidirectonal enlarge 298KB, 1024x1024 10 FM Vertical Stick Dipole - L = 57.4-in Elevation Pattern at 88 MHz enlarge 298KB, 1024x1024 11 FM Vertical Stick Dipole - L = 57.4-in Elevation Pattern at 98 MHz enlarge 301KB, 1024x1024 12 FM Vertical Stick Dipole - L = 57.4-in Elevation Pattern at 108 MHz enlarge 304KB, 1024x1024 13 FM Vertical Stick Dipole - L = 57.4-in RHCP=LHCP Azimuthal Pattern at 88 MHz is PERFECT Omnidirectonal enlarge 308KB, 1024x1024 14 FM Vertical Stick Dipole - L = 57.4-in RHCP=LHCP Azimuthal Pattern at 98 MHz is PERFECT Omnidirectonal enlarge 316KB, 1024x1024 15 FM Vertical Stick Dipole - L = 57.4-in RHCP=LHCP Azimuthal Pattern at 108 MHz is PERFECT Omnidirectonal enlarge 310KB, 1024x1024 16 FM Vertical Stick Dipole - L = 57.4-in RHCP=LHCP Elevation Pattern at 88 MHz enlarge 311KB, 1024x1024 17 FM Vertical Stick Dipole - L = 57.4-in RHCP=LHCP Elevation Pattern at 98 MHz enlarge 315KB, 1024x1024 18 FM Vertical Stick Dipole - L = 57.4-in RHCP=LHCP Elevation Pattern at 108 MHz

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