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.]
Date(s): 21 Jan 2015. Album by holl_ands. 1 - 18 of 18 Total. 6095 Visits.
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
