FM TRIAD Array of Dipoles, Horizontal-OMNI analyzed using 4nec2, based on design by L. B. Cebik, W4RNL, with 4nec2 File prepared by Carol F. Milazzo, KP4MD, see http://www.qsl.net/kp4md/omnihoriz.htm
FM Raw Gain = 0.3 to 1.6 dBi [across all Angles & Freqs] and SWR (300-ohms) is Under 2.6, which is roughly 1.9 to 0.6 dB LOWER than a 0 dbd = 2.2 dBi Omni.
Note that 75:300-Ohm Balun Wires form the Simulated Vertical Source Wire, which is CRITICAL to Performance and needs to be 6-in Long. Three Feedlines run from there to each Dipole's mid-point Gap = 0.5-in, whose dimension is also CRITICAL for Performance.
4Oct201816 items1394 visitsAlbum by holl_ands
enlarge 53KB, 1152x712 1 FM TRIAD of Dipoles H-OMNI 3D View
enlarge 113KB, 1152x423 2 FM TRIAD of Dipoles H-OMNI Front View [1 large square = 12.5-inches]
enlarge 246KB, 1024x1014 3 FM TRIAD of Dipoles H-OMNI Top View [1 large square = 12.5-inches]
enlarge 199KB, 1152x664 4 FM TRIAD of Dipoles H-OMNI FM Raw Gain = 1.6 to 1.2 dBi
enlarge 202KB, 1152x664 5 FM TRIAD of Dipoles H-OMNI FM SWR (300-ohms) Under 2.6
enlarge 230KB, 1152x664 6 FM TRIAD of Dipoles H-OMNI FM Impedance
enlarge 306KB, 1024x1024 7 FM TRIAD of Dipoles H-OMNI Azimuthal Gain on 88 MHz = 1.0 to 1.6 dBi
enlarge 303KB, 1024x1024 8 FM TRIAD of Dipoles H-OMNI Azimuthal Gain on 98 MHz = 0.7 to 1.5 dBi
enlarge 303KB, 1024x1024 9 FM TRIAD of Dipoles H-OMNI Azimuthal Gain on 108 MHz = 0.3 to 1.2 dBi
enlarge 315KB, 1024x1024 10 FM TRIAD of Dipoles H-OMNI Elevation Gain at 88 MHz
enlarge 310KB, 1024x1024 11 FM TRIAD of Dipoles H-OMNI Elevation Gain at 98 MHz
enlarge 314KB, 1024x1024 12 FM TRIAD of Dipoles H-OMNI Elevation Gain at 108 MHz
enlarge 30KB, 791x1024 13 FM TRIAD of Dipoles H-OMNI 4nec2 Text File includes Dimensions
enlarge 28KB, 791x1024 14 FM TRIAD of Dipoles H-OMNI nikiml's EVAL Performance Summary *.txt File
enlarge 28KB, 791x1024 15 FM TRIAD of Dipoles H-OMNI nikiml's EVAL Performance Summary *.html
enlarge 115KB, 1152x457 16 FM TRIAD of Dipoles H-OMNI Side View [1 large square = 12.5-inches]
