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holl_ands | Home > Loop Antennas incl Folded Dipole > Browse:Compare LoopsWi-Fi Folded Dipole - 2400-2500 MHzUHF Folded & Tri-Folded DipolesHi-VHF+UHF "VEE" Folded DipoleUHF Circular & Square Loops NO ReflectorUHF "Figure-8" Twin Loops - NO ReflUHF "Figure-8" Twin-Loops + xxRR - OPTHi-VHF Figure-8 Twin Loops - NO ReflUHF Twin-Hoop Chireix - NO or 26ReflRodsHi-VHF+UHF Tapered Loop - A-D C2 & C2-VHi-VHF+UHF Tapered DoubleLoop - d510d180UHF Shorted Bowtie Loop (SBL)Hi-VHF+UHF Bowtie-In-Loop - NO ReflectorHi-VHF+UHF Bowtie-In-Loop + 11RR - OPTHi-VHF+UHF Bowtie-In-Loop (DblAngRefl)HiVHF+UHF DreamcatcherU+H 2-Bay Hentenna NO+11ReflRodsUHF Hourglass LoopUHF Quad-Trapezoid-LoopUHF Quad-Trapezoid-Loop+2xBarsUHF Quadazoid Loop - No ReflUHF Quadazoid Loop + ReflectorHi-VHF Folded DipolesHi-VHF Circular Loop + ReflectorHi-VHF Square Loop + ReflectorHiVHF Shorted Bowtie Loop (NO Reflector)Hi-VHF Shorted Bowtie Loop (w Reflector)Hi-VHF Hourglass LoopHi-VHF Quad-Trapezoid-LoopHi-VHF Quad-Trapezoid-Loop+2Bars - OPTLo-VHF Tri-Folded Dipoles - OPTLo-VHF 2-Bay Folded Dipole - OPTVHF Square & Circular LoopsLo-VHF Folded DipolesLoVHF Hourglass-Loop - No ReflectorLoVHF+FM Hourglass LoopLoVHF Hourglass-Loop + 3 ReflRodsLoVHF Hourglass-Loop + 5 ReflRodsHi-VHF (+UHF) Twin Rectangular LoopsHiVHF+UHF RL-M2 2-Bay+Loop - NO Refl.H+U 2-Bay+Loop RLH2 (12x10) - NO ReflH+U 2-Bay+Loop RLH2 (10.5x8.7) - NO ReflH+U 4-Bay Loop RLH4 - No ReflHiVHF+UHF 2Square-Chireix-In-Rect. LoopHi-VHF+UHF In 3-ftx2-ft Picture Frame/
Hi-VHF+UHF "VEE" Folded Dipole Hi-VHF+UHF "VEE" Folded Dipole analyzed using 4nec2.  Optimized dimensions determined using nikiml's Python Scripts. Note that Forward Sweep enhances performance in the UHF Band (third harmonic of Hi-VHF), although SWR is a bit high for lowest and highest channels. UHF Raw Gain = 5.1 to 6.7 to 4.8 dBi, F/B = 8.1 to 2.2 dB and SWR (300-ohms) under 4.8. Hi-VHF Raw Gain = 1.9 dBi and F/B & F/R = 0.2 to 0.4 and SWR (300-ohms) under 2.2. Ch2-FM Raw Gain = 0.7 to 1.6 dBi and SWR (300-ohms) 1400-52 is Excessive. Date(s): 25 Sept 2014. Album by holl_ands. 1 - 27 of 27 Total. 10223 Visits.
enlarge 43KB, 1024x751 1 Hi-VHF+UHF "VEE" Folded Dipole 3D View enlarge 90KB, 1152x304 2 Hi-VHF+UHF "VEE" Folded Dipole Front View Separation between Long Elements = 2-in [1 large square = 2.5 inches] enlarge 142KB, 527x1024 3 Hi-VHF+UHF "VEE" Folded Dipole Top View Forward Sweep = 7.08-in Total Width = 25.0-in Total Length = 29.0-in = 2 x 13.75" + 1.5" Center [1 large square = 2.5 inches] enlarge 173KB, 1024x690 4 Hi-VHF+UHF "VEE" Folded Dipole UHF Raw Gain = 5.1 to 6.7 to 4.8 dBi UHF F/B = 8.1 to 2.2 enlarge 175KB, 1024x690 5 Hi-VHF+UHF "VEE" Folded Dipole UHF SWR (300-ohms) under 4.8 enlarge 231KB, 1024x690 6 Hi-VHF+UHF "VEE" Folded Dipole UHF Impedance enlarge 301KB, 1024x1024 7 Hi-VHF+UHF "VEE" Folded Dipole Azimuthal Pattern at 474 MHz enlarge 303KB, 1024x1024 8 Hi-VHF+UHF "VEE" Folded Dipole Azimuthal Pattern at 528 MHz enlarge 301KB, 1024x1024 9 Hi-VHF+UHF "VEE" Folded Dipole Azimuthal Pattern at 582 MHz enlarge 299KB, 1024x1024 10 Hi-VHF+UHF "VEE" Folded Dipole Azimuthal Pattern at 636 MHz enlarge 303KB, 1024x1024 11 Hi-VHF+UHF "VEE" Folded Dipole Azimuthal Pattern at 696 MHz enlarge 318KB, 1024x1024 12 Hi-VHF+UHF "VEE" Folded Dipole Azimuthal Pattern at 756 MHz enlarge 335KB, 1024x1024 13 Hi-VHF+UHF "VEE" Folded Dipole Azimuthal Pattern at 804 MHz enlarge 28KB, 791x1024 14 Hi-VHF+UHF "VEE" Folded Dipole 4nec2 File enlarge 122KB, 1152x619 15 Hi-VHF+UHF "VEE" Folded Dipole Side View Separation between Long Elements = 2-in [1 large square = 2.5 inches] enlarge 158KB, 1024x690 16 Hi-VHF+UHF "VEE" Folded Dipole Hi-VHF Raw Gain = 1.9 dBi Hi-VHF F/B & F/R = 0.2 to 0.4 enlarge 179KB, 1024x690 17 Hi-VHF+UHF "VEE" Folded Dipole Hi-VHF SWR (300-ohms) under 2.2 enlarge 218KB, 1024x690 18 Hi-VHF+UHF "VEE" Folded Dipole Hi-VHF Impedance enlarge 297KB, 1024x1024 19 Hi-VHF+UHF "VEE" Folded Dipole Azimuthal Pattern at 174 MHz enlarge 299KB, 1024x1024 20 Hi-VHF+UHF "VEE" Folded Dipole Azimuthal Pattern at 198 MHz enlarge 299KB, 1024x1024 21 Hi-VHF+UHF "VEE" Folded Dipole Azimuthal Pattern at 216 MHz enlarge 169KB, 1024x690 22 Hi-VHF+UHF "VEE" Folded Dipole Ch2-FM Raw Gain = 0.7 to 1.6 dBi enlarge 195KB, 1024x690 23 Hi-VHF+UHF "VEE" Folded Dipole Ch2-FM SWR (300-ohms) = 1400 to 52 enlarge 235KB, 1024x690 24 Hi-VHF+UHF "VEE" Folded Dipole Ch2-FM Impedance enlarge 308KB, 1024x1024 25 Hi-VHF+UHF "VEE" Folded Dipole Azimuthal Pattern at 54 MHz enlarge 304KB, 1024x1024 26 Hi-VHF+UHF "VEE" Folded Dipole Azimuthal Pattern at 84 MHz enlarge 305KB, 1024x1024 27 Hi-VHF+UHF "VEE" Folded Dipole Azimuthal Pattern at 108 MHz
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