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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/
LoVHF Hourglass-Loop - No Reflector Ch3-6 Optimized Hourglass-Loop Antenna (with NO Reflectors) analyzed using 4nec2, with somewhat higher SWR on Ch2 and FM Band. NO REFLECTOR RODS: Ch3-6 Raw Gain = 3.8 to 5.4 dBi and SWR Under 2.7. Wire Size is NOT critical for Hourglass-Loop.  Charts presume AWG8, but there is very little change between using AWG12 or 1/2-in Copper Tube. A CONSTRAINT was imposed to limit the HEIGHT of the Antennas to 84-inches (7-feet) MAX. Date(s): 15 Oct 2013. Album by holl_ands. 1 - 8 of 8 Total. 12414 Visits.
enlarge 62KB, 758x1024 1 Ch3-6 Hourglass-Loop - No Reflector 3D View enlarge 210KB, 890x1024 2 Ch3-6 Hourglass-Loop - No Reflector Front View [1 large square = 12.5 inches] enlarge 317KB, 1024x1024 3 Ch3-6 Hourglass-Loop - No Reflector Azimuthal Pattern at 85 MHz (Ch6) enlarge 158KB, 1024x650 4 Ch3-6 Hourglass-Loop - No Reflector Ch3-6 Raw Gain = 3.8 to 5.4 dBi and up to 6.0 dBi in FM Band enlarge 198KB, 1024x650 5 Ch3-6 Hourglass-Loop - No Reflector SWR (300-ohms) Under 1.9 on Ch6 and Under 2.7 on Ch3-6. enlarge 226KB, 1024x650 6 Ch3-6 Hourglass-Loop - No Reflector Ch2-6 + FM Impedance enlarge 29KB, 791x1024 7 Ch3-6 Hourglass-Loop - No Reflector 4nec2 File enlarge 22KB, 791x1024 8 Ch3-6 Hourglass-Loop - No Reflector Contents of Python Control *.bat Script
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