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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/
H+U 2-Bay+Loop RLH2 (10.5x8.7) - NO Refl H+U 2-Bay Bowtie RLH2 (10.5x8.75) + Rectangular Hi-VHF Resonator Loop (No Reflector) analyzed using 4nec2 after ALL RLH2 (10.5x8.75) Dimensions determined using nikiml's Python Optimization Scripts, allowing Whiskers to Extend beyond Loop.  Forward Bow Sweep assumed to be 0.5-in for the purposes of this model to prevent collisions with the Loop. In practice, a thinner piece of plastic or wood could be used, esp. if using Copper or Aluminized Foil Tape. Dimensions can be used with either modeled AWG10, or AWG12 or even 1/4-in Foil Tape. Hi-VHF Resonator Loop greatly improved Hi-VHF SWR and hence Net Gain, with only 1 dB UHF Gain Loss: UHF Raw Gain = 6.4 to 9.5 to 9.2 to 9.5 dBi and SWR (300-ohms) Under 3.6 [GOOD]. Hi-VHF Raw Gain = 3.4 to 3.6 dBi and SWR (300-ohms) Under 3.4 [GOOD]. OPTIMIZED DIMENSIONS (ALL AWG10...or AWG12 Wire Size): BowLength = 10.5-in = Whisker Length BowSpacing = 8.75-in = Bowtie-to-Bowtie Separation (at Center) TineSep = 6.5-in = Tip-to-Tip Tine Separation BowSwp = 0.5-in = Forward Bow Sweep FeedSep = 1.25 = Feedline Separation Rectangular Loop = 24.5-in H x 18.75-in W Date(s): 12Feb 2015. Album by holl_ands. 1 - 21 of 21 Total. 4650 Visits.
enlarge 82KB, 817x1024 1 H+U 2-Bay + Rect. Loop (RLH2) - NO Refl 3D View enlarge 291KB, 1004x1024 2 H+U 2-Bay + Rect. Loop (RLH2) - NO Refl Front View [1 large square = 2.5 inches] enlarge 96KB, 340x1024 3 H+U 2-Bay + Rect. Loop (RLH2) - NO Refl Top View Bows Swept Forward 0.5-in so don't Touch [1 large square = 2.5 inches] enlarge 171KB, 1024x741 4 H+U 2-Bay + Rect. Loop (RLH2) - NO Refl UHF Raw Gain = 6.4 to 9.5 to 9.2 to 9.5 dBi enlarge 182KB, 1024x741 5 H+U 2-Bay + Rect. Loop (RLH2) - NO Refl UHF SWR (300-ohms) Under 3.6 enlarge 228KB, 1024x741 6 H+U 2-Bay + Rect. Loop (RLH2) - NO Refl UHF Impedance enlarge 306KB, 1024x1024 7 H+U 2-Bay + Rect. Loop (RLH2) - NO Refl Azimuthal Pattern at 470 MHz enlarge 304KB, 1024x1024 8 H+U 2-Bay + Rect. Loop (RLH2) - NO Refl Azimuthal Pattern at 530 MHz enlarge 307KB, 1024x1024 9 H+U 2-Bay + Rect. Loop (RLH2) - NO Refl Azimuthal Pattern at 590 MHz enlarge 307KB, 1024x1024 10 H+U 2-Bay + Rect. Loop (RLH2) - NO Refl Azimuthal Pattern at 650 MHz enlarge 313KB, 1024x1024 11 H+U 2-Bay + Rect. Loop (RLH2) - NO Refl Azimuthal Pattern at 698 MHz enlarge 314KB, 1024x1024 12 H+U 2-Bay + Rect. Loop (RLH2) - NO Refl Azimuthal Pattern at 758 MHz enlarge 313KB, 1024x1024 13 H+U 2-Bay + Rect. Loop (RLH2) - NO Refl Azimuthal Pattern at 806 MHz enlarge 32KB, 791x1024 14 H+U 2-Bay + Rect. Loop (RLH2) - NO Refl 4nec2 File Contains Dimensions enlarge 93KB, 334x1024 15 H+U 2-Bay + Rect. Loop (RLH2) - NO Refl Side View Bows Swept Forward 0.5-in so don't Touch [1 large square = 2.5 inches] enlarge 156KB, 1024x677 16 H+U 2-Bay + Rect. Loop (RLH2) - NO Refl Hi-VHF Raw Gain = 3.4 to 3.6 dBi enlarge 166KB, 1024x677 17 H+U 2-Bay + Rect. Loop (RLH2) - NO Refl Hi-VHF SWR (300-ohms) Under 3.4 enlarge 222KB, 1024x741 18 H+U 2-Bay + Rect. Loop (RLH2) - NO Refl Hi-VHF Impedance enlarge 312KB, 1024x1024 19 H+U 2-Bay + Rect. Loop (RLH2) - NO Refl Azimuthal Pattern at 174 MHz enlarge 312KB, 1024x1024 20 H+U 2-Bay + Rect. Loop (RLH2) - NO Refl Azimuthal Pattern at 198 MHz enlarge 315KB, 1024x1024 21 H+U 2-Bay + Rect. Loop (RLH2) - NO Refl Azimuthal Pattern at 216 MHz
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