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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 + 3 ReflRods Ch2, Ch3 and Ch6 Hourglass-Loops with Multiple Reflector Rods analyzed using 4nec2 after Optimization using nikiml's Python Scripts. For best performance on OTHER than Ch2, multiply Dimensions by Rescale Factor F = 57 / (Rescaled Freq). For best performance on OTHER than Ch6, multiply Dimensions by Rescale Factor F = 85 / (Rescaled Freq). a) Ch2 AWG10 Hourglass-Loop with 3 Reflector Rods. On Ch2, Raw Gain = 9.7 to 9.0 dBi, F/B & F/R Ratio Minimum = 11.8 dB and SWR Under 2.7. Total Hourglass Height=150.0-in, Width=91.25-in & Mid Gap=1.0-in. Reflector Rod Lengths=108.5-in with Rod-Rod Spacings=70.0-in and RR-Bowtie Separation=42.25-in. b) Ch2 AWG10 Hourglass-Loop with 3 Reflector Rods, Max Height = 8-feet ("SHORT"). On Ch2, Raw Gain = 8.4 to 7.8 dBi, F/B & F/R Ratio Minimum = 14.5 dB and SWR Under 2.3. Total Hourglass Height=96.0-in, Width=96.0-in (Overly Constrained?) & Mid Gap=1.0-in. Reflector Rod Lengths=96.0-in (Overly Constrained?) with Rod-Rod  Spacings=48.0-in (Overly Constrained?) and RR-Bowtie Separation=37.25-in.  [Need To Rerun.] c) Ch3 AWG10 Hourglass-Loop with 3 Reflector Rods. On Ch3, Raw Gain = 9.9 to 9.2 dBi, F/B & F/R Ratio Minimum = 11.8 dB and SWR Under 2.8. Total Hourglass Height=143.5-in, Width=82.0-in & Mid Gap=1.0-in. Reflector Rod Lengths=97.25-in with Rod-Rod Spacings=69.25-in and RR-Bowtie Separation=38.25-in. d) Ch3 AWG10 Hourglass-Loop with 3 Reflector Rods, Max Height = 8-feet ("SHORT"). On Ch3, Raw Gain = 8.7 to 8.1 dBi, F/B & F/R Ratio Minimum = 14.5 dB and SWR (300-ohms) Under 2.0. Total Hourglass Height=96.0-in, Width=89.0-in & Mid Gap=1.0-in. Reflector Rod Lengths=100.5-in with Rod-Rod Spacings=48.0-in and RR-Bowtie Separation=34.375-in. e) Ch6 AWG10 Hourglass-Loop with 3 Reflector Rods, Max Height = 10-feet. [T.B.D.] f) Ch6 AWG10 Hourglass-Loop with 3 Reflector Rods, Max Height = 7-feet ("SHORT"). On Ch6, Raw Gain = 9.2 to 8.8 dBi, F/B & F/R Ratio Minimum = 15.0 dB and SWR (300-ohms) Under 2.0. Total Hourglass Height=84.0-in, Width=62.9-in & Mid Gap=1.0-in. Reflector Rod Lengths=72.8-in with Rod-Rod Spacings=42.0-in and RR-Bowtie Separation=26.875-in. Date(s): 19Jul2013. Album by holl_ands. 1 - 60 of 60 Total. 9567 Visits.
enlarge 76KB, 745x1024 1 Ch2 Hourglass-Loop + 3ReflRods - OPT 3D View - Max Height = 150-inches enlarge 246KB, 805x1024 2 Ch2 Hourglass-Loop + 3ReflRods - OPT Front View - Max Height = 150-inches [1 large square = 12.5 inches] enlarge 133KB, 534x1024 3 Ch2 Hourglass-Loop + 3ReflRods - OPT Top View - Max Height = 150-inches [1 large square = 12.5 inches] enlarge 184KB, 1152x685 4 Ch2 Hourglass-Loop + 3ReflRods - OPT Raw Gain = 9.7 to 9.0 dBi on Ch2 F/B & F/R Ratio Minimum = 11.8 dB on Ch2 enlarge 196KB, 1152x685 5 Ch2 Hourglass-Loop + 3ReflRods - OPT SWR (300-ohms) Under 2.7 on Ch2 enlarge 241KB, 1152x685 6 Ch2 Hourglass-Loop + 3ReflRods - OPT Ch2-6 Impedance enlarge 311KB, 1024x1024 7 Ch2 Hourglass-Loop + 3ReflRods - OPT Azimuthal Pattern at 54 MHz enlarge 306KB, 1024x1024 8 Ch2 Hourglass-Loop + 3ReflRods - OPT Azimuthal Pattern at 57 MHz enlarge 308KB, 1024x1024 9 Ch2 Hourglass-Loop + 3ReflRods - OPT Azimuthal Pattern at 60 MHz enlarge 121KB, 421x1024 10 Ch2 Hourglass-Loop + 3ReflRods - OPT Side View - Max Height = 150-inches [1 large square = 12.5 inches] enlarge 29KB, 791x1024 11 Ch2 Hourglass-Loop + 3ReflRods - OPT 4nec2 File - Max Height = 150-inches enlarge 22KB, 791x1024 12 Ch2 Hourglass-Loop + 3ReflRods - OPT Contents of Python Control *.bat text File enlarge 77KB, 916x1024 13 Ch2 Hourglass-Loop + 3RR - SHORT OPT 3D View - Max Height = 96-inches enlarge 257KB, 1024x966 14 Ch2 Hourglass-Loop + 3RR - SHORT OPT Front View - Max Height = 96-inches [1 large square = 12.5 inches] enlarge 130KB, 517x1024 15 Ch2 Hourglass-Loop + 3RR - SHORT OPT Top View - Max Height = 96-inches [1 large square = 12.5 inches] enlarge 189KB, 1152x686 16 Ch2 Hourglass-Loop + 3RR - SHORT OPT Raw Gain = 8.4-7.8 dBi on Ch2 F/B & F/R Ratio Minimum = 14.5 dB enlarge 207KB, 1152x686 17 Ch2 Hourglass-Loop + 3RR - SHORT OPT SWR (300-ohms) Under 2.0 enlarge 142KB, 1024x896 18 Ch2 Hourglass-Loop + 3RR - SHORT OPT 3D Pattern (Horizontal Polarization) enlarge 308KB, 1024x1024 19 Ch2 Hourglass-Loop + 3RR - SHORT OPT Azimuthal Pattern at 54 MHz enlarge 304KB, 1024x1024 20 Ch2 Hourglass-Loop + 3RR - SHORT OPT Azimuthal Pattern at 57 MHz enlarge 305KB, 1024x1024 21 Ch2 Hourglass-Loop + 3RR - SHORT OPT Azimuthal Pattern at 60 MHz enlarge 122KB, 510x1024 22 Ch2 Hourglass-Loop + 3RR - SHORT OPT Side View - Max Height = 96-inches [1 large square = 12.5 inches] enlarge 28KB, 791x1024 23 Ch2 Hourglass-Loop + 3RR - SHORT OPT 4nec2 File - Max Height = 96-inches enlarge 22KB, 791x1024 24 Ch2 Hourglass-Loop + 3RR - SHORT OPT Contents of Python Control *.bat File enlarge 70KB, 709x1024 25 Ch3 Hourglass-Loop + 3ReflRods - OPT 3D View enlarge 221KB, 711x1024 26 Ch3 Hourglass-Loop + 3ReflRods - OPT Front View [1 large square = 12.5 inches] enlarge 120KB, 504x1024 27 Ch3 Hourglass-Loop + 3ReflRods - OPT Top View [1 large square = 12.5 inches] enlarge 197KB, 1152x685 28 Ch3 Hourglass-Loop + 3ReflRods - OPT Raw Gain = 9.9 to 9.2 dBi on Ch3 F/B & F/R Ratio Minimum = 11.8 dB enlarge 192KB, 1152x685 29 Ch3 Hourglass-Loop + 3ReflRods - OPT SWR (300-ohms) Under 2.8 on Ch3 [Chart begins on 57 MHz vice usual 54 MHz] enlarge 243KB, 1152x685 30 Ch3 Hourglass-Loop + 3ReflRods - OPT Ch3-6 Impedance enlarge 312KB, 1024x1024 31 Ch3 Hourglass-Loop + 3ReflRods - OPT Azimuthal Pattern at 60 MHz enlarge 308KB, 1024x1024 32 Ch3 Hourglass-Loop + 3ReflRods - OPT Azimuthal Pattern at 63 MHz enlarge 309KB, 1024x1024 33 Ch3 Hourglass-Loop + 3ReflRods - OPT Azimuthal Pattern at 66 MHz enlarge 102KB, 358x1024 34 Ch3 Hourglass-Loop + 3ReflRods - OPT Side View [1 large square = 12.5 inches] enlarge 29KB, 791x1024 35 Ch3 Hourglass-Loop + 3ReflRods - OPT 4nec2 File enlarge 22KB, 791x1024 36 Ch3 Hourglass-Loop + 3ReflRods - OPT Contents of Python Control *.bat text File enlarge 91KB, 903x1024 37 Ch3 Hourglass-Loop + 3RR - SHORT OPT 3D View - Max Height = 96-inches enlarge 257KB, 1009x1024 38 Ch3 Hourglass-Loop + 3RR - SHORT OPT Front View - Max Height = 96-inches [1 large square = 12.5 inches] enlarge 117KB, 487x1024 39 Ch3 Hourglass-Loop + 3RR - SHORT OPT Top View - Max Height = 96-inches [1 large square = 12.5 inches] enlarge 201KB, 1152x685 40 Ch3 Hourglass-Loop + 3RR - SHORT OPT Raw Gain = 8.7 to 8.1 dBi on Ch3 F/B & F/R Ratio Minimum = 14.5 dB on Ch3 enlarge 199KB, 1152x685 41 Ch3 Hourglass-Loop + 3RR - SHORT OPT SWR (300-ohm) Under 2.0 on Ch3 enlarge 242KB, 1152x685 42 Ch3 Hourglass-Loop + 3RR - SHORT OPT Ch2-6 Impedance enlarge 306KB, 1024x1024 43 Ch3 Hourglass-Loop + 3RR - SHORT OPT Azimuthal Pattern at 60 Hz enlarge 306KB, 1024x1024 44 Ch3 Hourglass-Loop + 3RR - SHORT OPT Azimuthal Pattern at 63 Hz enlarge 307KB, 1024x1024 45 Ch3 Hourglass-Loop + 3RR - SHORT OPT Azimuthal Pattern at 66 Hz enlarge 117KB, 494x1024 46 Ch3 Hourglass-Loop + 3RR - SHORT OPT Side View - Max Height = 96-inches [1 large square = 12.5 inches] enlarge 29KB, 791x1024 47 Ch3 Hourglass-Loop + 3RR - SHORT OPT 4nec2 File - Max Height = 96-inches enlarge 22KB, 791x1024 48 Ch3 Hourglass-Loop + 3RR - SHORT OPT Contents of Python Control *.bat text File enlarge 74KB, 816x1024 49 Ch6 Hourglass-Loop + 3RR - SHORT OPT 3D View - Max Height = 84-inches enlarge 207KB, 871x1024 50 Ch6 Hourglass-Loop + 3RR - SHORT OPT Front View - Max Height = 84-inches [1 large square = 12.5 inches] enlarge 101KB, 451x1024 51 Ch6 Hourglass-Loop + 3RR - SHORT OPT Top View - Max Height = 84-inches [1 large square = 12.5 inches] enlarge 196KB, 1152x686 52 Ch6 Hourglass-Loop + 3RR - SHORT OPT Raw Gain = 9.2 to 9.8 dBi on Ch6 F/B & F/R Ratio Minimum = 15 dB enlarge 209KB, 1152x686 53 Ch6 Hourglass-Loop + 3RR - SHORT OPT Ch6+FM SWR (300-ohms) Under 2.0 enlarge 241KB, 1152x686 54 Ch6 Hourglass-Loop + 3RR - SHORT OPT Ch2-6 + FM Impedance enlarge 305KB, 1024x1024 55 Ch6 Hourglass-Loop + 3RR - SHORT OPT Azimuthal Pattern at 82 MHz (Ch6) enlarge 305KB, 1024x1024 56 Ch6 Hourglass-Loop + 3RR - SHORT OPT Azimuthal Pattern at 85 MHz (Ch6) enlarge 305KB, 1024x1024 57 Ch6 Hourglass-Loop + 3RR - SHORT OPT Azimuthal Pattern at 88 MHz (Ch6) enlarge 93KB, 423x1024 58 Ch6 Hourglass-Loop + 3RR - SHORT OPT Side View - Max Height = 84-inches [1 large square = 12.5 inches] enlarge 29KB, 791x1024 59 Ch6 Hourglass-Loop + 3RR - SHORT OPT 4nec2 File - Max Height = 84-inches enlarge 22KB, 791x1024 60 Ch6 Hourglass-Loop + 3RR - SHORT OPT Contents of Python Control *.bat Script
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