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holl_ands | Home > Yagi Antennas > Browse:Yagi Comparison ChartsUHF 2-El FD-Yagi - OPTimizedUHF 3-El FD-Yagi - OPTimized UHF 4-El FD-Yagi - OPTimizedUHF 5-El FD-Yagi - OPTimized UHF 5-El FLAT Yagi - CM-4040UHF 6-El FD-Yagi - OPTimizedUHF 6-El Asymmetric Dipole Yagi - WA5VJBUHF 7-El FD-Yagi - OPTimizedUHF 7-El FD-Yagi - Opt. by NikimlUHF 8-El FD-Yagi (2ReflRods) - OPTimizedUHF 8-El FLF-Yagi - 300ohm OPTimizedUHF 12-El FD-Yagi - OPTimizedUHF 13-El FD-Yagi (2ReflRod) - OPTimizedUHF 13-El FD-Yagi (2RR) EqualDirs - OPTUHF 13-El FD-Yagi (2ReflRods) - kgbUHF CM4248 15El FD-Yagi + 14RR CornerUHF 16-El Yagi + 6RR Corner Wade CYD1446UHF 17-El Yagi with 6RR's - tfrlicUHF 18-El FD-Yagi (2ReflRods) - OPTUHF 18-El Yagi from snowman53UHF 25-El FD-Yagi (2ReflRods) - OPTUHF 91XG Corner-FD-YagiUHF 91XG - Wider Corner ReflectorUHF 91XG - Wider Bowties, Better Ch14-51UHF 91XG - Taller Corner ReflectorCh14-17 15El FD-Yagi + 14RR Corner - OPTCh14-17 18El FD-Yagi + 10RR Corner - OPTCh14-17 18El FD-Yagi + 14RR Corner - OPTCh14-17 18El FD-Yagi + 20RR Corner - OPTCh14-19 18El FD-Yagi + 20RR Corner - OPTCh14-19 21El FD-Yagi + 20RR Corner - OPTCh22 9-El FD-Yagi - 300ohm OPTimizedCh22 9-El FLF-Yagi - 300ohm OPTimizedCh22 9-El FD-Yagi - 75ohm MTM ScientificCh22 9-El FD-Yagi - 300ohm K7MEMCh22 11-El FD-Yagi - 300ohm K7MEMCh30 18El FD-Yagi + 14RR CornerCh45-51 12-El FD-Yagi - OPTimizedHi-VHF 3-El FD-Yagi - OPTimizedHi-VHF 3-El One-Lamda LFA-YagiHi-VHF 4-El FD-Yagi - OPTimizedHi-VHF 4-El FLF Yagi - OPTimizedHi-VHF 4-El K7MEM Yagi: Folded vs NotHi-VHF 5-El FD-Yagi - OPTimizedHi-VHF 5-El FLF Yagi - OPTimizedHi-VHF 5-El Yagi Optimized by K6STIHi-VHF 6-El FD-Yagi - OPTimizedHi-VHF 7-El FD-Yagi - OPTimizedHi-VHF 8-El K7MEM Yagi: Folded vs NotHi-VHF 8-El FD-Yagi - OPTimizedHiVHF 9-El FD-Yagi - 1 vs 3 Refl. RodsHiVHF 9-El FD-Yagi, Stellar Labs 30-2475Hi-VHF 10-El FD-Yagi - OPTimizedHi-VHF 10-El FD-Yagi - Lorkoe's AntiqueHi-VHF 12-El FD-Yagi - OPTimizedHi-VHF 12-El FD-Yagi (3ReflRods) - kgbHiVHF 13El FD-Yagi - Stellar Labs 302476Hi-VHF 13-El FD-Yagi (2ReflRods) - kgbHi-VHF 16-El FD-Yagi - OPTimizedHi-VHF 18-El FD-Yagi - OPTimizedHi-VHF 20-El FD-Yagi - OPTimizedHi-VHF 22-El FD-Yagi - OPTimizedCh13 5-El Yagi - OPTimized by nikimlCh13 8-El Yagi - OPTimized by K6STICh13 12-El FD-Yagi - OPTimizedCh12 12-El FD-Yagi - OPTimized Ch6 2-El FD-Yagi - OPTimizedCh6 3-El FD-Yagi - OPTimizedCh7 12-El Yagi from v37bqhCh2-6 Antennacraft Y5-2-6 5-El FD-YagiCh3 4-El FD-Yagi - OPTimizedCh3 5-El FD-Yagi - OPTimizedCh3 6-El FD-Yagi - OPTimized
UHF 91XG - Taller Corner Reflector UHF Antennas Direct 91XG modified for TALLER Corner Reflectors analyzed using 4nec2. Investigations revealed that Ken Nist's model for the Corner Reflector was preventing Python Optimization Scripts from running correctly.  To greatly reduce the number of Wires added to the RevF model, I decided to replace the Corner Reflector with a 20 Reflector Rods "equivalent".  An all Reflector Rod replacement would also keep wind resistance to a minimum, an important consideration with a much larger "Wind Vane". THREE versions were analyzed, with only MINOR (0.4 & 0.7 dB) Raw Gain improvements: a) 91XG RevF version with Ken Nist's Corner Reflector replaced by 20 Reflector Rods to verify that results are in general agreement. UHF Raw Gain = 11.2 dBi (470 MHz) to 16.6 dBi (698 MHz), F/R Ratio Minimum = 24.2 dB and SWR under 2.3. b) 91XG RevF version with 6 Reflector Rods added with roughly same separation as originals along a +/- 48-degree line. UHF Raw Gain = 11.6 dBi (470 MHz) to 16.7 dBi (698 MHz), F/R Ratio Minimum = 24.5 dB and SWR under 2.3. c) 91XG RevF version with 12 Reflector Rods added. UHF Raw Gain = 11.9 dBi (470 MHz) to 16.8 dBi (698 MHz), F/R Ratio Minimum = 25.8 dB and SWR under 2.3. Date(s): 23 Aug 2013. Album by holl_ands. 1 - 30 of 30 Total. 5059 Visits.
enlarge 109KB, 1024x724 1 UHF 91XG - Original Corner Reflector=20RR 3D View enlarge 263KB, 882x1024 2 UHF 91XG - Original Corner Reflector=20RR Front View [1 large square = 2.5 inches] enlarge 113KB, 1152x423 3 UHF 91XG - Original Corner Reflector=20RR Top View [1 large square = 12.5 inches] enlarge 190KB, 1018x1024 4 UHF 91XG - Original Corner Reflector=20RR 3D View DETAIL enlarge 247KB, 1024x758 5 UHF 91XG - Original Corner Reflector=20RR Side View DETAIL [1 large square = 2.5 inches] enlarge 333KB, 1018x1024 6 UHF 91XG - Original Corner Reflector=20RR Top View DETAIL [1 large square = 1.25 inches] enlarge 191KB, 1152x686 7 UHF 91XG - Original Corner Reflector=20RR UHF Raw Gain = 11.2 to 16.6 dBi F/R Ratio Minimum = 24.2 dB enlarge 200KB, 1152x686 8 UHF 91XG - Original Corner Reflector=20RR UHF SWR (300-ohms) Under 2.3 enlarge 243KB, 1152x686 9 UHF 91XG - Original Corner Reflector=20RR UHF Impedance enlarge 121KB, 1024x822 10 UHF 91XG - Taller Reflector=20RR+6RR 3D View enlarge 243KB, 718x1024 11 UHF 91XG - Taller Reflector=20RR+6RR Front View [1 large square = 2.5 inches] enlarge 121KB, 1152x442 12 UHF 91XG - Taller Reflector=20RR+6RR Top View [1 large square = 12.5 inches] enlarge 225KB, 1018x1024 13 UHF 91XG - Taller Reflector=20RR+6RR 3D View DETAIL enlarge 299KB, 1024x980 14 UHF 91XG - Taller Reflector=20RR+6RR Side View DETAIL [1 large square = 2.5 inches] enlarge 349KB, 1018x1024 15 UHF 91XG - Taller Reflector=20RR+6RR Top View DETAIL [1 large square = 1.25 inches] enlarge 194KB, 1152x686 16 UHF 91XG - Taller Reflector=20RR+6RR UHF Raw Gain = 11.6 to 16.7 dBi F/R Ratio Minimum = 24.5 dB enlarge 195KB, 1152x686 17 UHF 91XG - Taller Reflector=20RR+6RR UHF SWR (300-ohms) Under 2.3 enlarge 244KB, 1152x686 18 UHF 91XG - Taller Reflector=20RR+6RR UHF Impedance enlarge 144KB, 1024x889 19 UHF 91XG - Taller Reflector=20RR+12RR 3D View enlarge 176KB, 604x1024 20 UHF 91XG - Taller Reflector=20RR+12RR Front View [1 large square = 2.5 inches] enlarge 115KB, 1152x416 21 UHF 91XG - Taller Reflector=20RR+12RR Top View [1 large square = 12.5 inches] enlarge 249KB, 1018x1024 22 UHF 91XG - Taller Reflector=20RR+12RR 3D View DETAIL enlarge 207KB, 1024x650 23 UHF 91XG - Taller Reflector=20RR+12RR Side View DETAIL [1 large square = 5 inches] enlarge 352KB, 1018x1024 24 UHF 91XG - Taller Reflector=20RR+12RR Top View DETAIL [1 large square = 1.25 inches] enlarge 193KB, 1152x686 25 UHF 91XG - Taller Reflector=20RR+12RR UHF Raw Gain = 11.9 to 16.8 dBi F/R Ratio Minimum = 25.8 dB enlarge 195KB, 1152x686 26 UHF 91XG - Taller Reflector=20RR+12RR UHF SWR (300-ohms) Under 2.3 enlarge 243KB, 1152x686 27 UHF 91XG - Taller Reflector=20RR+12RR UHF Impedance enlarge 132KB, 791x1024 28 UHF 91XG - Original Corner Reflector=20RR 4nec2 File enlarge 137KB, 791x1024 29 UHF 91XG - Taller Reflector=20RR+6RR 4nec2 File enlarge 134KB, 791x1024 30 UHF 91XG - Taller Reflector=20RR+12RR 4nec2 File
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