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holl_ands | Home > Multi-Bay Bowtie Antennas > UHF 4-Bay Bowties with Reflector > Browse:Ch22 FF4 4-Bay Bowtie + DARNEW UHF Free-Form 4-Bay + FlatScreenReflUHF Free-Form 4-Bay + DblAnglReflUHF FF4 SingleAngleRefl - DeepSidelobesUHF M4 (10x9.5) Super-4-Bay+DARUHF M4 (9.5x9.0)+DAR Flat vs Swept BowsM4 (9.5x9.0)+DAR Flat v Swept BowsM4 (9.5x9) + Various FLAT Refl. WidthsM4 (9.5x9.0) + 40x34 FLAT Refl at 5-inUHF M4 (9.5x9.0) 4-Bay+FLAT Grid at 5.5"UHF M4 (9.5x9.0) 4-Bay+FLAT Grid at 16"M4 (9.5x9) + Various Number of RRs - OPTUHF KosmicSuperQuad+DAR FlatvsSwept BowsUHF Actual CM4221 Flat Bows & ReflectorUHF CM4221a.ez.nec Flat Bows & ReflectorUHF CM4221HD (Hacked) - 16 ReflRodsUHF CM-4221HD - 10-in WhiskersUHF CM4221HD (Hacked) + Director RodsCM4221HD (Hacked) + Stub FilterAntennacraft U-4000 - 9 Reflector RodsA-D Old DB-4 4-Bay Bowtie with Reflector
UHF CM-4221HD - 10-in Whiskers UHF CM4221HD 4-Bat Bowtie (Hacked) + 16 Reflector Rods, modified Whisker Lengths from 7.9-in to 10.0-in. UHF Raw Gain = 12.2 to 15.4 dBi with SWR under 2.6.  Only 1.0 to 0.5 dB  IMPROVEMENT to UHF Raw Gain, and significantly reduces F/B and especially F/R Ratios. Hi-VHF Raw Gain is 7 to 8 dBi, except lower on Ch12...but to REAR on Ch7-11 and FORWARD on Ch13. Date(s): 26 Oct 2013. Album by holl_ands. 1 - 24 of 24 Total. 4330 Visits.
enlarge 121KB, 589x1024 1 UHF CM-4221HD - 10-in Whiskers 3D View enlarge 277KB, 766x1024 2 UHF CM-4221HD - 10-in Whiskers Front View [1 large square = 2.5 inches] enlarge 112KB, 415x1024 3 UHF CM-4221HD - 10-in Whiskers Top View [1 large square = 2.5 inches] enlarge 197KB, 1152x686 4 UHF CM-4221HD - 10-in Whiskers UHF Raw Gain = 12.2 to 15.4 dBi UHF F/R Ratio is Poor on Upper Channels enlarge 205KB, 1152x686 5 UHF CM-4221HD - 10-in Whiskers UHF SWR (300-ohms) Under 2.6 enlarge 254KB, 1152x686 6 UHF CM-4221HD - 10-in Whiskers UHF Impedance enlarge 300KB, 1024x1024 7 UHF CM-4221HD - 10-in Whiskers Azimuthal Pattern on 470 MHz enlarge 301KB, 1024x1024 8 UHF CM-4221HD - 10-in Whiskers Azimuthal Pattern on 530 MHz enlarge 302KB, 1024x1024 9 UHF CM-4221HD - 10-in Whiskers Azimuthal Pattern on 590 MHz enlarge 303KB, 1024x1024 10 UHF CM-4221HD - 10-in Whiskers Azimuthal Pattern on 650 MHz enlarge 303KB, 1024x1024 11 UHF CM-4221HD - 10-in Whiskers Azimuthal Pattern on 698 MHz enlarge 303KB, 1024x1024 12 UHF CM-4221HD - 10-in Whiskers Azimuthal Pattern on 758 MHz enlarge 301KB, 1024x1024 13 UHF CM-4221HD - 10-in Whiskers Azimuthal Pattern on 806 MHz enlarge 40KB, 791x1024 14 UHF CM-4221HD - 10-in Whiskers 4nec2 File enlarge 109KB, 344x1024 15 UHF CM-4221HD - 10-in Whiskers Side View [1 large square = 2.5 inches] enlarge 190KB, 1152x686 16 UHF CM-4221HD - 10-in Whiskers Hi-VHF Raw Gain to the REAR is higher on low-mid Channels enlarge 172KB, 1152x686 17 UHF CM-4221HD - 10-in Whiskers Hi-VHF Raw Gain FORWARD is very low, except on higher Channels enlarge 207KB, 1152x686 18 UHF CM-4221HD - 10-in Whiskers Hi-VHF SWR (300-ohms) is Excessive, especially on Higher Channels enlarge 308KB, 1024x1024 19 UHF CM-4221HD - 10-in Whiskers Azimuthal Pattern on 174 MHz enlarge 309KB, 1024x1024 20 UHF CM-4221HD - 10-in Whiskers Azimuthal Pattern on 198 MHz enlarge 312KB, 1024x1024 21 UHF CM-4221HD - 10-in Whiskers Azimuthal Pattern on 216 MHz enlarge 228KB, 1152x549 22 UHF CM-4221HD - 10-in Whiskers BowLen Parameter Sweep at 470 MHz enlarge 226KB, 1152x545 23 UHF CM-4221HD - 10-in Whiskers BowLen Parameter Sweep at 584 MHz enlarge 223KB, 1152x544 24 UHF CM-4221HD - 10-in Whiskers BowLen Parameter Sweep at 698 MHz
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