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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
Antennacraft U-4000 - 9 Reflector Rods UHF Antennacraft U-4000 4-Bay Bowtie with 9 Reflector Rods (RR) analyzed using 4nec2. Based on a 4nec2 file posted by user 300ohm. Whisker Length=8.0-in, BowInner-Inner=BowInner-Outer=8.0-in, Tine Separation=5.75-in, Feedline Separation=2.0-in, Hop=0.6-in. Nine Reflector Rods: Length=20.0-in, Rod-Rod Sep.=3.875-in, Total Height=31-in. UHF Raw Gain = 9 to 14 dBi, F/B & F/R Ratio Min. = 13.5 dB and SWR (300-ohms) under 5.1 is EXCESSIVE. Hi-VHF Raw Gain FORWARD = 2.3 to 0.4 to 0.8 dBi and Raw Gain to REAR = 5.8 to 7.5 dBi is HIGHER and SWR (300-ohms) = 100 to 5.5 is EXCESSIVE. Date(s): 9 Jun 2013. Album by holl_ands. 1 - 21 of 21 Total. 4251 Visits.
enlarge 85KB, 586x1024 1 Antennacraft U-4000 - 9 Reflector Rods 3D View enlarge 249KB, 701x1024 2 Antennacraft U-4000 - 9 Reflector Rods Front View [1 large square = 2.5 inches] enlarge 91KB, 360x1024 3 Antennacraft U-4000 - 9 Reflector Rods Top View [1 large square = 2.5 inches] enlarge 178KB, 1152x678 4 Antennacraft U-4000 - 9 Reflector Rods UHF Raw Gain = 9 to 14 dBi UHF F/B & F/R Ratio Minimum = 13.5 dB enlarge 186KB, 1152x678 5 Antennacraft U-4000 - 9 Reflector Rods UHF SWR (300-ohms) Under 5.1 Excessive on lower channels. enlarge 241KB, 1152x678 6 Antennacraft U-4000 - 9 Reflector Rods UHF Impedance enlarge 301KB, 1024x1024 7 Antennacraft U-4000 - 9 Reflector Rods Azimuthal Pattern at 470 MHz enlarge 302KB, 1024x1024 8 Antennacraft U-4000 - 9 Reflector Rods Azimuthal Pattern at 530 MHz enlarge 348KB, 1024x1024 9 Antennacraft U-4000 - 9 Reflector Rods Azimuthal Pattern at 590 MHz enlarge 305KB, 1024x1024 10 Antennacraft U-4000 - 9 Reflector Rods Azimuthal Pattern at 650 MHz enlarge 306KB, 1024x1024 11 Antennacraft U-4000 - 9 Reflector Rods Azimuthal Pattern at 698 MHz enlarge 306KB, 1024x1024 12 Antennacraft U-4000 - 9 Reflector Rods Azimuthal Pattern at 806 MHz enlarge 166KB, 1152x678 13 Antennacraft U-4000 - 9 Reflector Rods Hi-VHF Raw Gain = 5.8 to 7.5 dBi BUT with more Gain to the REVERSE enlarge 111KB, 1152x497 14 Antennacraft U-4000 - 9 Reflector Rods Hi-VHF Raw Gain = 2.3 to 0.4 to 0.8 dBi FORWARD enlarge 206KB, 1152x678 15 Antennacraft U-4000 - 9 Reflector Rods HiVHF SWR (300-ohms) Excessive, especially on lower channels. enlarge 309KB, 1024x1024 16 Antennacraft U-4000 - 9 Reflector Rods Azimuthal Pattern at 174 MHz enlarge 308KB, 1024x1024 17 Antennacraft U-4000 - 9 Reflector Rods Azimuthal Pattern at 198 MHz enlarge 310KB, 1024x1024 18 Antennacraft U-4000 - 9 Reflector Rods Azimuthal Pattern at 216 MHz enlarge 86KB, 271x1024 19 Antennacraft U-4000 - 9 Reflector Rods Side View [1 large square = 2.5 inches] enlarge 29KB, 791x1024 20 Antennacraft U-4000 - 9 Reflector Rods 4nec2 File enlarge 248KB, 1152x678 21 Antennacraft U-4000 - 9 Reflector Rods Hi-VHF Impedance
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