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holl_ands | Home > Multi-Bay Bowtie Antennas > UHF 4-Bay Bowties - NO Reflectors > Browse:NEW-UHF Free-Form 4-Bay + NoReflComparison Charts: 4-Bay - NO ReflectorsUHF Free-Form 4-Bay Bowtie - NO Reflmclapp's M4 (10.0x9.5) 4-Bay - NO Refl.UHF Kosmic SuperQuad (9.75x9.5) NO Refl.mclapp's M4 (9.5x9.0) 4-Bay - NO Refl.mclapp M4 (9.5x9.0x8.5) 4-Bay - NO ReflUHF CM4221HD (Hacked) - No ReflectorCM4221 Actual Measurements - if NO ReflCM4221a.ez 4-Bay Bowtie - if NO ReflAntennacraft U-4000 - NO Reflector A-D DB-4 4-Bay Bowtie NO ReflectorUTube 4-Bay Bowtie - NO Reflector
A-D DB-4 4-Bay Bowtie NO Reflector Antennas Direct (Old ) DB-4 4-Bay Bowtie with NO Reflector analyzed using 4nec2. Dimensions per mclapp's 4nec2 file with holl_ands modifications to adjust AGT=1.0 and various FR & RP statements: http://www.frontiernet.net/~mclapp/Antennas/Computer%20Models/ Whisker Length=6.17-in, BowInner-Inner=7.85-in, BowInner-Outer=7.9-in, Tine Separation=1.2-in, Feedline Separation=1.8-in, Hop=1.0-in. Raw Gain falls off on lowest frequencies.  High SWR on low and mid frequencies. Date(s): 13 May 2014. Album by holl_ands. 1 - 15 of 15 Total. 5350 Visits.
enlarge 74KB, 568x1024 1 A-D DB-4 4-Bay Bowtie NO Reflector 3D View enlarge 201KB, 626x1024 2 A-D DB-4 4-Bay Bowtie NO Reflector Front View [1 large square = 2.5-inches] enlarge 89KB, 300x1024 3 A-D DB-4 4-Bay Bowtie NO Reflector Side View [1 large square = 2.5-inches] enlarge 169KB, 1024x675 4 A-D DB-4 4-Bay Bowtie NO Reflector UHF Raw Gain = 4.0-10.2 dBi [Note: Slightly higher towards "Rear".] enlarge 180KB, 1024x675 5 A-D DB-4 4-Bay Bowtie NO Reflector UHF SWR (300-ohms) Under 4.6 is EXCESSIVE enlarge 222KB, 1024x675 6 A-D DB-4 4-Bay Bowtie NO Reflector UHF Impedance enlarge 318KB, 1024x1024 7 A-D DB-4 4-Bay Bowtie NO Reflector Azimuthal Pattern at 470 MHz enlarge 322KB, 1024x1024 8 A-D DB-4 4-Bay Bowtie NO Reflector Azimuthal Pattern at 530 MHz enlarge 325KB, 1024x1024 9 A-D DB-4 4-Bay Bowtie NO Reflector Azimuthal Pattern at 590 MHz enlarge 325KB, 1024x1024 10 A-D DB-4 4-Bay Bowtie NO Reflector Azimuthal Pattern at 650 MHz enlarge 329KB, 1024x1024 11 A-D DB-4 4-Bay Bowtie NO Reflector Azimuthal Pattern at 698 MHz enlarge 328KB, 1024x1024 12 A-D DB-4 4-Bay Bowtie NO Reflector Azimuthal Pattern at 758 MHz enlarge 332KB, 1024x1024 13 A-D DB-4 4-Bay Bowtie NO Reflector Azimuthal Pattern at 806 MHz enlarge 33KB, 791x1024 14 A-D DB-4 4-Bay Bowtie NO Reflector 4nec2 File enlarge 86KB, 286x1024 15 A-D DB-4 4-Bay Bowtie NO Reflector Front View [1 large square = 1.25-inches]
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