UHF Vertical 6-Bay Bowtie (FF6) with NO Reflector analyzed using 4nec2 after finding best Dimensions using nikiml's Python Optimization Scripts.
UHF Raw Gain = 11.0 to 14.5 dBi and SWR (300-ohms) under 2.9. Hi-VHF Raw Gain = -4.2 to 5.8 to 5.5 dBi and SWR (300-ohms) = 21 to 3.1.
ASSUMED DIMENSIONS (All in inches): Rbow=0.051 = AWG10 Element Wire size [AWG12 thru AWG8 are also good] Rfeed=0.051 = AWG10 Feedline Wire size [AWG12 thru AWG8 are also good] Hop=1.0 = X-Axis Separation at Crossover
OPTIMIZED DIMENSIONS (All in inches, may round to nearest 1/8-in): ZBowII=13.07 = Distance between the Centers of the two INNER Bowties ZBowOI=11.13 = From Center of INNER Bowtie to Center of OUTER Bowtie ZBowOE=9.02 = From Center of OUTER Bowtie to Center of EXTERIOR Bowtie BowLeni=11.63 = INNER Bow Whisker Length (lose some in bend) BowLeno=7.71 = OUTER Bow Whisker Length (lose some in bend) BowLenE=7.82 = EXTERIOR Bow Whisker Length (lose some in bend) TineSepi=7.57 = INNER Bow Tine Separation TineSepo=5.60 = OUTER Bow Tine Separation TineSepE=3.57 = EXTERIOR Bow Tine Separation FeedSep=3.33 = Separation between two FEEDLINE wires ZCross=2.18 = From Center of Feedline Cross-Over to Center of OUTER Bowtie ZCrossE=3.01 = From Center of Feedline Cross-Over to Center of EXTERIOR Bowtie
Date(s): 11 Dec 2014. Album by holl_ands. 1 - 19 of 19 Total. 11980 Visits.
enlarge 73KB, 557x1024 1 UHF Vertical 6-Bay Bowtie - NO Refl 3D View
enlarge 188KB, 567x1024 2 UHF Vertical 6-Bay Bowtie - NO Refl Front View [1 large square = 5 inches]
enlarge 40KB, 791x1024 3 UHF Vertical 6-Bay Bowtie - NO Refl 4nec2 File - Optimized ONLY for UHF Band
enlarge 148KB, 1024x741 4 UHF Vertical 6-Bay Bowtie - NO Refl UHF Raw Gain = 11.0 to 14.5 dBi
enlarge 184KB, 1024x741 5 UHF Vertical 6-Bay Bowtie - NO Refl UHF SWR (300-ohms) Under 2.9
