NEW-UHF [470-608 MHz] Free-Form 4-Bay with No Reflector analyzed using 4nec2 after finding "Best" Dimensions using nikiml's Python Optimization Scripts.
UHF Raw Gain = 10.9 to 12.8 to 12.7 dBi and SWR (300-ohms) under 2.5. Hi-VHF Raw Gain = 3.5 to 3.4 dBi and SWR (300-ohms) = 3.4 to 4.1 [A bit Excessive].
DIMENSION STATEMENTS: [May Round to nearest 1/4-in] ' Radius (in inches) of BOWTIE elements: SY Rbow=0.051 [AWG10] ' Radius (in inches) of FEEDLINE wires: SY Rfeed=0.051 [AWG10] ' Separation at Crossover: SY Hop=1.0 ' Conductivity (Copper=3.0e7, Alum=2.0e7, StainlessSteel=1.67e7): SY Cond=3e+07 ' Distance between the centers of the two INNER bowties: SY ZBowII=13.62 ' From center of INNER bowtie to center of OUTER bowtie: SY ZBowOI=12.55 ' INNER Bow Whisker Length (lose some in bend): SY BowLeni=12.97 ' OUTER Bow Whisker Length (lose some in bend): SY BowLeno=8.17 ' INNER Bow Forward Sweep distance at tip of the whisker: SY BowSwpi=0 [Not used in this model] ' OUTER Bow Forward Sweep distance at tip of the whisker: SY BowSwpo=0 [Not used in this model] ' INNER Bow Tine Separation: SY TineSepi=8.54 ' OUTER Bow Tine Separation: SY TineSepo=7.61 ' Separation between two FEEDLINE wires: SY FeedSep=3.85 ' From Center of Feedline Cross-Over to Center of OUTER Bowtie: SY ZCross=1.25
UPDATE (26Nov2017): Uploaded Images with improved viewability (esp. Thumbnails) with NO Change to content.
UPDATE (17Aug2019): Added Dimension Statements.
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