BV205CA.YW, optimized Hy-Gain 205BA 14.0 14.175 14.35 MHz 5 elements, inches 4.000 1.250 1.125 0.875 0.625 0.438 0.000 3.625 40.875 46.000 50.500 24.000 62.625 72.000 3.625 31.375 46.000 50.500 24.000 53.500 144.000 3.625 17.375 46.000 50.500 24.000 63.875 218.000 3.625 13.125 46.000 50.500 24.000 61.625 408.000 3.625 13.125 46.000 50.500 24.000 55.000 The element taper is that of the Hy-Gain 205BA (not 205CA). Note that the 4.0000" o.d. section is modeling the element clamp and boom, and that the length of the 1.250" section is shortened by the length of the 4.0000" section. The 7/16" (0.4375") tips for this design are longer than the original tips and will have to be obtained locally. The front-to-rear ratio is better than 20 dB across the whole band, with an SWR less than 2:1 across the whole band, and a mid-band free-space gain of 9.2 dBi. Torque compensator is 2.5" OD PVC, 80.5" long, mounted 12" behind Director 3, on flat metal plate with U-bolts. Match frequency: 14.175 MHz Driven-element tip: 53.5 inches Cable Z0: 50.0 ohms Hairpin rod diameter: 0.25 inches Hairpin rod spacing: 6.0 inches Hairpin inductance = 0.44 uH Hairpin length = 11.09 inches