The Winegard HD-6000 is a dual-driven Yagi with four elements on a 33″ boom. Winegard used to call it the ProStar PR-6000.
I modeled the antenna with the AO 9.50 Antenna Optimizer program.
This shows phasing line detail. The red dot is the feedpoint and blue dots mark analysis segments. One phasing line connects directly to the elements, while the other passes through inch-long rivets. The unequal line lengths cause some pattern asymmetry visible in the plots below. Results below are for no boom, while later graphs show the effects of a simple boom model.
Bryce Foster used this HD-6000 indoors at Murfreesboro, Tennessee.
The reflector of one HD-6000 measured 64.5″ long, another was 65″, and Winegard specs the maximum width of the antenna as 65.5″. The image to the left shows tubing interference at the center of the 64.5″ reflector. I used 65.5″ in the model.
The driven elements mount to plastic center insulators with metallic locking flanges. The slits on each side inhibit current over most of the flange length so I did not model them.
The model does not include the 75:300Ω balun that comes with the antenna. Subtract 0.75 dB from the forward gain figures to account for its loss.
Calculated performance figures are for 50 analysis segments per halfwave. Forward gain includes mismatch and conductor losses. F/R is the ratio of forward power to that of the worst backlobe in the rear half-plane.
Frequency Impedance SWR Mismatch Conductor Forward F/R
MHz ohms Loss dB Loss dB Gain dBd dB
88 87.4 + j237 5.69 2.93 0.07 1.95 7.18
89 156 + j265 3.68 1.73 0.05 3.08 9.77
90 242 + j258 2.58 0.94 0.03 3.70 11.81
91 317 + j208 1.94 0.47 0.03 4.00 13.18
92 355 + j134 1.55 0.21 0.02 4.09 13.84
93 357 + j64 1.30 0.07 0.02 4.09 13.88
94 338 + j11 1.13 0.02 0.02 4.01 13.66
95 312 - j22 1.09 0.01 0.02 3.90 14.02
96 291 - j41 1.15 0.02 0.01 3.84 12.93
97 273 - j59 1.26 0.06 0.01 3.80 12.83
98 254 - j71 1.36 0.10 0.01 3.75 13.05
99 236 - j78 1.46 0.15 0.01 3.69 13.29
100 222 - j82 1.55 0.21 0.01 3.64 13.51
101 209 - j85 1.64 0.26 0.01 3.60 13.75
102 198 - j87 1.72 0.32 0.01 3.57 14.02
103 188 - j88 1.80 0.37 0.01 3.54 14.34
104 180 - j89 1.88 0.43 0.01 3.53 14.70
105 172 - j91 1.97 0.49 0.01 3.52 15.13
106 165 - j93 2.05 0.55 0.01 3.53 15.62
107 158 - j95 2.15 0.62 0.01 3.53 16.16
108 151 - j94 2.24 0.69 0.01 3.54 16.78
The unequal distances of the upper and lower phasing lines from the boom can induce current in it. I modeled the 1″ × 1″ square boom as a 1.18″ round conductor at the boom axis. It connects to the uninsulated parasitic elements. This model may not be entirely realistic. The phasing lines may be closer to the boom surface than the algorithm can properly account for. The mast, not modeled, will alter the boom current. Despite these limitations, the model at least should give a qualitative idea of boom effects.
Winegard HD-6000 Free Space 98.000 MHz 32 6063-T832 wires, inches p = .2226 ; phasing line equivalent diameter (.375" x .04") d = .1875 ; rivet diameter w = 1 ; rivet length r = 1.375 ; rivet spacing / 2 s = r - .5 ; phasing line inward bend t = .875 ; phasing line vertical bend y = w + t ; height of lower phasing line midsection b = 1.1 ; equivalent diameter at mounting brackets ref = 32.75 ; element half-lengths de1 = 29.5 de2 = 21.125 dir = 23.25 refp = 0 ; element positions de1p = 12.5 de2p = 23 dirp = 31 1 de2p -r -w de2p r -w #22 copper ; feedpoint jumper 1 refp -ref 0 refp -2.5 0 .375 1 refp -2.5 0 refp 2.5 0 b 1 refp 2.5 0 refp ref 0 .375 1 de1p r 0 de1p de1 0 .375 1 de1p -r 0 de1p -de1 0 .375 1 de2p r 0 de2p de2 0 .375 1 de2p -r 0 de2p -de2 0 .375 1 dirp -dir 0 dirp -2.5 0 .375 1 dirp -2.5 0 dirp 2.5 0 b 1 dirp 2.5 0 dirp dir 0 .375 shift x de1p 1 0 -r 0 0 -r -w d ; rivet 1 0 r 0 1.875 r 0 p ; top phasing line 1 1.875 r 0 2 s 0 p 1 2 s 0 2.125 s t p 1 2.125 s t 2.5 0 t p 1 2.5 0 t 8 0 t p 1 8 0 t 8.25 -s t p 1 8.25 -s t 8.375 -s 0 p 1 8.375 -s 0 8.5 -r 0 p 1 8.5 -r 0 10.5 -r 0 p 1 0 -r -w 1.875 -r -w p ; bottom phasing line 1 1.875 -r -w 2 -s -w p 1 2 -s -w 2.125 -s -y p 1 2.125 -s -y 2.5 0 -y p 1 2.5 0 -y 8 0 -y p 1 8 0 -y 8.25 s -y p 1 8.25 s -y 8.375 s -w p 1 8.375 s -w 8.5 r -w p 1 8.5 r -w 10.5 r -w p 1 10.5 r -w 10.5 r 0 d ; rivet 1 10.5 -r -w 10.5 -r 0 d ; rivet 1 source Wire 1, center Mounting brackets: 5" x 1.5" x 0.5" x .05" U-channels, 0.5" reinforcement sheaths. Bracket equivalent diameter calculated with YO 7.70. Phasing line equivalent diameter calculated with W9CF formula. Driven element locking flanges not modeled.
88–108 MHz