The Winegard HD-6000 is a dual-driven Yagi with four elements on a 31″ boom. Winegard used to call it the ProStar PR-6000.
I modeled the antenna with the AO 8.50 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 1"-long rivets. The resulting asymmetrical element currents cause some pattern asymmetry visible in the plots below. I did not model the boom that the phasing lines surround.
Bryce Foster, KG6VSW, uses 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.
Below are calculated performance figures for a segmentation density of 50 segments per halfwave. Mismatch loss is due to SWR. Wire loss is due to conductor resistance. Mismatched gain is forward gain including wire and mismatch losses. F/R is the ratio of forward power to that of the worst backlobe in the rear half-plane. The SWR reference impedance is 300Ω.
88.000 MHz: Impedance 86.2 + j236 ohms
SWR 5.75
Mismatch Loss 2.97 dB
Wire Loss 0.07 dB
Mismatched Gain 1.92 dBd
F/R 7.12 dB
93.000 MHz: Impedance 357 + j65 ohms
SWR 1.30
Mismatch Loss 0.08 dB
Wire Loss 0.02 dB
Mismatched Gain 4.09 dBd
F/R 13.89 dB
98.000 MHz: Impedance 254 - j70 ohms
SWR 1.35
Mismatch Loss 0.10 dB
Wire Loss 0.01 dB
Mismatched Gain 3.75 dBd
F/R 13.05 dB
103.000 MHz: Impedance 189 - j88 ohms
SWR 1.80
Mismatch Loss 0.37 dB
Wire Loss 0.01 dB
Mismatched Gain 3.55 dBd
F/R 14.33 dB
108.000 MHz: Impedance 151 - j94 ohms
SWR 2.24
Mismatch Loss 0.68 dB
Wire Loss 0.01 dB
Mismatched Gain 3.55 dBd
F/R 16.79 dB
Calculated
88 98 108 MHz
Gain 1.9 3.7 3.6 dBd (balun loss not included)
F/B 7 14 19 dB
88 98 108 MHz
Gain 5 5 5.2 dBd
F/B 6 14 16 dB
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. Disable bent-wire correction.
88–108 MHz