Winegard HD6055P

The Winegard HD6055P is a log-Yagi array with eight elements on an 81″ boom. Four of the elements are driven. A shorted transmission line terminates at a passive reflector.

The HD6055P replaced the HD6065P, a ten-element design on a 127″ boom. The first eight elements have identical positions and almost exactly the same lengths. It appears that Winegard simply deleted two elements without redesigning the antenna.

I modeled the antenna with the AO 9.59 Antenna Optimizer program. This image shows the antenna geometry.

This shows the phasing lines in John S. Allen's HD6055P in Waltham, Massachusetts. The lower lines connect to rivets at the underside of the insulators, while the upper lines connect directly to the elements. The rivets electrically lengthen each lower line by 2″. This causes some pattern asymmetry visible in the plots below.

Modeling Notes

The HD6055P and HD6065P use a plastic feedpoint box that snaps onto parallel feeders. The box contains an F-connector and a printed-circuit matching network consisting of thick and thin PCB traces, shunt capacitor, and dual-core ferrite balun. I removed the feedpoint box from an HD6065P and measured the 75Ω return loss as > 40 dB at 98 MHz (> 25 dB over 88108 MHz) with 130Ω and 9.3 pF across the feeder terminals. To obtain unity SWR at this antenna impedance, I added 283.6 nH, which resonates with 9.3 pF at 98 MHz, across the model feedpoint and set the SWR reference impedance to 130Ω. I assume that the HD6055P and HD6065P matching networks are the same.

The phasing lines surround a 1″-square boom, but the upper and lower lines are not equidistant from it. This may couple unwanted signals. I did not model this effect.

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.

Modeling Results

Calculated performance is for 28 analysis segments per conductor 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     103 + j135   3.08     1.31      0.04      5.47     16.10
    89     122 + j120   2.51     0.89      0.04      5.84     16.43
    90     117 + j96    2.15     0.62      0.03      6.22     16.80
    91     114 + j89    2.07     0.57      0.03      6.37     18.73
    92     111 + j86    2.05     0.55      0.03      6.43     20.02
    93     112 + j85    2.03     0.53      0.03      6.49     21.10
    94     116 + j84    1.97     0.49      0.02      6.57     21.93
    95     123 + j79    1.85     0.41      0.02      6.69     22.44
    96     131 + j69    1.69     0.29      0.02      6.84     22.48
    97     133 + j54    1.50     0.18      0.02      7.00     21.82
    98     127 + j35    1.32     0.08      0.02      7.15     20.60
    99     114 + j23    1.26     0.06      0.02      7.22     19.39
   100    97.9 + j18.2  1.38     0.11      0.02      7.21     18.40
   101    82.8 + j20.2  1.63     0.26      0.02      7.11     17.55
   102    70.7 + j27.0  1.95     0.47      0.02      6.94     16.84
   103    62.5 + j43.9  2.38     0.79      0.07      6.17     14.03
   104    63.6 + j50.4  2.43     0.83      0.03      6.68     15.87
   105    67.7 + j64.5  2.52     0.89      0.03      6.68     15.60
   106    82.2 + j78.9  2.38     0.79      0.03      6.83     15.41
   107     130 + j87    1.93     0.46      0.04      7.21     15.15
   108     191 + j1     1.47     0.16      0.05      7.52     14.56

Antenna File

Winegard HD6055P
Free Space
98.000 MHz
109 6063-T832 wires, inches

v = .11		; feeder wire diameter
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	; lower phasing line midsection
h = w + .5	; reflector shorting strap
b = 1.1		; equivalent diameter at mounting brackets

1  45     -1 -1  45      1 -1   v	; feedpoint
1  42      r  0  43.5    r  0   v
1  43.5    r  0  43.625  1 -1   v
1  43.625  1 -1  45      1 -1   v
1  42     -r  0  43.5   -r  0   v
1  43.5   -r  0  43.625 -1 -1   v
1  43.625 -1 -1  45     -1 -1   v

1   0    r 0   0    35.5   0  .375
1   0   -r 0   0   -35.5   0  .375

1  10.5  r 0  10.5  33     0  .375
1  10.5 -r 0  10.5 -33     0  .375

1  21    r 0  21    28     0  .375
1  21   -r 0  21   -28     0  .375

1  31.5  r 0  31.5  26     0  .375
1  31.5 -r 0  31.5 -26     0  .375

1  42    r 0  42    24     0  .375
1  42   -r 0  42   -24     0  .375

1  50.5 -25.25 0  50.5 -2.5  0  .375
1  50.5  -2.5  0  50.5  2.5  0    b
1  50.5   2.5  0  50.5 25.25 0  .375
1  63.5 -25.25 0  63.5 -2.5  0  .375
1  63.5  -2.5  0  63.5  2.5  0    b
1  63.5   2.5  0  63.5 25.25 0  .375
1  80.5 -25.25 0  80.5 -2.5  0  .375
1  80.5  -2.5  0  80.5  2.5  0    b
1  80.5   2.5  0  80.5 25.25 0  .375

1  0 r -w      0 0 -h      p	; reflector shorting strap
1  0 0 -h      0 -r -w     p
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 0      0 -r -w     d	; rivet
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

shift x 10.5
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 0      0 -r -w     d	; rivet
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

shift x 21
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 0      0 -r -w     d	; rivet
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

shift x 31.5
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 0      0 -r -w     d	; rivet
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 source
Wire 1, center 283.6 nH		; matching network

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.
Set SWR reference impedance to 130 ohms.

March 31, 201688108 MHz