ZCG Scalar
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Phasing Harness for Yagi or Sidemount Dipole Antenna Stack Arrays

A phasing harness is for combining the feed of 2 or 4 antennas into a single 50 ohm input. The antennas may be a stack array formation of either Yagi's or Sidemount Dipoles.

It is important to note that the bandwidth limitation of a phasing harness is 10 % around your centre frequency at -15 dB return loss, less than 1.5:1 VSWR. Broadcasters requiring better return loss or a broader bandwidth should use a power divider.

The ZCG Scalar range of phasing harnesses are assembled from highest quality RG11 coaxial cable and N-Type connectors; male for input and female for output. The junction box features a moulded thermoplastic design for effective water resistance and low passive intermodulation characteristics.

All operate on the same principle of transforming quarterwave sections. These sections are always uneven quarterwave multiples and the multiple is selected to allow correct stacking distance, plus formation of a neat stress relieving loop.

  • PDY harnesses suit Yagi’s.
  • PDD models are for Sidemount Dipoles.
  • The suffix 2 or 4 in the product code signifies either a 2-Way or 4-Way harness.

When ordering, please specify your Transmit Tx and Receive Rx frequencies. Also, for a Yagi harness, we will need advice about the number of elements on each Yagi in the array.

Your harness will be manufactured to exact requirements to suit the standard stacking distances, unless you specify otherwise.

Sidemount Dipoles are generally stacked at 0.7 to 0.8 wavelength separation.

Yagi’s are normally stacked to provide maximum forward gain. The separation distance will vary according to the number of elements and changes from approximately 1.3 wavelengths for 6 element models up to 2 wavelengths for 15 element Yagi’s.

Download Details for Phasing Harness
ORDER CODE
Freq Range
Type
Bandwidth
Connectors
Power
PDY22
70-85 MHz
2-Way Yagi
10%, <1.5:1
N-Male IN, 2 x N-Fem OUT
500 W
PDY32
148-174 MHz
2-Way Yagi
10%, <1.5:1
N-Male IN, 2 x N-Fem OUT
500 W
PDY42
400-520 MHz
2-Way Yagi
10%, <1.5:1
N-Male IN, 2 x N-Fem OUT
500 W
PDY52A
85-100 MHz
2-Way Yagi
10%, <1.5:1
N-Male IN, 2 x N-Fem OUT
500 W
PDY52B
100-118 MHz
2-Way Yagi
10%, <1.5:1
N-Male IN, 2 x N-Fem OUT
500 W
PDYA2
Air 118-136 MHz
2-Way Yagi
10%, <1.5:1
N-Male IN, 2 x N-Fem OUT
500 W
PDY62
520-800 MHz
2-Way Yagi
10%, <1.5:1
N-Male IN, 2 x N-Fem OUT
50 W
PDY82
800-960 MHz
2-Way Yagi
10%, <1.5:1
N-Male IN, 2 x N-Fem OUT
50 W
PDY24
70-85 MHz
4-Way Yagi
10%, <1.5:1
N-Male IN, 4 x N-Fem OUT
500 W
PDY34
148-174 MHz
4-Way Yagi
10%, <1.5:1
N-Male IN, 4 x N-Fem OUT
500 W
PDY44
400-520 MHz
4-Way Yagi
10%, <1.5:1
N-Male IN, 4 x N-Fem OUT
500 W
PDY54A
85-100 MHz
4-Way Yagi
10%, <1.5:1
N-Male IN, 4 x N-Fem OUT
500 W
PDY54B
100-118 MHz
4-Way Yagi
10%, <1.5:1
N-Male IN, 4 x N-Fem OUT
500 W
PDYA4
Air 118-136 MHz
4-Way Yagi
10%, <1.5:1
N-Male IN, 4 x N-Fem OUT
500 W
PDY64
520-800 MHz
4-Way Yagi
10%, <1.5:1
N-Male IN, 4 x N-Fem OUT
50 W
PDY84
800-960 MHz
4-Way Yagi
10%, <1.5:1
N-Male IN, 4 x N-Fem OUT
50 W
PDD22
70-85 MHz
2-Way Dipole
10%, <1.5:1
N-Male IN, 2 x N-Fem OUT
500 W
PDDA2
Air 118-136 MHz
2-Way Dipole
10%, <1.5:1
N-Male IN, 2 x N-Fem OUT
500 W
PDD32
148-174 MHz
2-Way Dipole
10%, <1.5:1
N-Male IN, 2 x N-Fem OUT
500 W
PDD42
400-520 MHz
2-Way Dipole
10%, <1.5:1
N-Male IN, 2 x N-Fem OUT
50 W
PDD62
520-820 MHz
2-Way Dipole
10%, <1.5:1
N-Male IN, 2 x N-Fem OUT
50 W
PDD82
800-960 MHz
2-Way Dipole
10%, <1.5:1
N-Male IN, 2 x N-Fem OUT
50 W
PDD24
70-85 MHz
4-Way Dipole
10%, <1.5:1
N-Male IN, 4 x N-Fem OUT
500 W
PDDA4
Air 118-136 MHz
4-Way Dipole
10%, <1.5:1
N-Male IN, 4 x N-Fem OUT
500 W
PDD34
148-174 MHz
4-Way Dipole
10%, <1.5:1
N-Male IN, 4 x N-Fem OUT
500 W
PDD44
400-520 MHz
4-Way Dipole
10%, <1.5:1
N-Male IN, 4 x N-Fem OUT
50 W
PDD64
520-820 MHz
4-Way Dipole
10%, <1.5:1
N-Male IN, 4 x N-Fem OUT
50 W
PDD84
800-960 MHz
4-Way Dipole
10%, <1.5:1
N-Male IN, 4 x N-Fem OUT
50 W