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Hi-Z Antennas HIZ-PC-4A Manual

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High Performance HF Receiving array Systems
And Components
HIZ-PC4A-ManualR4.PDF
Stock Number HIZ-PC-4A
Designed for 160 meters through 40 meters and useful at 30 meters and above.
*This All-New Phase Controller is the Heart of the Hi-Z 4 Element receiving Array.
This phasing system allows the selection of 4 different receiving directions when used
in combination with shortened vertical antennas and other Hi-Z subsystems.
This controller is an all-new design providing a new level of previously unobtainable
accuracy. The improved accuracy ensures equal patterns and virtually identical RDF
for all receiving directions.

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Summary of Contents for Hi-Z Antennas HIZ-PC-4A

  • Page 1 High Performance HF Receiving array Systems And Components HIZ-PC4A-ManualR4.PDF Stock Number HIZ-PC-4A Designed for 160 meters through 40 meters and useful at 30 meters and above. *This All-New Phase Controller is the Heart of the Hi-Z 4 Element receiving Array.

  • Page 2: Direction Control

    The Hi-Z Antennas™ HIZ-PC-4A is a signal phasing system that combines the received signals from 4 different shortened vertical elements placed in a square making a phased array. This phased array produces a narrow pattern selectable in 4 different directions while allowing 12 dB maximum of RDF (Relative Directivity Factor) and up to 30 dB of front to back ratio.
  • Page 3 Control wires from the shack to the array need to be 4 wires customer supplied or 5 wires if optional 75 ohm preamp will be switched on and off (75 ohm preamp requires an added relay to work with the SS2 and SS2-Plus shack switches).

  • Page 4: Important Note

    The available stock delay cables calibrated pair at 1.84 MHz which provides for wide- band performance have Part Number HIZ-DL4-60-85 for the 60-foot side dimension and HIZ-DL4-80-113 for the 80 feet per side dimension. The following pages shows the performance at 160 meters, 80 meters, and 40 meters for this array at 60 and 80 feet per side dimension.
  • Page 5 60 Foot per Side. One pair of delay cables of 60 degrees for long delay cable and 30 degrees for short delay cable at 1.84 MHz These delay values are our normal factory recommendation with cables available. Part Number HIZ-DL4-60-85. In our opinion best all-around performance for 60 feet per side.
  • Page 6 60 Foot per Side. One customer adjusted pair of delay cables of 40 degrees for the long delay cable and 20 degrees for the short delay at 1.84 MHz (Max RDF mode) with customer modified delay cables. Good RDF with large side lobes 80 Foot per Side.
  • Page 7 80 Foot per Side. One customer adjusted pair of delay cables of 90 degrees for the long delay cable and 45 degrees for the short delay cable at 1.84 MHz (Max Front to back ratio) with customer modified delay cables. Unusable at 7.2 MHz 80 Foot per Side.
  • Page 8 80 foot per side 80,40 Phase cables Very similar patterns at 160 Meters with 60 or 80 foot side dimensions. THANK YOU for selecting Hi-Z Antennas™. Hi-Z Service Department We do maintain a service area where we try to provide very rapid turn around of repairs. Typically we can return repaired equipment within a few business days.

  • Page 9: Appendix A: Element Construction Examples

    HIGH PERFORMANCE HF RECEIVING SYSTEMS & COMPONENTS Appendix A: Element Construction EXAMPLES Over the years since the Hi-Z Antennas array availability announcement there have been countless designs of the antenna elements themselves and the necessary mounting type of insulator. As it turns out the length of the elements are not necessarily critical as long as all elements in an array are the same length and physical construction.
  • Page 10 Aluminum tubing at Hi-Z Antennas was sourced from DX Engineering or Texas Towers. Hopefully there is enough information following here to allow one to make their own elements or purchase them from DX Engineering.
  • Page 11 In addition here are some early designs by customers. Some were later modified to cover for rain or reduce height above ground. Elements should NOT be raised above ground by more than a few inches..
  • Page 13 This was a pretty successful design but there was another improvement. We began using a ¾ inch OD Fiber Glass insulator material from McMaster Carr that fit right into the 7/8 inch diameter bottom element...
  • Page 14 The PVC shim added clamping power to the bottom tubing extension. This last design was very successful and the end of the element production at Hi-Z Antennas. The latest year 2020 Hi-Z Amplifiers being in a smaller package can use a smaller diameter and length rain cover.

  • Page 15: Appendix B For The Hiz-Pc4A Manual

    High Performance HF Receiving array Systems And Components Appendix B for the HIZ-PC4A Manual www.hizantennas.com or e-mail contact@hizantennas.com Hi-Z Antennas™ 8125 SW Larch Drive Culver, OR 97734 USA www.hizantennas.com...

  • Page 16: Appendix C For The Hiz-Pc4A And Hiz-Pc8Pro Instruction Manual

    60 feet per side and 80 feet per side for the 4 element versions. The same cables are used for the Hi-Z Antennas recommended 85 feet and the 113 feet diameter 8 element versions. Proper selection of which cable is determined by reading the Hi-Z 4 element or Hi-Z 8Pro manual which shows performance and receiving patterns depending on phase delay values.
  • Page 17 The cables as we supply them are listed in the table below. The lengths may change a small amount if the cable vendor supplies us with a changed Velocity factor for the cable. 4 element 80 feet 4 element 60 feet 8Pro 113 feet 8Pro 85 feet 100.5 feet/50.25 feet...
  • Page 18 High Performance HF Receiving array Systems And Components Appendix D for the HIZ-PC4A Manual There are 4 sets of two pin jumpers on the PC4A circuit board to adjust the array for one of two array size selections. There is a 60 foot per side and an 80 foot per side recommended size selection for best performance of these arrays.
  • Page 19 All 4 pairs must be moved at the same time in order for the array to work properly. More information is available at www.hizantennas.com or e-mail contact@hizantennas.com Hi-Z Antennas™ 8125 SW Larch Drive Culver, OR 97734 USA www.hizantennas.com...

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