4
4 Element overlap pattern Hi-Z 4-8PRO overlap pattern
Material That the Customer Supplies -
1. Additional control wire for CTRL3 connection (if using a 4 conductor cable, the GND connection can be used going
through the RG6 feed coax shield, freeing up one control wire for CTRL3 connection).
2. 4 more verticals exactly like (same height as) or use our verticals, look at
http://www.hizantennas.com/hiz_verticals.htm
3. 4 more short ground rods. Depending on soil type, in the range of 2 –3 feet long.
4. RG6 coax and connectors (connecting the 4 extra verticals to the phase controller and these for new runs MUST be the
same length as the currently installed runs).
5. Make 8 more 9-10” long wires. Wire size can be made from 18 – 20 gauge wire. Terminate each end with #6 ring
terminals. Recommend that after the terminals are crimped, that these terminals are soldered for reliability. For Hi-Z
Amp terminations. These are to connect the 4 new Hi-Z Amps to the new verticals.
6.
Weatherproofing the electronics
. You will need an adequate cover or enclosure that will keep rain and snow off the
phase controller, in-line pre-amp and filters if installed, and the Hi-Z Amps at the base of each vertical. Water getting
inside of these enclosures WILL cause DAMAGE.
OPTIONS
Filters for site specific issues, for example local and or high power AM broadcast stations. Hi-Z Antennas™ makes a BPF look
at
http://www.hizantennas.com/band_pass.htm
http://www.hizantennas.com/high_pass.htm
SITE PREPARATION
Place the verticals as far away from metallic structures or other towers and antennas as possible, especially resonant antennas.
The farther the better. Keep away from field fencing at least 10 feet. Keep the verticals more than 5 feet from trees and heavy
vegetation.
Control Cable and Coax Considerations
1. Recommended RG6 F connector tightening process. See appendix A.
2. Conductor wire gauge selection is a function of the length of the control cable. 18 gauge wires are adequate out to 500
feet. Any longer will need to increase wire gauge size to accommodate the voltage drop over the run of cable length.
An inexpensive source of cable is from Lowes, Home Depot, etc in their electrical department. They have 5, 7, 9
conductor, 18 gauge direct burial sprinkler control cable. Usually they will have it on large spools and can be cut to the
length you require. Always get extra.
3. Make sure that the RG6 connectors are tight and of good quality.
4. If you crimp on terminals on the control cable, go the extra step and solder each terminal for reliability.
Vertical Placement and Installation of the Hi-Z Amplifiers
1. Determine where the array (verticals) will be mounted.
2. The verticals need to be as far away as possible from other antennas, tower and other metallic structures. Especially if
the other antennas are resonant, this will lower performance.
3. Locate the ground rods close to the base of each vertical.
4. Determine the direction orientation. You have 8 directions. So orientation of the verticals is critical to achieving the
directional performance you require and can be different in locations around the world. In the case of the Hi-Z 8PRO
the new verticals will go in-between the existing verticals. Now there will be one vertical every 45 degrees. Typically
Vertical 1 is oriented to North, Vertical 2 to NE through Vertical 8 at NW and so on in a CW fashion.
5. See the diagram on the last page. This will assist you in laying out the accurate placement of your four added verticals.
Hi-Z 4-8PRO UP Manual V1.0
©2011 Hi-Z Antennas™
www.hizantennas.com
