Hi-Z Antennas 4-8 PRO Manual - Page 2

Browse online or download pdf Manual for Antenna Hi-Z Antennas 4-8 PRO. Hi-Z Antennas 4-8 PRO 15 pages. Up 8 element circle array

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Hi-Z 4-8PRO as a new install

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Field upgrade of existing Hi-Z 4 systems to Hi-Z 4-8PRO UP

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Pushing the envelope of best performance in the smallest possible footprint (113 foot diameter)

Benefits:

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Substantially reduced signal attenuation at direction overlap points

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160, 80, 40 meters coverage

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Hi-Z Amp design, no need for radials (we do not use passive elements)

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Uses the same area of the Hi-Z 4 (80ft. sq.) footprint, just add 4 more elements

At the end of the manual there is a vertical payout diagram with dimensions.

Component List for the Hi-Z 4-8PRO System

1 – Hi-Z 4-8PRO PnP Controller

1 – Hi-Z 8 direction shack switch

4 – Hi-Z Amps

4 – 2 foot long RG6 cables

2 – 2 foot long wire with terminals (power to PnP controller)

Background Information & Design Philosophy

Trying to use a 4 element system for 8 directions creates too many compromises and limited performance typically in

the 4 directions at 45 degrees to the diagonals. This was not an option. The standard 4 element RX array system

has an inherent weakness at the 4 overlap points. For example, when clicking between NE and SE directions, trying

to listen to a signal from the East, this signal would typically be down by >4db as it is in the overlap region. The goal

was to have the directional RDF of the standard Hi-Z 4 (12.2RDF) in 8 directions with minimal attenuation at the

overlap. Another design goal was to make it upgradeable with existing Hi-Z 4 installs as simple as possible. Since

the Hi-Z 4 is typically installed in an 80 foot square pattern, this is a 113 foot diameter circle, was to add the 4

additional elements in-between the existing 4 elements. Thusly, maintaining the same radius for all elements.

The directional lobe of the Hi-Z 4-8PRO is the same as the Hi-Z 4.

Hi-Z 4-8PRO UP Manual V1.0

Note: overlap point down by >4db