Overview

COMTEK ACB-4 Series Four-Square Switch Relay Units

COMTEK ACB-4 Series Four-Square Switch Relay Units use a well-established design and proven technology to offer any ham an advanced antenna system with s possible. Our phased array systems are affordable, simple to install, and easy to use.

COMTEK ACB-4 Hybrid Four-Square Relay Units are single-band phasing and relay devices. They are typically in stock for every major HF contesting Amateur band and 30 meters; 60 meter array units are available by special order.

Four-Square arrays are single band specific, due to antenna spacing and phasing feedline lengths, and for proper phasing and patterns.

For manual operation, these relay units require the COMTEK ACB-4A Four-Square Control Console. It is now made to run on 12 to 14 Vdc, allowing easy operation of the four square array with battery emergency or International power sources.

A DX Engineering factory-tuned cable feed system for the vertical array (available for your center frequency and sold separately) will provide the best performance. The ACB Series Hybrid Switch Relay Units also require a good 50 ohm, non-inductive dummy load.

Contact DX Engineering for more information on Four Square Array components.

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