Overview

DX Engineering Receive Four Square Array Controllers

The patented DXE-RFS-3 DX Engineering Receive Four Square Array Controllers are the heart of a sophisticated receiving system that uses time delay phasing rather than the conventional narrow-band, frequency-dependent phasing systems. The time delay phasing is directivity-optimized to produce wider and deeper rear nulls and a narrower main lobe. The result is that noise and undesirable signals are greatly reduced for a superior front-to-rear ratio (F/R). Better control of phase and currents provides a cleaner pattern than those found on available transmit four square arrays.

The RFS-3 DX Engineering Receive Four-Square Array Controllers are the switch relay units that are optimized to use the DX Engineering's Active Vertical Antenna Package DXE-ARAV4-4P of four active verticals. These products together offer great F/R response over octaves of bandwidth. DX Engineering's Active Receive Antenna System offers excellent receiving performance from 100 kHz to 30 MHz, while using only a 8.5 ft. antenna element. A unique design makes it vastly superior to traditional active antennas in both strong signal handling and feedline decoupling. This results in significantly better weak signal reception due to lower spurious signal interference and reduced noise.

Finally, these systems offer greater reliability in receiving applications. The RFS-3s use sealed relays sized for receiving applications with silver contacts to prevent oxidation and contamination. Most transmitting four-square switches use large, open-frame relays where the contacts are exposed to air, which can lead to contamination. Relays with brass contacts can oxidize, leading to poor conductivity.

Advantages of the RFS-3 Receive Four-Square Antenna Systems over other small or medium-size receiving arrays include:

* Reduced susceptibility to high angle signals compared to EWE, Flag, Pennant, and K9AY antennas
* Excellent directivity in a small space for better signal-to-noise ratio
* Switchable in four 90 degree spaced directions
* Directivity over a very wide frequency range using DX Engineering DXE-ARAV4-4P active elements
* Less physical space required than a Beverage antenna, and active elements need only a minimal ground system
* Enhanced relay contact reliability

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