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Introduction
The
DXE-RFS-SYS-2P
Receive Four Square Electronics Package
is for the advanced AM
broadcast, short wave listener or amateur radio operator who wants to build a passive receive
antenna system of their own design using the highly sophisticated DX Engineering receive four
square control system.
The
DXE-RFS-SYS-2P
Receive Four Square Package
is a packaged system which includes:
DXE-RFS-3
Receive Four Square Array Controller
DXE-EC4
BCD Control Console
The
DXE-RFS-SYS-2P
allows the system designer unprecedented freedom to build a complete
custom receiving system.
This patented (
US Patent Number 7,423,588
) system array configuration embodies unique phase
and time shifted combining for stable broadband performance.
The
DXE-RFS-SYS-2P
is a sophisticated receiving system that is designed to be used with four
identical vertical symmetrically spaced elements to provide switching for a 4-direction receiving
antenna system. The system 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 found on available transmit four square arrays.
This system offers greater reliability in receiving applications. The
DXE-RFS-SYS-2P
uses 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
DXE-RFS-SYS-2P
Receive Four Square Antenna System 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 when using DX Engineering active elements
Less physical space required than a Beverage antenna
Needs only a minimal ground system
Enhanced relay contact reliability
Low current DC powered control console allows system operation without AC power mains
Failure to make quality feedline or delay line connections might result in an array
that does not work or performs poorly.
