Instruction Sheets for Part Number DXE-RFS-SYS-4P
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Receive Four-Square Complete Array Packages
Receive Four-Square Complete Array Package, w/4 Active Receive Verticals, Cable, Tools, 13.8 VDC, Kit
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Overview
Receive Four-Square Complete Array Packages
DX Engineering Receive Four-Square Complete Array Packages are advanced four-square receiving systems that use four symmetrically spaced elements to provide switching for a 4-direction receiving antenna system.
These unique systems use time delay phasing, rather than the single band phase shifting used in traditional four-squares. When used with active receive elements, this time delay phasing scheme provides the correct phase relationship across a wide frequency range, producing useful front-to-rear ratio (F/R) response over several bands.
These systems use directionally optimized time delays to produce wider and deeper rear nulls. Wide null areas and a narrow main lobe greatly reduce noise and undesirable signals. DX Engineering Receive Four-Square Complete Array Packages are more reliable than a conventional transmitting four-square system in receiving applications. Transmitting four-squares use large, exposed contact relays which can become contaminated or corroded. The RFS uses sealed relays with contacts optimized for receiving applications.
Features include:
* W8JI unique patented design
* Stainless steel chassis and hi-impact poly-resin drip edge cover for enhanced weather resistance
* Reduced susceptibility to high angle signals compared to EWE, Flag, Pennant, and K9AY
* Operates from 100 kHz to 30 MHz
* Excellent directivity in small space for better signal-to-noise ratio
* Switching of four 90 degree spaced directions
* Directivity over a very wide frequency range using DX Engineering Active Receive Antennas
* Requires less space than a Beverage antenna; active elements need only a minimal ground system
* Easier to deploy and maintain than a 4-direction Beverage antenna system
* Using active elements, system allows close proximity to transmit antennas using transmit/receive sequencer
* Enhanced relay contact reliability
* Low current, DC-powered control console allows system operation without AC power mains
Kits include:
* One DXE-ARAV3-4P package of four active receive vertical antennas with internal antenna disconnect relays
* One DXE-RFS-3 receiving four-square antenna switch
* One DXE-EC-4 four-position control console
* One DXE-TVSU-1A time variable sequence unit
* One DXE-6UF-1000 1,000 ft. rolls of 75 ohm self-healing coaxial cable
* Twenty-five DXE-SNS6-25 Snap-N-Seal connectors
* One DXE-SNS-CT1 Snap-N-Seal crimp tool
* One DXE-CPT-659 Coax Cable Stripping Tool with one replacement blade
Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information.
Contesters and DXers can reap great operational rewards from DX Engineering Receive Four-Square Complete Array Packages!
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