12
The
DXE-EC-4
BCD Control Console supplies the n12 Vdc operational voltage as well as
the +12 Vdc BCD control voltage. The operational voltage powers the
DXE-RFS-3
Control Unit
which subsequently powers the active receive elements. The BCD switching voltages cause the
DXE-RFS-3
to change the receiving direction of the array.
The
DXE-EC-4
Control Console is configured by default to output the BCD control voltages
needed by the
DXE-RFS-3
. The default direction for the array (toward Element 1) is selected when
LED 1 on the
DXE-EC-4
is illuminated. When positions 2 to 4 are selected on the
EC-4
, the array
switches directions.
Refer to
Diagram
1
for default connection details.
The
DXE-RFS-3
distributes the operating power to the active elements through the individual
element feedlines. The active elements do not work without power. Cutting power to the
DXE-RFS-3
also cuts power to the active elements which causes the
DXE-AVA-2
to ground the
vertical element. Operating with the optional
DXE-TVSU-1B
Sequencer (inserted into the
EC-4
"C" to the
RFS-3
"C" terminal) makes this power switching function automatically.
An alternate configuration (refer to
Appendix A
) which uses the feedline coaxial cable for either
the operational power or the directional control voltages, can be used. This configuration requires
internal jumper changes in the
DXE-RFS-3
, along with additional hardware to couple the proper
voltage to the feedline. For directional control through the feedline, the
DXE-RFS-3
re12
Vdc, ─12 Vdc and 12 Vac. The
DXE-FVC-1
Voltage Coupler can be used to supply these voltages.
In any alternate configuration, do not use coaxial cable or other conductor for more than one
simultaneous use. Refer to
Diagram 2
for connection details of one of several alternate
configurations.
The only reason for using an alternate configuration is to make use of existing 2 or 3 conductor
control cable. Otherwise inexpensive four conductor control cable (
COM-CW-4
) and the default
configuration is recommended.
Installation
The
DXE-RFS-3
Control Unit can be mounted to a galvanized pipe driven
into the ground. The
DXE-RFS-3
unit has been pre-drilled to
accommodate up to a 2 inch OD pipe using the included
DXE-SSVC-2P
Stainless Steel V-Bolt Saddle Clamp for 1" to 2" OD pipe. If smaller pipe
mounting is desired, the optional
DXE-CAVS-1P
V-Bolt Saddle clamp for
pipe from 3/4" to 1-3/4" inches OD is recommended. The controller can
also be mounted on a sturdy wooden post, but provision for grounding the
DXE-RFS-3
unit must be made.
Note:
JTL-12555 Jet-Lube SS-30
Anti-
Seize must be used on all clamps, bolts and stainless steel threaded hardware to prevent galling and
to ensure proper tightening.
The
DXE-RFS-3
is designed to be used with the DX Engineering Active Vertical Antennas. It can
also be used with passive elements. The user manual included with the active elements has
instructions for assembly and installation. As noted in that manual, the active elements should be
