Specifications

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Active Receive Antenna Systems
DX Engineering’s Active Receive Antenna Systems o er
excellent receiving performance using a 102" whip antenna.
The unique design is vastly superior to traditional active
antennas in both signal handling and feedline decoupling. You
get significantly better weak signal reception.
Available in vertical or horizontal dipole configurations, the
systems include a non-conductive mounting plate, clamps,
active matching system, and the 102" stainless steel whip
elements. The horizontal dipole element uses two 102" whips
for an overall length of 210"; the vertical configuration uses a
single whip. Whip antennas have excellent wind survival and
are very inconspicuous.
When space is limited, use the DXE-ARAV3-1P or DXE-ARAH3-1P in conjunction with the
DXE-TVSU-1 to provide for operation within 1/10-wavelength of a transmit antenna. The
active antennas have relay protection to prevent overload of the transmit signal. The
DXE-TVSU-1A sequencer controls switching times to ensure the receive system is
protected before transmit power is applied. Use the DXE-ARAV3-4P, DXE-TVSU-1A
and DXE-RFS-2 to provide four-square operation within 1/10-wavelength of a
transmit antenna.
The vertical configuration can be used as a single element or in combination with
DX Engineering’s RFS-2 Receive Four-Square Antenna System to build a broadband
directional array that can be switched in four directions to peak the signal or null
out noise. Vertical configurations are for suburban or rural locations with low levels
of ground wave propagated noise. The dipole configuration makes a very sensitive,
horizontally polarized receiving antenna. Horizontal polarization can greatly reduce
ground wave propagated noise in congested urban environments. Light weight and
low wind resistance reduces support requirements. The output connector is a Type F,
allowing use of readily available high performance CATV feedlines and connectors .
Features
• Sensitive—weak signal sensitivity rivaling full size antennas
• Wide bandwidth—100 kHz to 30 MHz
• Excellent strong signal handling—outstanding third order intercept of +30 dBm
• Reduced noise—quiet FET followers and high feedline shield isolation
• Easy mounting and installation—pre-drilled mounting plate and universal clamps
DXE-ARAH3-1P Active Receive Antenna,
Horizontal Configuration with Relay .................................$349.95
DXE-ARAV3-1P Active Receive Antenna,
Vertical Configuration with Relay ......................................$248.95
Antennas: Receiving
Horizontal Configuration
Vertical Configuration
Time Variable Sequence Unit
Protect your
active antennas,
transmit/receive
relays and other
equipment with
the DX Engineering
Sequencer. You
have full control
of the timing
between your
rig and amplifier.
This microprocessor-
controlled device provides 0-30 milliseconds of delay in 2 millisecond steps to as many
as five outputs tied to the key-in line. You can sequence the switching of critical devices
such as the transmit/receive relay, amplifier, and exciter.
In addition, the DXE-TVSU-1A has an internal side tone generator for CW. You listen to
what you are keying while it is being held in the bucket brigade delay for transmit a er
the programmed delay. The side tone is adjustable from 300 to 1000 Hz in 50 Hz steps.
Benefits
• Control timing on PTT turn-on, hang delay of PTT, hang delay of amplifier, hang delay
of antenna relay, and turn-on delay of auxiliary output
• Dip switch settable delays of 0-30 milliseconds in 2 millisecond steps
• Side tone generator that follows input of keyer or hand key, not transmitter
• Side tone can be programmed for 300-1000 Hz in 50 Hz steps, adjustable volume
• Supports CW full break-in
• Allows use of our Active Receive Antennas in close proximity to transmit antennas
DXE-TVSU-1A Time Variable Sequence Unit ............................................. $199.95
Feedpoint
Voltage Coupler
• Inject control voltages onto feedline
• Injects +/- 12 Vdc or 12 Vac
• For use with DXE-RBS-1P Reversible
Beverage System or Remote
2-Position Switch DXE-RLS-2
• AC supply included
DXE-FVC-1 Feedpoint Voltage Coupler ....................................................$89.95
Receive Feedline
Current Choke
The Receive Feedline Current
Choke (RFCC) is the most
e ective solution to common-
mode noise or unwanted signal
ingress in receiving systems
available. It provides thousands of
ohms isolation between the input and output coaxial shield connections while passing
desired signals, including DC or low frequency AC control signals. The RFCC has
extremely high isolation impedance, which e ectively blocks common-mode noise or
unwanted signals, even in the presence of very poor grounding. The RFCC is e ective
from 300 kHz to 30 MHz. It comes with standard type F female connectors, although it
can be used in any 50 to 75 Ω receiving system.
DXE-RFCC-1 Receive Feedline Current Choke, 50/75 Ω, 0.3-30 MHz ................$69.95
RTR-1A Antenna
Receive Interface
If you have a standard
transceiver without a separate
receive input port; but you
want to enjoy the advantages
of a separate receive antenna,
DX Engineering has the perfect solution.
Connect an external receive-only antenna to your transceiver with this interface, or
add a TX/RX switch to your older gear, insert a receive preamplifier and add interfacing
antennas to phasing or noise cancelling systems. The RTR-1A also provides failsafe
protection to the unswitched receive antenna port on your expensive transceiver.
This Active Receive Interface handles 200 watts, supports full break-in CW and uses
a patented* low-noise receive antenna limiter circuit. It is RoHS-compliant and well
suited for use from 1.8 MHz to 30 MHz.
DX Engineering’s Active Receive Interface is an invaluable accessory for your shack,
allowing you to expand and improve your antenna connection systems. All the details
on this innovative unit are at DXEngineering.com.
DXE-RTR-1A Receive Antenna Interface .................................................. $159.95
*US Patent 8,175,546
V-Saddle
Clamp
Mounting
Side View
< ARAH system located between
1/10-wavelength and 1/2-wavelength
from the transmitting antenna,
connected to a transceiver with a
receive input using the DXE-TVSU-1A
Time Variable Sequencer Unit for
proper switching.
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