21
Typical System Configurations
In most cases, the operator will purchase the RTR-2 because they want to use a receive antenna on a
transceiver which lacks a receive antenna input. See the text below and use Diagram 1B for an
example using the RTR-2 with a transceiver having a Receive Input and Output.
All transceivers under 200 watts output may be connected to the RTR-2 as is shown in
Diagram
One
, and all other diagrams, even if it has a receive antenna input.
Diagram 1
illustrates the positions and connections to a standard transceiver with optional receive
enhancement products from DX Engineering. A simple Beverage antenna or receiving wire loop
antenna may be connected directly to the
RX ANT
connector on the RTR-2. A single
DXE-
ARAV3-1P
Active Receive Vertical uses DC power, enabled by the internal Bias Tee jumper, on
the
RX ANT
input.
Diagram 2
illustrates how to connect the RTR-2 to a transceiver using available receive input and
output connectors. For informational example purposes, here is a partial listing of the transceivers
that can benefit from connections with the RTR-2: Yaesu FT-1000 series, FT-1000MP/ MKV
series, FT-2000/5000/9000 series; Icom IC-7851, IC-7800, IC-7700, IC-7600, IC-765, IC-761 and
IC-781.
Most high-end transceivers, old and new, offer a receive antenna input that DOES NOT interrupt or
switch off during transmit even though the receiver is muted. Also, on many transceivers, connection
of a receive antenna to the RX IN port means that the RX OUT to RX IN jumper patch cord must be
removed. Then the transmit antenna cannot be heard. For operators of these high-end transceivers, the
RTR-2 offers two benefits. First and foremost, it can protect the front end with automatic
disconnection of the receive input, preserving QSK, full break-in CW (use partial break-in CW
operation when using Bias Tee powered active receive antennas) with 4 ms response. Second, the
RTR-2 offers a simple and handy way to toggle between listening to receive and transmit antennas
with a front panel switch. The RTR-2 option slot for the
DXE-RG5000HD-PM
Receiver Guard plug-
in module will help protect your receiver from damage due to strong received signals.
The RTR-2
RX ANT
connector is used for the receive antenna system signals. The transceiver RF
output is connected to the transmit antenna or amplifier. The transceiver amplifier keying line must
be connected to the RTR-2
RADIO PTT
connector to enable reception of the receive antenna
signal. Customer supplied RF patch cords must be used to connect to the SO-239 RADIO and
MAIN ANT IN
ports on the RTR-2 to the RX IN and OUT ports on a transceiver, respectively,
replacing the existing jumper patch cable. In most cases these are simply two patch cords with PL-
259s on one end and male RCA phono plugs on the other end. This connection will never allow
transmitted RF into the front end of the transceiver. Since the RX OUT carries only the received
transmit antenna signals, the RTR-2 will allow monitoring of either receive, or transmit antenna as
described in this manual. This connection scheme is applicable for the radios listed above, as well
as others not listed, which offer RX IN and OUT. This transceiver connection scheme may also be
adapted for use with any of the diagramed system configurations. If your transceiver has only a
receive antenna input but no RX OUT, use the standard connection methods depicted in the
diagrams.
Diagram 3
shows a typical system which connects a standard transceiver to the RTR-2 for
operation with a receive antenna and an HF amplifier.
