12
may be connected directly to the RX ANT connector on the
DXE-RTR-1A
. If a single
DXE-
ARAV3-1P
Active Receive Vertical is purchased, then the included powering device, model
DXE-
FVI-1
, is placed in-line in the shack between the Active Receive Vertical and the RX ANT input, or
between the optional
DXE-RPA-1
Receive Preamplifier and the
DXE-RFCC
-
1
Receive Feedline
Current Choke.
Diagram 1B
illustrates how to connect the
DXE-RTR-1A
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
DXE-RTR-1A
: Yaesu FT-1000 series, FT-
1000MP/ MKV series, FT-2000 series and FT-9000 series; Icom 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
DXE-RTR-1A
offers two benefits. First and foremost, it can protect the front end
with automatic disconnection of the receive input, preserving very fast break-in operation (full
QSK) with 4 ms response. Second, the
DXE-RTR-1A
offers a simple and handy way to toggle
between listening to the receive and transmit antennas with a front panel switch.
The
DXE-RTR-1A
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
DXE-RTR-1A
TRANSMIT GROUND 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
DXE-RTR-1A
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
DXE-RTR-1A
will allow monitoring of
either the 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 Diagrams 1a and 2 through 9.
Diagram 2
shows a standard transceiver connection arrangement, with the addition of a typical RF
amplifier used on the transceiver output for high power operations. The
DXE-RTR-1A
and a
keyed-on-ground amplifier may be able to share the same grounding keying line from the
transceiver, but the use of an optional amplifier keying interface buffer is recommended. Do not
share the keying line of the
DXE-RTR-1A
with an older amplifier that uses high voltage relays.
NOTE:
The
DXE-RTR-1A may never be used on the output of an RF amplifier.
MAXIMUM RF power allowed through the unit is 200 watts.
