7
The
RTR mode
switch is in
Main Ant
momentary or
On
position (not center position)
The keying line cable
is
installed from the transceiver to the
RADIO PTT – RX ENABLE
connector. Even when the RTR-2 is turned
On
the mode LED (
MAIN AT/RXANT/MAIN
ANT
LED) will be dark when no keying cable is connected. This is a reminder to install the
required keying cable.
Figure A
NOTE:
No reception of the RX ANT IN and receive signals through the optional modules is
possible when the keying line is not connected.
Exception*
- See next page.
When the RTR-2 is in the
MAIN ANT
transmit mode, and even when independently jumper
enabled, RTR-2 input DC voltage (+13.8 to +21 Vdc) is NOT fed onto the
RX ANT IN
connector
to operate Active antenna(s) –
See section on
Internal Jumpers
.
Receive Antenna Mode
In
Figure B
, the RTR-2 is in
RX ANT
receive mode, the mode LED turns to BLUE, and the
RADIO
is connected to the optional modules and
RX ANT IN
receive signal. This receive-enabled
condition depends upon all of these items:
A coaxial cable is connected from the transceiver RF output to
RADIO
(or from
transceiver
RX ANT IN
)
The
Power
switch is set to
On
The mode switch is set to the
RX ANT
position
The transceiver amp keying line is connected to
RADIO PTT/RX ENABLE
, shield to
transceiver chassis, center NOT grounded
The properly connected transceiver is NOT in the transmit mode
When the
RTR-2
is in
RX ANT
mode, the receive signals from the
RX ANT
and optional modules
are sent to the transceiver connected to
RADIO
. Also in
RX ANT
mode, these conditions are
enabled, as shown in
Fig B.
The
MAIN ANT IN
signal is connected to the
MAIN ANT OUT
.
When independently jumper enabled, RTR-2 input DC voltage (+13.8 to +21 Vdc) is fed
onto the
RX ANT IN
to operate Active antenna(s)
Figure B
