8
IMPORTANT NOTE -
There are two typical uses of the RTR-2
MAIN ANT OUT
:
1. When using the RTR-2 to send the transmit antenna received signal to a second receiver only
while the RADIO is listening to the RX ANT.
2. When using the RTR-2
MAIN ANT OUT
to send the transmit antenna received signal to an
external splitter in order to share it between a second receiver or SDR spectrum display and
the
RX ANT IN.
As shown on Figure B, the MAIN ANT OUT has no internal connection to option slots.
See the section
System Connection Diagrams
for details
Warning:
When
RX ANT IN
is used in this manner,
DO NOT
short the
“
BIAS TEE ENABLE
” jumper on RTR-2 PBC.
See section entitled
Internal Jumpers
.
The RTR-2 immediately reverts to
MAIN
ANT transmit mode,
Figure A
,
RADIO
to
MAIN ANT
IN
as soon as:
The transceiver is keyed to transmit, with a ground on transmit on the keying line center
conductor
The keying line is removed from the
RADIO PTT-RX ENABLE
connector
The P
OWER
is turned
Off
The
MAIN ANT
transmit mode cannot occur when the
Exception*
condition exists.
*Exception:
The RTR-2
failsafe
, which requires the installation of a keying cable, can be
disabled
with the
Force Ground
internal jumper.
Force Ground
is provided for RTR-2
applications when
ONLY receive antennas
are used, such as SWL or AM DX operations.
MAIN ANT IN
may also be used for a receive antenna, if RADIO connection to a
transceiver RF output is
NEVER
to be made.
The
Force Ground
internal jumper
disables the failsafe
provided by requirement of the keying cable
connection to
RADIO PTT-RX ENABLE
. See the
Internal Jumpers
section.
WARNING
: When the
Force Ground
jumper is used to disable RTR-2 failsafe, and when unit is in
RX ANT
mode, any RF transmitted into the
RADIO
connector will cause internal
damage, especially to optional Plug-In Modules, and may damage externally connected
receive equipment.
Damage caused by misuse of the “Force Ground” jumper is not covered under warranty.
