VXR-9000 FM REPEATER OPERATING MANUAL
REAR PANEL CONNECTORS
Backup Power Source Terminals
If available, a backup 13.6 Volt power source, such
as a rechargeable battery, may be connected here.
When the Battery Charge switch (located on the PA
Unit) is set to “ON,” a “trickle” charge current is
present here while the repeater is operating from
the “Main Power Source.”
Circuit Protection Fuse
Two 15-Amp blade fuses, for the “Main” and
“Backup” power sources, are installed here.
RX Antenna Jack
This BNC-type coaxial jack accepts the receiver in-
put signal, for connection to the receiving antenna,
or the “RX” jack on the duplexer. The input imped-
ance requirement is 50 Ohms.
TX Antenna Jack
This N-type coaxial jack provides the transmitter
output signal, for connection to the transmitting an-
tenna, or the “TX” jack on the duplexer. The output
impedance requirement is 50 Ohms.
Main Power Source Connector
The primary DC power source should be connected
here. The power requirements are 13.6 V DC at 12
Amps, continuous duty.
External Speaker Jack
This 3.5-mm, 2-pin jack provides variable audio
output for an external speaker. The audio output
impedance at this jack is 4 to 16 Ohms, and the level
varies according to the setting of the front panel's
VOL knob.
DSUB 25-pin Accessory Connector
This DB-25F connector allows the repeater to be re-
mote-controlled by an external controller. Analog
I/O signals, such as TX Audio In, Discriminator Out-
put, RSSI, etc. are available. Moreover, the VXR-9000
provides eight ports that can be programmed for
various input or output signals, or for control func-
tions. Each port may be programmed as to its func-
tion, its status (input or output), and its logic (for
output ports only).
6
RX
MAIN
BACKUP
BACKUP
TX
GND
ACC
EXT
INPUT
DC 13.6V
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