Motorola ASTRO 25 GTR 8000 Installation And System Connections - Page 15
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25 Pair + 4 Pair Cable Incl w/GTR8000
RX Audio Out
Pair 2
Pin 27 ‐ Pin 2 +
Radio/System
Ground
Pair 7
Pin 7
TX Audio In
Pair 9
Pair 9
Pin 34 + Pin 9 ‐
CTCSS Signal In
Pair 10
Pin 35 + Pin 10 ‐
External PTT In
Low Active
Pair 15
Pin 15
GTR8000
Radio Ground
Spectracom 1118
CTCSS Signal
Delayed PTT
D l
d PTT
CTCSS Signal and 18 KHz Clock
E Lead / PTT
GTR8000 Analog Conventional Simulcast Wiring Detail
RX RF In
TX RF Out
12 VDC +/‐
CTCSS Filter
10 MHz Ref
Spectracom SecureSync
RF
Infrastructure
I f
t
t
J4 Pi 1 G
J4 Pin 1 Ground fm Radio
Antenna/
J4 Pin 2 12 VDC – (Neg)
Duplexer/
J4 Pin 3 12 VDC + (Pos)
Combiner etc..
J4 Pin 5 E Lead/PTT fm MUX
J4 Pin 6 CTCSS Out + (Pos)
J4 Pin 7 CTCSS Out – (Neg)
J4 Pin 9 PTT Out to Radio
Spectracom 1118
J1 DB‐15 Connector
12 VDC
From SecureSync
Power
CTCSS Signals and 18 KHz
Clock Input
d f R di
CTCSS Filter