+9.5VDC
+9.5V OUTPUT
MIC PTT
MIC AUDIO
FRONT PANEL
MIC AUDIO
BALANCED INPUT
SIDE 1
BALANCED INPUT
SIDE 2
CONTROLLER
BOARD
NORM
KEY TX
SW1
KEY TX
P1
Z18
Z4
P1
EXT MIC
+9.5 VDC
Z6
B6
R
FRONT PANEL
N CONNECTO
RF IN
RF OUT
+9.5V
+13.8V
AMPLIFIER MODULE
RF BOARD
RF OUT
OR
B18
P1
TX LED
POWER LED
KEY LOAD*
LH_DATA
SB9600_BUSY
____
ENA
+9.5 VDC
+13.8 VDC
+13.8 VDC
Z2
B2
TO ALL +13.8 V SUPPLY POINTS
MIC CONNECTOR
RJ45 CONNECTOR
J3
AUDIO SUMMING
AMPLIFIER
KEY FAIL*
OPTB+/VPP
CTSOUT*
SB9600_BUSY
LH_DATA
ENABLE
B24
P1
PTT OUT
KEY LOAD*
KEY FAIL*
OPTB+/VPP
CTSOUT*
B18
P1
PTT WTO
EXT PTT*
PROG SWITCH
EMERG
A/B
A0
A1
A2
A3
B22
P1
TX ENC*
D14
P1
CLEAR KEYS 1*(I/P)
B12
P1
TX BANK A*/B
D20
P1
TX CSEL0
D22
P1
TX CSEL1
D24
P1
TX CSEL2
Z12
P1
D16
P1
CLEAR KEYS 2*(I/P)
D26
P1
TX CSEL3
+5.0 V OUT
+5.0 VDC
CONTROLLER / RF BOARDS
INTERFACE BUS
CONTROLLER / RF BOARDS
INTERFACE BUS
20
+9.5V
+9.5 VDC
68K1
1K0
P25 Digital Base Transmitter Instruction Manual
3.3 Digital Base Transmitter Block Diagram
3-3
xT4DBM3
ELECTRONICS
DANIELS
