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Motorola HT Series User Manual

Motorola HT Series
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Controller Circuit Board/Schematic Diagrams and Parts List 9-19
Figure 9-15. Controller Audio Power Amplifier Schematic Diagram
J403-2
J403-1
J403-3
J403-12
J403-19
J403-16
J403-18
J403-13
J403-8
J403-9
J403-15
J403-14
J403-17
J403-20
J403-7
J403-5
J403-6
J403-4
J403-10
J403-11
GND
INT_SPK+
INT_SPK-
EXT_SPK+
EXT_SPK-
OPT_B+
EXT_MIC
OPT_SEL_2
OPT_SEL_1
GND
RX_DATA
TX_DATA
GND
RSSI
RX_AUDIO/TX_AUDIO
BOOT_CTRL
NC
MIC
GND
GND
VR445
10.0V
10.0V
VR446
VR447
10.0V 10.0V
VR448
VR449
10.0V
J403
20 PIN CONNECTOR
68
R450
C471
100pF
C472
100pF
C473
100pF
SWB+
OPT_SEL2
OPT_SEL1
VR434
6.8V
100pF
C493
100pF
C490
100pF
C492
100pF
C491
5.6V
VR433
C497
100pF
100pF
C496
C495
100pF
C494
100pF
5.6V
VR432
FLAT_RX_SND
SCI_RX
SCI_TX
RSSI
BOOT_CTRL
C441
100pF
L400
390nH
R421
2K
INT_MIC
2K
R435
C444
*
100pF
R436
0
C440
4.7uF
R477
1K
100pF
C445
390nH
L401
C443
0.1uF
EXT_MIC
C442
0.1uF
10
R473
10uF
C475
UNSWB+
A
UDIO
0.1uF
C447
3.6K
R472
0.1uF
C448
36K
R424
R431
470K
VCC1 VCC2
OUT1NEG
OUT1POS
OUT2NEG
OUT2POS
SELECT
SVR
IN1NEG
IN1POS
IN2NEG
IN2POS
MODE
NC2
NC3
NC4
NC5
NC1
GND1
GND2
6
5
17
16
14
15
4
R423
47K
U420
TDA8547
20 11
7
9
12
19
18
3
13
8
2
1
10
10uF
C476
SWB+
R471
5.6K
Q410
46
132
AUDIO_PA_ENA
EXT_SPKR_SEL
Vdda
R434
330 Ohm
5V
0.1uF
C450
VR450
10.0V
*
NOTE: FOR VHF RADIOS, C444 HAS A VALUE OF 4.7uF.
FL0830721O

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Motorola HT Series Specifications

General IconGeneral
BrandMotorola
ModelHT Series
CategoryTwo-Way Radio
LanguageEnglish

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