Schematics, Board Overlays, and Parts Lists – VHF
: Transceiver (RF) Section
8-9
6871620L01-C
May 28, 2008
Figure 8-8. VHF Transceiver (RF) Transmitter Circuit
NU
NU
47K
C114
13pF
910pF
C104
910pF
C127
C108
C122
.01uF
910pF
C128
27pF
1.65nH
TEST_POINT
TP111
1
L107
C125
470pF
27pF
C120
BLM21PG221SN1
E101
470pF
C119
R109
C103
.01uF
R119
0
2
S
4
V5A
23.75nH
L105
Q107
4816698H02
D
3
G
1
1
S
2
C134
.01uF
910pF
V5A
V5A
C
N
C105
R117
NTR1P02T1
Q104
NC
10
33nH
L103
RAWB+
C111
910pF
C110
XB+
470pF
NC
C102
56pF
0.1uF
C116
C117
1uF
R106
NC
TX5V
1uH
RAWB+
C
N
L102
11.03nH
30pF
C113
L104
L106
C
N
22nH
R111
470K
C131
.015uF
910pF
C137
1
4
27pF
C121
Q101
2
5
6
3
0.1uF
C132
18pF
C124
RAWB+
6
RFOUT1
7
RFOUT2
1
VCNTRL
14
VD1
2
VG1
3
VG2
5
2
D
N
G
2
1
3
D
N
G
3
1
4
D
N
G
8
NC1
9
NC2
10
NC3
NC4
15
16
RFIN
U102
SRFIC5668
P
E
7
1
G2
11
4
1
D
N
G
5.1pF
C107
C112
NC
910pF
6.8nH
L101
K2 6
NC1
2
NC2
5
C
N
RT150
33.0K
MBD330DWT1
D104
A1
1
A2
4
K1
3
910pF
C101
10K
R105
23.75nH
L108
C133
1uF
7.5pF
C123
C144
910pF
R121
390
C
N
RAWB+
0
C130
470pF
R118
R136
24
VAR3
G
V
5
1
6
VL
19
VLIM
0
R135
23
RX
T1
2
0
3
P
M
E
T
0
1
V
4
1
5
4
V
6
1
17
V5EXT
20
VAR1
VAR2
18
5
2
2
D
N
G
INT
4
22
NA
Q
1
1
X
Q
0
1
1
RFIN
21
RS
T
E
S
R
1
3
5
CJ
CL
7
6
2
K
L
C
Q
C
2
1
3
1
X
Q
C
8
2
A
T
A
D
9
8
6
1
F
GND1
8
5185765B26
H99S4
U104
O
N
A
2
3
7
2
S
O
P
B
9
2
X
E
C
CI
3
C129
E105
1500pF
U103
3
S
O
P
D
N
G
1
2
VOUT
0.15
R130
LM50
NC
C140
910pF
R102
1K
C106
910pF
NC
.01uF
C118
TX5V
BLM11A601S
E104
C135
910pF
82pF
C115
Q102
R120
1K
C136
910pF
TVDD
Vc
R122
110
TX5V
RAWB+
RXH
POUT
POUT
V5A
VAR2
MOSI
USEL
SPCK
RSTL
VAR3
XB+
TXRF
Summary of Contents for ASTRO XTSTM 4000
Page 1: ...COLOR CHORDS 7 ASTRO XTSTM 4000 Portable Radio Detailed Service Manual ...
Page 2: ......
Page 16: ...May 28 2008 6871620L01 C xiv Commercial Warranty Notes ...
Page 22: ...May 28 2008 6871620L01 C 1 6 Introduction Notes ...
Page 26: ...May 28 2008 6871620L01 C 2 4 Radio Power Notes ...
Page 56: ...May 28 2008 6871620L01 C 3 30 Theory of Operation Notes ...
Page 100: ...May 28 2008 6871620L01 C 6 8 Troubleshooting Waveforms Notes ...
Page 194: ...May 28 2008 6871620L01 C B 2 Motorola Service Centers Notes ...
Page 204: ...May 28 2008 6871620L01 C Glossary 10 Glossary Notes ...
Page 209: ......