Figure 7-8. Vhf (136-162 Mhz) Transmitter And Power Control Schematic Diagram (8486769Z02-A) - Motorola CP150 Service Manual

7-10
0 V (Rx)
R171
TX_ENA
PA_TX_ENA 6.8K
1.8V (Tx)
5T
PA_5T
C109
0.1uF
C100
820 mV (RF)
1500pF
TX_INJ
PA_TX_INJ
R101
18
R100 R102
300 300
C104
NU

Figure 7-8. VHF (136-162 MHz) Transmitter and Power Control Schematic Diagram (8486769Z02-A)

June, 2005
7.5 V
USWB+
PA_USWB+
7.4 V (Rx)
3
0.15 V (Tx)
1
Q171 4 5
Q170
MMBT3904
2 EMB10
R524
10K
3
R158
1.5K
C156
.01uF
2.5 V (Low)
3.0 V (Hi)
8
TP150
1
1
4
U150-1
2.4 V (Hi)
LM2904
1.06 V (Low)
PWR_SET
PA_PWR_SET
R162
10K
C158
1500pF
R110
360
R107
C114 R106 L100 C111 R111
150
1500pF 4.7K 560nH NU
NU
1500 mV (RF)
L103
C102
30nH
0.1uF
4.9 V (Tx)
C103 L101
560nH
1500pF
R105
1.2K 1.5 V (Tx)
C105
3
NU
1
Q100
BFS540
L102
2
100nH
R103
3.3K
C171
2.7pF
R104 C101 C108
51 1500pF 0.1uF
SH100
SHIELD
1
C170
0.1uF
6
2 1
0 V (Rx)
C172 7.25 V (Tx)
1500pF
0 V (Rx)
C157
0.1uF
7.3 V (Tx)
C154
1500pF
C155
0.1uF
R152
100K
1%
R153
C151
100K
1500pF
1%
3 C150
8 6
1500pF
Q150
1 7
5
R157
4
2
5.6K
2 R154
100K
U150-2
1%
LM2904
3 R155
C152 100K
1500pF 1%
C159 R156 C153
1500pF 330 0.47uF
C116
C113 C115
2.5 V (Low) 1500pF 1uF 0.1uF
L110
3.0 V (Hi)
560nH
C110 C112 VR110
4.3V
0.1uF 1500pF
DO NOT MEASURE
2 3
C106
1500pF
1 4
RFIN RFOUT
1100 mV (RF) C117 D120
1000pF
MA4PH261
5
C107
U110
10pF
RA07M1317M_VHF
0 V (Rx)
0.9 V (Tx)
C122
15pF
VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A)
U151
57R01
R151
22
R150
0.1
R120
C120
150
1500pF
R121
150
0 V (Rx)
1.6 V (Tx)
L120 C121
560nH 1500pF
C131 C133 C135
10pF 10pF
2.4pF
C137
200pF
L130 L131 L132
43.67nH 43.67nH
43.67nH
C130 C132 C134 C136
15pF 15pF 13pF 6.2pF
C140
16pF
L121
47nH
RX_OUT
C124 PA_RX_OUT
1500pF
NC
D121
C123
MA4PH261
20pF
C141 L140
22pF
30.54nH
S1
S2
G1
G2
T1
T2
J140
M140
ANTENNA_NUT
1 3
TAB1 TAB3 NC
2 4
TAB2 TAB4 NC
6880309N62-C