Figure 4-25: Uhf (403-470 Mhz) Transmitter Schematic Diagram - Motorola PR860 Detailed Service Manual

Schematic Diagrams, Overlays, and Parts Lists: UHF Band 1 Section
UNSWB+
C109
L106
100pF
7.66nH
X_OUT
C111
11pF
E101
R102
BEAD
0.075
L107 C114
C123
33.47nH 100pF
10uF
C172
0.1uF
Microstrip Microstrip
R172
1
200
Q110
R175
6.2
Microstrip
2
C112
C113
47pF 10pF
3
R103
C115 C116
R176 43
30pF 33pF
6.2
TX_INJ
H101
HEATSINK
1
POS
C295
100pF
R111
20
SH101
R110
SHIELD 300
1
R174
PA SHIELD
C119
NU
100pF R120
43K
C171
R173
100pF
180K
ZMY0130018-F
R106
10
C121 C160
L109
L108
100pF 100pF
22nH
4.22nH 0
C118
100pF
C117 C120 L160
30pF NU 15.0nH
R107 C151 C150
TX_INJ_1
NU 100pF .022uF
R161
200
if
C125 C161
R112
0.1uF
300 100pF
R104
47K
C165
L113
100pF
5.6nH
C127
C169
1000pF
5.6pF
C129
7.5pF
R171
C166
43K
100pF
R109
200K
C133
1000pF
L115
390nH
R136
1MEG
UNSWB+
L112
C130 C128
100pF .022uF
R108
5.6K
C152
ANT_BIAS
.022uF
GND4
13
GND3
U101
12
GND2
C65
5
CLK
GND1
4
UNSWB+
C105
DATA
100pF
CSX
C122
100pF
L114 C174
100pF
390nH
R133
UNSWB+
NU
R132
C131
270K
.022uF
1
24
RFIN VAR3
2
23
T1 RX
3
22
CI NA
4
21
U102
INT RS
5
20
CJ H99S VAR1
6
19
VL VLIM
7
18
CL VAR2
C135 8
17
GND1 V5EXT
.022uF
C134
C138 C126
100pF 0.1uF
3300pF
VOUT
3
GND
Figure 4-25: UHF (403–470 MHz) Transmitter Schematic Diagram
4-27
UNSWB+
CR103
1 3
2
Q111
4 3
C132
100pF
2
6 1
TX_BIAS
RESET
C110
100pF
5V
C170
100pF
CR105
C173
LM50
.022uF
R130
10K
2
R131
18K