Figure 4-61: Vhf (136-174 Mhz) Transmitter Schematic Diagram - Motorola PR860 Detailed Service Manual

4-80
CLK_2_PA
DATA_2_PA
CSX_2_PA
UNSWB_LPLUS_2_PA
C3566
100pF
GND
3
U3503
C3501
R3502
330pF
TX_INJ_1_PA 18
TX_INJ
R3501
R3503
300 300
Figure 4-61: VHF (136–174 MHz) Transmitter Schematic Diagram
UNSWB+
CSX DATA CLK
RESET_1_PA
BIAS_TUNING
C3570
330pF
UNSW_LPLUS_3_PA
GND2
25
CLK
26
BPOS
27
R3561 DATA
28
12K CEX
29
TEMP
30
RSET
LM50C
31
5185963A15 ANO
32
POS
C3561
R3562 R3563
.022uF
33K 270K
R3564
330K
C3562
3300pF
L3503
C3504
68nH
.022uF
L3504
C3508 C3509
C3503
68nH .022uF 330pF
33pF
L3501
5.6nH
C3502
33pF
R3505
C3505
470
330pF
16 6
RFIN RFOUT1
1 7
L3511
VCNTRL RFOUT2
18nH
14 2
VD1 VG1
3
11
G2 VG2
C3512
47pF
U3501
L3512
8 C3513
NC1 C65
11.03nH
30pF
9
NC2
10
NC3
15
NC4
R3541
C3541 C3542
6.8K
.022uF 330pF
NU
R3543
100
C3543 R3542
C3544
.022uF 5.6K
330pF
TP3502
RESET 5V
UNSWB+ UNSWB+
5V_2_PA
C3571
470pF
C3560
1uF
V45
16
VG
15
V10
14
CQX
U3502 13
CQ
12
H99S-4
Q
11
QX
10
F168
9
C3565
R3566
.022uF 0
C3568
3300pF
L3519
BEAD
R3565
C3563
330K
3300pF
R3519
NU
0.1
C3564 C3567 C3516 C3515 L3515
220pF 330pF 3300pF 13.85nH
1uF
C3519
22pF
120 L3521
R3513
R3512 7.66nH
100 Microstrio
L3518
C3518
39nH
330pF
D
220pF
C3521
R3506
0
G
L3513
C3514
R3507
7.66nH
S
470pF Q3501
0
H3501
C3517
100pF HEATSINK
BIAS_TUNING
1
R3548 R3544 R3545
7.5K 100
100
SH3501
SHIELD
R3547
12K
C3547 C3546 R3546
.022uF 330pF 33K
Schematic Diagrams, Overlays, and Parts Lists: VHF Band Section
UNSWB+
R3570
10K
NU
Q3561
NU
R3569
5.6K
NU
R3571
120
NU
C3569
R3572
.022uF
120
R3573
120
C3526
.022uF L3523
1uH
VR3501
10V
NU
C3528
C3527
1.5pF 9.1pF
C3532
D3521
68pF
L3522
C3525
23.75nH
43.67nH
10pF
C3523 C3531
C3524
120pF 20pF
18pF
L3551
43.67nH
C3550
SH3502
D3551
7.5pF
SHIELD
C3533 C3534
7.5pF 4.7pF
RF_JACK
J3501
L3532 1
L3531
43.67nH
GND
2 4
C3535 C3536
27pF 15pF
3
J3502
C3537
ANTENNA_NUT
18pF
TAB5
5
TAB2 TAB4
2 4
TAB1 TAB3
1 3
L3538
30.54nH
C3539
5.6pF
R3551
39 RX_IN_1_PA
RX_IN
C3552
56pF
C3551
L3552
68pF
7.66nH