Figure 9-237.Vhf (136-174 Mhz) Transmitter Schematic Diagram - Motorola HT Series Detailed Service Manual

9-386
CLK_2_PA
DATA_2_PA
CSX_2_PA
UNSW_LPLUS_3_PA
UNSWB_LPLUS_2_PA
2
LM50C
C3566
100pF 5185963A15
VOUT
1
3
GND POS
U3503
C3561
.022uF
C3504
C3503
.022uF
33pF
C3502
L3501
5.6nH
C3505
R3505
330
33pF
> 200mV RMS
300 ~ 500mV RMS
C3501 14
R3502
VD1
330pF
TX_INJ_1_PA
18
16
RFIN
TX_INJ
U3501
11 G2
R3501
R3503
1
300
300 VCNTRL
1.55VDC if VTP 3502 = 4.1VDC
1.44VDC if VTP 3502 = 3.8VDC
R3543
100
Figure 9-237. VHF (136-174 MHz) Transmitter Schematic Diagram
RESET 5V
RESET_1_PA
CSX CLK
C3571
C3570
330pF
470pF
C3560
25
16
GND2 V45
26
15
CLK VG
27 14
U3502
BPOS V10
28 13
R3561 DATA CQX
29
12
12K
CEX CQ
30
11
TEMP Q
31 10
OVI QX
32 9
T1 F168
R3562
R3563
33K
270K
R3564
C3565
330K
.022uF
C3562
R3565
3300pF
L3504
C3563
330K
L3503
68nH
3300pF
NU
68nH
C3506
.022uF
C3516
C3564
220pF 1uF
C3509
330pF
33pF
C3506
C3507
L3502 .022uF
330pF
68nH
NU
NU
NU
C3514
L3511
6 C3512 470pF
RFOUT1 18nH L3513
RFOUT2 7
7.66nH
2 47pF
VG1
C3513
3 L3512 C3517
VG2
2V - 5V
30pF 11.03nH
RMS
100pF
R3541
C3541 C3542
6.8K
330pF
.022uF
NU
R3548
7.5k
C3543
C3544 R3542
330pF 5.6K
.022uF
R3547
12K
C3547
.022uF
TP3502
4.0 - 4.2VDC for 5.5W
3.9 - 4.1VDC for 3W
3.7 - 4.0VDC for 1W
UNSWB+
UNSWB+ UNSWB+
5V_2_PA
R3570
10K
R3569
5.6K
1uF
R3566
0
NU
C3568
C3569
BEAD
3300pF
.022uF
L3519
BEAD
R3519
0.1
C3526
.022uF
C3567
C3515
L3515
3300pF
13.85nH
330pF
C3527 C3528
C3519
9.1pF
1.5pF
22pF
C3518
330pF C3525
L3518 L3521
R3513
MICROSTRIP L3522
39nH
7.66nH 23.75nH
100
10pF
R3512 D
C3521 C3524
Q3501 C3523
120
220pF
120pF 18pF
3VDC for 5.5W
2.8VDC for 1W
G
S
H3501
HEATSINK
R3544 R3545
100
100
R3546
C3546
33K
330pF
SH3501 SH3502
SHIELD SHIELD SHIELD SHIELD
2
1 2 3 1
Q3561
R3571
120
R3572
120
R3573
120
L3523
1uH
C3533 C3534
7.5pF 4.7pF
Tx: 1.6VDC
J3501
C3532
RF_JACK
68pF
D3521
L3531 L3532
1
43.67nH 43.67nH
2
C3531
C3536
3
C3535
20pF
15pF
27pF
C3537
J3502
18pF
ANTENNA_NUT
2
TAB2
1 TAB1
L3538
C3539
30.54nH 5.6pF
L3551
43.67nH
RX_IN_1_PA
R3551
Tx: 0.8VDC
39
C3550
C3552
D3551
7.5pF
56pF
C3551
68pF L3552
7.66nH
ZWG0130021-D
VHF Circuit Board/Schematic Diagrams and Parts List
GND
4
4
TAB4
TAB3
3
RX_IN