Motorola MTH500 Service Manual page 118

SCHEMATIC DIAGRAMS - MTH500 Receiver Block (Sheet 1 of 2)
MTH500 Receiver Block (Sheet 1 of 2)
CPGITR
ADAPT
PRSCIN
TETRA_RX_LO
FL500
DG0106A01
2
RX_TETRA IN
3
IN_GND OUT_GND
D500
L932
39n
V3
V3
5V_RF+
5V_RF+
2.775V_RF
L525
22n
2.775V_RF
C500
VREF1_2.775V
270.p
VREF1_2.775V
GND
6 - 16
C522
100.p
C576
270p
6
OUT
7
L530
47n
U500
RF2361
1
RFIN
4
RF0UT
3
VPD
R500
1.K
C514
C553 C505
270.p
100.0n 1n
2.775V_RF
Q504
10K
10K
10K
10K
2.775V_WPIC
C510
270.p
RX Front End Shield
L505
should be 75n
68.n
2.775V_RF
E500
R943
L500
BLM10B601SDP
560
22n
C550
C507
C984
1.n
C532 1.n 470.p
6.8p
R580
220.
C521
R519
FL501
3.6p
0
380MHZ-BPF
8 4
IN OUT
C1048 N/U
270.p L518
R517
R965
33n
470
270.
GPO5/DCLICP
C590
270.p
N/U
SH501
SHIELD
1
E501
BLM10B601SDP
L508 C551 C512
56.n 1.n 270.p
U504
CMY211
Pins crossed for better routing
1
RF_IF
3
LO_IN
6
IF_RF L512
12.n
C528
8.2p
C531
C525 4.7n
12.p
L513
N/U C524
12.n
R945 1.8p
470
Enviorement Temp. Sens.
RF_TEMP
C574 RT500
270.p 47K
1
2
3
2.775V_RF
C513
1.n
Q500
10K
10K
10K
10K
4
FL502
L504
98A02
470.n
1 4
IN OUT
5
C539
1.8p
6
68P02963C70-O