
4-106
Schematic Diagrams, Overlays, and Parts Lists
: Low Band Section
Software Package
S501 - Freq. switch
4080710Z01 - 16 position
Conventional/MDC
4080710Z02 - continous
5 Tone
IF314
C502
0.47uF
180
R502
IF318
C512
100pF
C511
100pF
10K
R515
RX FRONT END
IF
R5
RX_IN
RX_INJ
M301
R514
47K
IF308
IF306
IF315
IF322
IF312
POS
3
C505
100pF
J1
DATA
2
NEG
1
VR502
6.8V
IF324
M300
PB501
SWITCH
IF300
IF316
IF311
C0
C1
C1
7
GND GND1
9
1
PC0
2
PC1
4
PC2
PC3
8
S501
SWITCH
C0
IF307
IF301
6.8V
IF302
IF305
VR501
RX BACK END
16.8MHz
CE
CLK
DATA
DEMOD
IF
R5
RSSI
Vdd
CR502-2
2
4
3
CR503
2
4
1
3
R501
680
Q510
IF310
IF309
100pF
C514
C513
100pF
.01uF
C500
IF325
6.8V
VR500
IMX1
CR502-1
5
1
6
IF321
IF304
IF303
IF320
PB504
SWITCH
TAB1
6
TAB2
7
2
IF317
S502
4
W
OL
1
5
3
IF323
DEMOD
R5
UNSWB+_2
GREEN_LED
SWB+
RED_LED
_4
_2
BATT_CODE
SB1
PTT
VDD
IF319
RX_IN
RX_INJ
RTA0
RTA3
RTA1
RTA2
VOL
M
16.8MHz
DATA
CLK
LVZIF_SEL
RSSI
Figure 4-79:
Low Band (29.7–42/35–50 MHz) Receiver Main Diagram
Summary of Contents for PR860
Page 1: ...PR860 Two Way Portable Radio Detailed Service Manual ...
Page 2: ......
Page 5: ...iv Notes ...
Page 9: ...viii Table of Contents Notes ...
Page 13: ...Notes xii List of Figures ...
Page 17: ...1 4 Introduction Radio Model Information Notes ...
Page 51: ...2 34 Theory of Operation Voltage Control Oscillators VCO Notes ...
Page 81: ...4 4 Schematic Diagrams Overlays and Parts Lists Flex Layout Notes ...
Page 193: ...4 116 Schematic Diagrams Overlays and Parts Lists Low Band Section Notes ...
Page 196: ......