Filter
Top Products
February 2001
Part No. 001-9800-001
6-33
R144
1k
R139
47k
R377
4.7k
C365
.1
36
52
24
5
22
23
6
37
33
39
38
40
42
R128
1k
C302
.0012
C300
.0012
R315
100k
C306
.01
R339
10k
R347
10k
R302
620
R123
47k
UNSW BAT
SOURCE
15
C361
.1
C360
.1
C359
.1
C58
.1
C357
.1
C356
.1
C355
.1
W301
R362 [5]
W302
W303 W313
W312
W311
W304 W314
W305
W315
W316
W306
R364 [5]
R366 [5]
R363 [5]
8V
11
25/12.5 kHz
RX OUT 2
RX IN 2
TX OUT 2
TX OUT 1
RX IN 1
RX OUT 1
PTT
TRANSMIT
IN 3
IN 2
8V8V
OUTPUT A DRIVEROUTPUT B DRIVER
8V
Synth Strobe
Tx On
Temp
Serial Clock
Lock Detect
RSSI
Serial Data
RF Strobe
Transmit
BW Sw
Tx Data Enable
Tx Data
Test
Write Enable
TO DATA
MODEM
RSSI
8V In
Q106
3616
Q105
3657
Q104
3616
Q103
3657
Q303
3616
260mV P-P
[b]
C364
470
R124
10k
R122
10k
R143
2.7k
C110
.01
R168
3.40k
R161
24.3k
R159
10k
R160
10k
C109
470pF
R138
10k
R131
10k
R129
10k
R389
82k
R392
330k
35
36
41
62
60
65
59
61
63
66
Sw Bat
VCC
CR103
5.6V
VCC
CR104
5.6V
64
42
CR116
5.6V
VCC
CR107
5.6V
R140
47k
VCC
40
CR112
5.6V
R151
470
R148
10k
VCC
28
R149
10k
CR111
5.6V
R152
470
29
R157
47k
R155
10k
R147
47k
U103C
MC74HC32
U103D
MC74HC32
U103B
MC74HC32
U103A
MC74HC32
CR106
Y100
9.830 MHz
R108
680k
C102
22pF
C103
22pF
32
7
6
19
3
CR119
5.6V
R164
10k
R162
10k
CR304
R422
1k
CR303
18V
C101
470pF
R106
4.7k
R104
47k
Q101
3658
R102
10k
C363
.1
CR100
18V
R103
1k
R421
10k
C106
.22
R119
47k
U100
33164
2
4
R109
47k
Q102
3658
R105
10k
LOW VOLTAGE SENSE
1
VCC
VCC
INPUT
GND
RESET
1
2
4
5
12
13
8
10
9
11
6
3
30
31
33
2
17
XIRO
VRH
VRL
RESET
MODB/VSTBY
MODA/LIR
IRQ
EXTAL
XTAL
PD4/SCK
PD3/MOSI
PD2/MISO
PD1/TXD
PDO/RXD
PA2/IC1
PA0/IC3
PE6/AN6
PA7/OC1/PA1
PA6/OC1/OC2
PA1/IC2
PE5/AN5
PE4/AN4
PE3/AN3
PE0/AN0
PE1/AN1
PE2/AN2
PE7/AN7
PD5/SS
R115
10k
R120
4.7k
C105
.1
67
68
18
U101
68HC11
MICROCONTROLLER
U104C
74HC00
U104B
74HC00
R134
47k
R117
47k
R133
47k
R135
47k
R125
47k
24
25
26
20
4
5
21
43
44
45
46
47
48
49
50
8
9
10
11
12
13
14
15
8
7
6
5
4
3
2
1
0
7
6
53
54
55
56
57
58
51
52
16
15
14
13
12
11
10
9
23
22
5
4
3
2
1
0
PG5/CS101
PC0/D0
PG4CS102
PC1/D1
PC2/D2
PC3/D3
PC4D4
PC5/D6
PC6/D6
PC7/D7
PF0/A0
PF1/A1
PF2/A2
PF3/A3
PF4/A4
PF5/A5
PF6/A6
PF7/A7
PBO/A8
PB1/A7
PB2A10
PB3A11
PB4/A12
PB5/A13
PB6/A14
PB7/A15
PG6/CSGEN
R/W
E
PG7/CSPRG
PG3
PG2
PG1
3
2
1
6
4
R107
47k
R130
47k
10
9
8
9
10
4
5
6
W103
W100
W101
W102
R127
10k
U104A
74HC00
U104D
74HC00
2-INPUT MUX
U109
75HC157
A1
B1
A2
B2
A3
B3
A4
B4
Y4
Y3
Y2
Y1
SLCT
1
2
3
5
6
11
10
4
7
9
12
13
14
OE
26
23
25
4
22
24
31
2
3
29
28
VCC
27
PG0
VCC
VCC
15
3
11
13
12
2
1
+
U303B
MC3303
R414
4.7k
R410
6.8k
R408
150k
C349
.047
R406
620
C348
4.7
R401
620
R402
330k
CR128
+
C354
4.7
D7
D6
D5
D4
D3
D2
D1
D0
OC
CLK
12
13
14
15
16
17
18
19
U112
74HC574
CLK
OC
D0
19
18
17
37
36
50
D1
D2
D3
D4
16
15
14
13
10
47
43
46
D5
D6
7
12
6
5
4
3
2
1
0
Q0
1
2
3
4
5
6
7
8
9
11
Q1
Q2
Q3
Q4
Q5
Q6
Q7
D7
CLK
OC
D0
44
39
D1
D2
D3
D4
49
42
38
48
D5
D6
D7
19
18
17
16
15
14
13
12
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
41
CR101
5.6V
OCTAL LATCH
U111
74HC574
U110
74HC574
OCTAL LATCH
R300
6.8k
R314
100k
C301
.01
8V
+
U106
74HC138
U108
AT29010
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
8V
8V
1 of 8 DECODER
G2A
G1
A
B
C
12
13
14
Y1
Y2
Y3
6
5
7
43
30
34
44
52
45
33
15
25
28
46
47
35
33
R121
10k
18
29
19
39
16
32
Mic Mute
Mic
Audio
Tx Filter
Output B
Transmit
Output A
PTT
IN 3
IN 2
Volume Control
Speaker Mute
Rx Mute
Rx Filter
Tones
Rx Audio
BW Sw
Rx Data
25/12.5 kHz
In 3
Temp
RSSI
Lock Detect
Pwr Sw Sense
Ign Sw Sense
Rx Data
Tones
Squelch
In 2
PTT
Serv Req
RxD
TxD
Display Strobe
Dis Ser Data In
Display Clock
Dis Ser Data Out
Serial Data
Serial Clock
Ext Serv Req
Prog 1
2
3
5
6
7
8
9
10
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Prog 2
VCC
R137
470
R136
10k
CR105
5.6V
VCC
Tx Data
1
2
3
4
5
6
7
8
9
11
1
2
3
4
5
6
7
8
9
11
7
6
5
4
3
2
1
0
12
11
10
9
8
7
6
5
27
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
CE
OE
WE
NC2/A13
A15
A14
A13
128K X 8 FLASH ROM
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
8
9
10
11
12
IO0
IO1
IO2
IO3
IO4
IO5
IO6
IO7
13
14
15
17
18
19
20
21
OCTAL LATCH
VCC
Transmit
38
37
39
PA3/OC1/OC5
PA5/OC1/OC3
PA4/OC1/OC4
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
13 14 15
VCC
R116
47k
VCC
VCC
R114
0
R110
1M
CE1
OE
WE
27
22
20
1
NC
Not Used
14
R126 1M
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
CE2
2
26
23
21
24
25
3
4
5
6
7
8
9
10
0
1
2
3
4
5
6
7
8
9
10
11
12
Not Used
HOLD
WP
CS
S0
SI
SCK
R153
10k
R141
10k
VCC
Strobe
2
5
6
1
3
7
U102
X25320
4K X 8 EEPROM
(HIGH TIER ONLY)
R142
10k
VCC
4
U107
AT3864
8K X 8 RAM
(HIGH TIER ONLY)
OUTPUT E
OUTPUT F
4
IO1
IO2
IO3
IO0
IO4
IO5
IO6
IO7
19
18
17
16
15
11
13
12
R156
470
R150
470
R158
470
CR109
5.6V
CR113
5.6V
CR115
5.6V
R197
10k
+
U304A
LM2904
R305
390k
R301
4.7k
C303
.01
R307
5.6k
R318
10k
CR300
R306
180k
C304
.033
+
U304B
LM2904
C318
.01
+
U300C
MC3303
R319
330k
C310
.0022
C307
.0033
R313
47k
R312
47k
+
U300B
MC3303
C308
.01
R322
10k
C305
.1
+
U301B
MC3303
R327
33k
U307B
MC14066
R332
47k
R350
5.6k
R357
0
C314
.01
R341
47k
C311
820pF
R334
390k
+
U301C
MC3303
C312
.039
R343
27k
C317
.01
R344
560k
C313
.01
R325
5.6k
R348
150k
C324
4.7
R351
1k
R361
C329
.047
R424
1k
R310
150k
R416
10k
R417
27k
R340
47k
C316
.0018
+
C322
4.7
[4]
[4]
R349
1.5k
R323
62k
R328
62k
R330
62k
R333
62k
R336
62k
R338
62k
R345
62k
R320
62k
R324
33k
R326
33k
R329
33k
R331
33k
R335
33k
R337
33k
U305
MC14094
4
5
6
7
14
13
12
15
Q1
Q0
Q2
Q3
Q4
Q5
Q6
3
2
1
Q7
CLK
DATA
STR
OE
SHIFT REGISTER
(D/A CONVERTER)
R346
62k
R342
33k
11
R101
47k
R100
1k
R193
4.7k
C100
.01
Q100
6114
CR110
5.6V
1
2
3
4
5
6
R154
470
R166
10k
R172
22k
R170
4.7k
R174
4.7k
CR121
CR122
18V
UNSW
BAT
[3]
VCC
R165
47k
R167
47k
R171
10k
CR118
R175
4.7k
R176
10k
CR120
R169
22k
+
U300D
MC3303
R308
150k
R316
47k
U307D
MC14066
CR301
CR302
R317
27k
R303
100k
CR301
+
U300A
MC3303
R304
10k
R311
20k
+
C309
4.7
+
U301D
MC3303
+
C315
4.7
R354
0
C325
.047
U307C
MC14066
R355
100k
+
U301A
MC3303
R353
18k
C320
680pF
R359
4.7k
+
C328
1
VREF
C321
.047
R358
4.7k
8V
R419
10k
VCC
[5]
R360
470
C330
.1
R418
10k
VCC
CONT
INPUT
VCC
C327
.1
+
C326
220
SW BAT
+
C319
1
OUT+
OUT –
GND
R352
820k
C323
.047
1
2
External
Speaker Jack
J303
Spkr (–)
Spkr (+)
To Internal
Speaker
OPTION 1 OPTION 2
U306
TDA7856
J101
18
10
VREF
3
2
1
BANDPASS FILTER
SQUELCH
6
5
VCC
51
45
49
20
21
48
31
5
6
50
17
Power Sw
Power Hold
Pwr Sw Sense
Ign Sw Sense
Horn Honk
Output D
Sw Bat Out
Ser Clock
Ser Data
Sq Strobe
Squelch
COMPARATOR
VCC 8V
VCC
Sw Bat Out
Ign Sense
Output D
Spkr Out
Horn Honk
IGN SW
SENSE
PWR SW
SENSE
LOW-PASS FILTER
RECEIVE DATA
LOW-PASS FILTER
DATA DETECTOR
POWER HOLD
From Power Switch
On-Off Control
POWER ON-OFF
CONTROL
5
20
J302
To RF Bd J201
6
5
7
BANDWIDTH
SELECT
25/12.5 kHz
RECEIVE AUDIO
HIGH-PASS FILTER (<300 Hz)/DE-EMPHASIS
6
5
7
10
9
8
13
12
14
8V
RX AUDIO
MUTE GATE
2
3
13
2
574
6
8
AUDIO AMP
TO RF
BOARD
R427
820k
VCC
TO
ACCESSORY
CABLE
HORN SW
R111
10k
S
D
3
2
1
11
12
13
14
10
12
9
10
8
5
34
+
89
6
Rx Audio In
Q111
3616
Q108
3658
Q107
3657
Q110
3658
Q109
3658
Q301
3616
Q302
3616
Q300
3658
0V DC (9RF, UNSQ)
1.4V DC (NO RF, SQ)
[a]
15mV rms (RF)
15V rms (NO RF)
[a]
6.6V DC (RF, UNSQ)
0V DC (NO RF, SQ)
[a]
140mV P-P
[b]
280mV P-P
[b]
2.8V DC
[b]
900mV P-P [b]
4.5V DC
0v
[b]
500mV rms
[c]
800mV rms
[c]
800mV rms
[c]
160mV rms
[c]
2.8V DC
[b]
8V
R356
180k
R426
7.5k
CR129
5.6V
R173
22k
SPLATTER FILTER
R385
4.7k
U308D
MC14066
R386
27k
R395
27k
R390
100k
R391
100k
C343
.01
C340
.01
+
U302D
MC3303
R425
4.7k
U307A
MC14066
U308B
MC14066
+
U303D
MC3303
+
U303C
MC3303
C350
.01
C351
.01
R411
22k
R412
1k
R420
10k
R407
10k
R398
0 [4]
C346
.22
C347
.01
R404
120k
R384
4.7k
R145
10k
12
13
14
21
13
11
12
10
R387
47k
R388
47k
C342
.0033
R393
330k
C344
.0022
R397
10k
R415
10k
C352
.22
VREF
SOURCE
R409
10k
VREF
VREF
R405
10k
C345
470pF
8V
R132
10k
R413
1k
C353
.22
R383
0
C333
.0068
[5]
R369
5.6k
+
U303A
MC3303
R365
470k
R382
4.7k
R379
6.8k
+
C339
4.7
8V
R370
470
R378
470
+
C334
4.7
R367
470k
R371
39k
R372
82k
C336
560pF
+
U302B
MC3303
R380
1k
R373
3.3k
C337
.047
R374
68k
R375
150k
C338
56pF
+
U302C
MC3303
+
C335
4.7
+
U302A
MC3303
U308C
MC14066
C341
.1
R394
10k
R112
10k
9
20
16
19
14
13
11
7
6
1
R113
10k
12
U308A
MC14066
R403
20k
VREF
C332
.0047
8
4
3
17
5
SW BAT
SOURCE
2
W307
W317
W308
W309
W310 W320
W319
W318
R368 [5]
8V
8V
VCC
8V
C331
.0033
4
10
6
8
7
16
18
17
2
14
19
15
13
3
9
1
12
TX IN 2
OUTPUT A
TX IN 1
9
10
8
MIC AMPLIFIER
HIGH-PASS FILTER >300 Hz
MIC AUDIO
GATE
AMPLIFIER
4
5
313
12
14
2
13
1
25/12.5 kHz
25/12.5 kHz
PRE-EMPHASIS/
LIMITER
2
3
15
6
710
9
8
98
6
1
2
3
LOW-PASS FILTER <140/211 Hz
TRANSMIT DATA
TEST GATE
BANDWIDTH SELECT
DATA
GATE
VCC
Synth Strobe
Tx On
Temp
Serial Clock
Lock Detect
RSSI
Serial Data
RF Strobe
Transmit
TRANSMIT
AUDIO
R376 [5]
OUTPUT B
Unsw Bat In
Sw Bat In
Tx Wideband Data Out
Tx Audio Out
R381
1k
R400
20k
R399
0 [4]
Tx Data Out
Q305
3616
Q307
3616
Q306
3658
Q304
3616
Q308
3616
650mV rms
[d]
650mV rms
[d]
650mV rms
[d]
[d]
0V
6.3V
925mV P-P
SINEWAVE
[e]
650mV P-P
[e]
[e]
2.5V DC
20mV P-P
4.4V P-P
[d]
3.7V P-P
[d]
3.6V DC
19
15
18
17
16
13
F100
2.0A
12
11
7
6
1
2
3
4
5
10
CR123
18V
Sw Bat
14
+
C112
10
C115
.1
C114
.1
C116
.1
5V REGULATOR
SW BAT
VCC
SOURCE
U105
MC78M05
1
2
3
VIN VOUT
GND
+
C111
10
C117
.1
C118
.1
C119
.1
C120
.1
C121
.1
C104
.1
C107
.1
C108
.1
C362
.1
R177
100
11
10
9
8
7
6
5
4
3
2
1
R321
470
R146
470
CR108
5.6V
F300
0.6A
12
13
C113
.1
8V
Sw Bat
Rx Filt Out
TxD
Tx Filt In
RxD
Transmit
IN 2
Ext Serv Req
Option 1
Output C
Pwr Sw
8V Out
Gnd
Sw Bat Out
Rx Filt Out
Tx Filter In
TxD
RxD
Transmit
IN 2
Ext Serv Req
Option 1
Output C
Reset
TxD
Rx Audio Out
Power Sw
PTT/Prog1
Serv RQST
Mic Audio In
RxD
Reset Out
GND
SPKR (-)
8 2851131214 215
30
40 411 32 3163313123435
SPKR (+)
CR114
29
Dis Clock Out
RxD
Mic Audio
Serv RQST
PTT
Rx Audio Out
Power Sw
TxD
J100
To
Interface
Board
ALL RESISTORS ARE IN OHMS AND ALL CAPACITORS ARE IN
MICROFARADS UNLESS OTHERWISE SPECIFIED.
SEE TABLE 1 FOR IC CONNECTIONS NOT SHOWN.
R170 IS REMOVED WHEN EXTERNAL IGNITION SENSE IS USED.
STD CONFIG = R361/R398 OUT, R357/R399 IN.
DATA MODEM INSTALLED:
JUMPERS R357/R399 IN, R361/R398 OUT
NO OPTIONS: JUMPERS R383/R354 INSTALLED
OPTION 1 ONLY: JUMPERS R366/R362 INSTALLED
OPTION 2 ONLY: JUMPERS R376/R364 INSTALLED
OPTIONS 1 AND 2: JUMPERS R368/R363 INSTALLED
1.
2.
[3]
[4]
[5]
NOTES:
J301
SPKR (+)
SPKR (-)
Dis Clock Out
Dis Ser Data Out
Vol Wiper
Dis Ser Data In
Dis Ser Data In
Dis Ser Data Out
Vol Wiper
GND
26
9
7
27
Sw Bat Out
Prog 1
31
Sw Bat Out
20
GND
J3
20
19
18
17
16
15
14
8
9
13
12
11
10
9
8
7
6
5
4
3
2
1
R118
470
R423
4.7k
CR102
5.6V
VCC
CR305
J305
IC SUPPLY GROUND
U101
U102
U103
U104
U106
U107
U108
U109
U110
U111
U112
U300
U301
U302
U303
U305
U307
U308
U309
34 (5V)
8 (5V)
14 (5V)
14 (5V)
16 (5V)
28 (5V)
32 (5V)
16 (5V)
20 (5V)
20 (5V)
20 (5V)
4 (8V)
4 (8V)
4 (8V)
4 (8V)
16 (5V)
14 (5V)
14 (5V)
16 (5V)
1
4
7
7
8
14
16
8
10
10
10
11
11
11
11
8
7
7
8
Reset
1
R428
51
W322
W323
W321
CR306
3.3V
RT301
10k
Troubleshooting Test Conditions
[a] Squelch voltages measured in test mode
with Group 1 selected. No signal and a –47
dBm (1 mV) unmodulated signal are injected
at antenna jack.
[b] Receive data voltages measured in test
mode with Group 1 selected. A –47 dBm (1
mV) signal, modulated with 150 Hz at 800
Hz deviation, is injected at antenna jack.
[c]Receive audio voltages measured in test
mode with Group 1 and narrowband mode
selected. A –47 dBm (1 mV) signal, modu-
lated with 1 kHz at 1.5 kHz deviation, is
injected at antenna jack.
[d] Transmit audio voltages are measured with
1 kHz, 100 mV rms signal injected at pin 2 of
microphone jack.
[e] Transmit data voltages measure in test
mode with Group 2 selected.
AUDIO/LOGIC BOARD SCHEMATIC