Parts List

A
A
B
B
C
C
D
D
E
E
F
F
G
G
H
H
I
I
J
J
K
K
L
L
M
M
N
N
O
O
P
P
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
1 1
0 0
DANIELS
ELECTRONICS LTD.
TM
JU32 N7
JU33 N7
JU34 N7
JU35 N8
JU36 E3
JU37 P8
JU38 F7
JU39 B8
JU40 C2
JU42 M6
JU43 M7
JU44 L7
P1-1 A4
P1-2 A4
P1-3 A3
P1-4 A5
P2-1 A6
P2-2 G7
P2-3 A5
P2-4 A5
P3-1 O7
P3-2 D9
P3-3 A5
P3-4 A9
P4-1 A7
R47 B8
R48 E6
R49 F6
R50 G6
R51 H6
R52 H7
R53 O8
R54 P8
R55 K8
R71 G3
R72 C8
R73 C8
R74 C7
R75 C7
R76 D8
R77 K6
R79 K7
R80 G3
R81 G2
R84 J5
R85 J5
R86 K5
R87 L5
R88 M5
R89 N5
JU7 L6
JU8 N6
JU9 H4
JU10H5
JU11C4
JU12B6
JU13C6
JU14H6
JU15H7
JU16H8
JU17K4
JU18J7
JU19J6
JU20K7
JU21M6
JU22L4
JU23E7
JU24 J5
JU25 L5
JU26 M5
JU27 B8
JU28 B8
JU29 B8
JU30 E8
JU31 N6
P4-2 P8
P4-3 A8
P4-4 J8
Q2 K8
R1 C2
R2 C3
R3 C3
R4 E3
R5 D4
R6 D5
R7 E5
R8 F6
R9 G7
R10 G4
R11 G5
R12 N7
R13 I2
R14 I2
R15 I3
R16 J4
R17 K3
R18 K4
R19 K3
R20 L4
R21 K2
R22 K3
R23 J5
R24 J5
R25 L5
R26 L5
R27 M5
R28 N5
R29 L6
R30 B4
R31 C4
R32 D4
R33 C4
R34 O7
R35 N7
R36 O7
R37 F4
R38 F4
R39 H3
R40 H4
R41 H5
R42 G8
R43 H8
R44 O8
R45 O8
R46 B6
R90 K8
TOT B9
TP1 J2
TP2 C7
U1 D4
U3a G4
U3b O8
U4a J3
U4b G6
U5a L3
U5b K5
U5c M5
U5d N5
U8a C8
U8b E8
U9 M7
U10 M8
Vset C7
Vset O8
C36 G3
C37 H4
C38 H5
C39 H8
C41 G6
C43 H6
C44 H7
C45 M6
C46 N6
C47 N7
C48 B8
C49 C7
C50 D7
C51 D7
C52 J2
C53 K3
C54 K2
C55 L7
FB1 B3
JU1 D7
JU2 G3
JU3 D3
JU4 B7
JU5 F6
JU6 O6
C1 C3
C2  D5
C3 G4
C4 B2
C5 C3
C6 C3
C7 E5
C8 E5
C9 E4
C10 G7
C11 E4
C12 O7
C15 F5
C17 J3
C18 J2
C20 K2
C21 K5
C22 K5
C23 M5
C24 L5
C25 N5
C26 N5
C27 N7
C30 C4
C35 F4
COMPONENT LOCATION TABLE
DES LOC DES LOC DES LOC DES LOC DES LOC DES LOC DES LOC DES LOC
VICTORIA B.C.
DE
DANIELS
ELECTRONICS
5-11
Transmitter Main Board Instruction Manual
5 . 5 . 2 A ud i o Pr o ce ss o r S c h e m a t i c D i a g ra m V 1 . 8
S UBT O N E IN P UT 1
C O NTR O L L EVE L
DWG REV DATE: 19 NOVEMBER 98
BOARD No: 43-911918
DWG No: MT3APM2D
TITLE: MT-3 TX AUDIO PROCESSOR SCHEMATIC DIAGRAM
DATE: 12 MAY 98
YX
Y
X
Y
X
JU41 -----U2,U6,U7
R78,R82,R83
R56-R70C40,C42
C31-C34C19,C28,C29
C13,C14,C16
U10TP2
R90P4Q2
JU44FB1C55
BOARD REV: VERSION 1.8
AUXILIARY IN P UT
L EVE L C O NTR O L
OPTIONAL
DC L EVE L A DJU S T
PRE-EMPHASIS
FLAT
6 POLE BUTTERWORTH FILTER
NOT INSTALLED FOR DIGITAL MOD.
+9.5V CONTINUOUS
Y
X
Y
X
HIGHEST REFERENCE DESIGNATORS
UNUSED REFERENCE DESIGNATORS
-----
Y
Y
X
X
C O M P R ESS I O N
C O NTR O L
AGC PREAMP
Y
X
TCXO LEVEL ADJUST
DWN BY: STAN POLYAKOV
Y
X
LOW FREQUENCY / DIRECT
MODULATION OUTPUT
h i gh = vo i ce
l o w = da t a
D EV IAT I O N
C O NTR O L
Y
X
Y
X
Y
X
Y
XY
X
Y
X
Y
X
Y
X
Y
X
Y
X
DIRECT
MODULATION
INPUT
APRVD:
M O DULA TI O N
O UT P UT
BALANCED INPUT
MICR O P H O N E IN P UT
L EVE L C O NTR O L
PRE-EMPHASIS
FLAT AUDIO
PRE-EMPHASIS
FLAT AUDIO
S YMM E TRY
ADJU S T
BALA NC E D
IN P UT L EVE L
C O NTR O L
3
P1
2
P1
1
P1
4
P1
3
P3
3
P2
1
P2
1
P4
3
P4
2
P2
1
P3
2
P4
4
P4
+9.5V CONTINUOUS
1 2
100nF
C46
1
2
JU4
1 2
JU37
1 2
R76
0R0
1 2
R72
0R0
1 2
R8
49K9
1 2
JU16
4
P2
+9.5V CONTINUOUS
12
C30
4.7uF
1
2
C7
2.2uF
12
C9
4.7uF
1
2
C3
4.7uF
1
2
R10
49K9
1
2
R11
49K9
1
2
C2
2.2uF
1
2
C8
10uF
2
13
JU22
1
2
10nF
C10
1
2
10nF
C15
+9.5V CONTINUOUS
+9.5V CONTINUOUS
+9.5V CONTINUOUS
1
2
C45
4.7uF
1
2
C55
4.7uF
1 2
JU18
1 2
C43
4.7nF
1 2
C44
330nF
1 2
R51
1K50
1 2
R52
11K8
1 2
JU14
1 2
JU15
1 2
R50
221K0
1 2
R49
27K4
1
2
R9
49K9
1
2
3
R48
100K0
1 2
JU12
1
2
JU13
1
2
3
R42
5K0
1
2
JU23
1
2
R46
4K53
1
2
3
JU38
1
2
3
JU30
1
2
3
JU1
1
2
C51
100nF
1
2
C50
4.7uF
1 2
R74
27K4
1
2
3
R75
50K0
1 2
C49
10nF
1 2
C48
1.0uF
1 2
JU29
1
2
JU39
1
2
R47
4K53 1
2
3
JU28
1
2
3
JU27
8
3
2
1
4
aU8
MC33172
6
5
7
bU8
MC33172
1
2
3
R38
100K0
1 2
R71
63K4
1 2
R80
68K1
1
2
R39
221K0
1 2
C36
10pF
1 2
C39
330nF
1 2
R43
11K8
1 2
C38
330nF
1 2
R40
1K50
1 2
C37
4.7nF
1 2
JU9
1 2
JU10
1
2
49K9
R13
1
2
49K9
R15
1 2
100K0
R16
1
2
10nF
C17
8
3
2
1
4
MC33172
aU4
6
5
7
MC33172
U3b
1
2
49K9
R21
1
2
49K9
R22
1
2
10nF
C53
1 2
4K53
R17
1 2
2K21
R20
1 2
5K11
R23
1 2
5K11
R24
1 2
39K2
R84
1 2
39K2
R85
1 2
3K48
R25
1 2
3K48
R26
1 2
22K1
R86
1 2
22K1
R87
1
2
10nF
C22
1
2
10nF
C24
1 2
10nF
C21
1 2
22nF
C23
6
5
7
MC33174
bU5
9
10
8
MC33174
cU5
13
12
14
MC33174
dU5
1 2
13K3
R27
1 2
13K3
R28
1 2
100K0
R88
1 2
100K0
R89
1 2
15nF
C25
1
2
1.0nF
C26
1 2
1.0uF
C47
1 2
33nF
C27
1 2
JU8
1 2
JU7
1
2
3
50K0
R29
1 2
3
4
5
TC4S66F
U9
1 2
3
4
5
TC4S66F
U10
1
2
49K9
R79
1 2
49K9
R55
1
2
10K0
R90
E
B
C
BC817-25
Q2
1
2
3
JU35
1
2
3
JU34
1
2
100nF
C4
1
2
10nF
C5
1
2
604R0
R1
1
2
3
5K0
R2
1
2
681R0
R30
1 2
1K50
R33
1 2
FB1
1 2
330nF
C35
1 2
150nF
C41
1
2
3
50K0
R14
1
2
221K0
R73
1
2
20K0
R77
TP2
TP1
4
3
2
1
8 U3a
MC33172
6
5
7
U4b
MC33172
2
3
4
1
11
U5a
MC33174
1 2
R81
10K
1
2
3
JU24
1
2
3
JU25
1
2
3
JU26
Vcc
Rect in
Rect Cap
Output
Input 1
GND
G in
Mute
Filt
VRef
I Ref
13
11
10
8
12
14
16
7 15
5
6
U1
SA578D
+8.0V SWD
+8.0V SWD
+8.0V SWD
+8.0V SWD
+8.0V SWD
+8.0V SWD
+8.0V SWD
+8.0V SWD
+8.0V SWD
+8.0V SWD
1
2
JU6
1
2
JU42
+9.5V CONTINUOUS
MT-3 TX TIME-OUT-TIMER
J3
J2 J4
J1
P7
P6
P5
P84
P3
2
P3
1
1
1
2
3
5K0
R31
1
2
N/I
R12
1 2
0R0
R44
1 2
N/I
R53
1
2
N/I
R6
2
1
3
JU11
1 2
N/I
R45
1
2
R7
37K4
1
2
R5
8K25
1
2
R4
3K01
2
1 3
JU36
1
2
3
JU3
1 2
JU2
1
2
470K0
R32
1 2
R37
49K9
1 2
R41
49K9
1 2
1K2
R19
1 2
1K0
R18
1
2
4.7uF
C54
1
2
100nF
C20
1
2
4.7uF
C52
1
2
100nF
C18
1
2
100nF
C11
1 2
75K0
R34
1 2
1.0nF
C12
1 2
274R0
R54
1
2
68K1
R35
1
2
3
50K0
R36
1 2
10nF
C6
1 2
220nF
C1
1 2
5K11
R3
1 2
JU40
1
2
3
JU5
1 2
JU17
1
2
3
JU20
1
2
3
JU19
1
2
3
JU44
1
2
3
JU21
1 2
JU32
1 2
JU43
1 2
JU33
1 2
JU31
MICROPHONE INPUT
SUBTONE INPUT 1
TONE/DIGITAL I/P
SUBTONE INPUT 2
Tx Audio Control
Vset
Vset