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4-1.
BLOCK DIAGRAM
TRANSMITTER SECTION
MIC AMP, ALC
IC101
+IN
OUT
MIC101
MIC AMP
MIC
3
(MIC)
Q106
AMP
DET
RECEIVER SECTION
ANT2
(ANTENNA)
RF AMP
Q201
L201
T201
T202
RECEIVER
(RF)
(RF)
LOADING
COIL
RECEIVER
RECEIVER
SENSITIVITY
SENSITIVITY
05
SECTION 4
DIAGRAMS
L105
X102
FREQUENCY
16.620MHz
X101
16.610MHz
L105
(FREQUENCY)
BUFFER
5
Q104
RV102
D101
X103
DEVIATION
16.630MHz
S101-2
MIX, IF AMP, DET
IC201
CF201
MIX
MIX
IF
455kHz
IN
OUT
IN
IF
16
MIXER
3
5
AMP
LOCAL
OSC
1
13
S201
CH
A
B
C
X201
X203
49.375MHz
49.435MHz
X202
49.405MHz
– 9 –
B+
RV101
TRANSMITTER
OUTPUT
S101-1
OSCILLATOR
BUFFER
TX POWER AMP
Q103
Q102
Q101
S101
T102
(RF)
CH
A
TRANSMITTER
OUTPUT
B
C
CF202
455kHz
10
AF
OUT
QUADRATURE
L.P.F.
9
L.P.F.
DET
NOISE
FILTER/
FIL IN
8
DET
NOISE AMP
BUFFER
IC203 (2/2)
RV201
SQUELCH
B+
B+
D205
RANGE ALM.
3
BUFFER
1
COMPARATOR
IC203 (1/2),
2
IC204 (1/2)
Q205
RV203
D203
D202
Q206
SWITCHING
ANT1
(ANTENNA)
L.P.F.
L101
T101
TRANSMITTER
(RF)
LOADING COIL
TRANSMITTER
S102
OUTPUT
(POWER)
OFF
ON
L106
REGULATOR
B+
Q105
ADAPTOR
D102
POWER
B+
POWER AMP
IC202
9
REG
15
REGULATOR
RV202
VOL
14
VOLUME
IN2
OUT
POWER
1
7
AMP
NF2
4
MUTING
SWITCH
Q202
VOICE ACT.
RV203
B+
ON
S202-2
MONITOR
(VOICE ACT. /ON/OFF)
LEVEL
OFF
6
D212
SCHMITT
7
COMPARATOR
SWITCHING
TRIGER
5
IC204 (2/2)
Q204
Q203
S202-1
(VOICE ACT. /ON/OFF)
REGULATOR
D208 – 210
B+
Q207
VOICE ACT.
D207
POWER/BATT
ON
OFF
– 10 –
NTM-30
• SIGNAL PATH
: RX
: TX
AC
AC IN
SP201
(SPEAKER)
D204
MONITOR
DRY BATTERY
6F22
(IEC DESIGNATION 6F22)
1PC. 9V
J201
DC IN 9V
–
+
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