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SPP-Q123
– HANDSET SECTION –
ANT 1
HELICAL
ANTENNA
BPF1
BPF2
BPF
BPF
RF
AMP
Q1
49.0MHz
BPF51
BPF
46.0MHz
D203
CN202
CHARGE
TERMINAL
D202
CN201
B+
(+4V)
BT901
RECHARGEABLE
VOLTAGE
BATTERY
2
DET
BP-T16
IC201
3.6V
MIX,IF AMP,DET
IC101(1/3)
RF
MIX
CF102
MIX
MIX
IN
OUT
10.68MHz
IN
OUT
1st
2nd
40
38
36
MIX
MIX
PX
RX
LOCAL
PLL
PLL
OSC
L01
L02
43
44
42
46
3
4
X101
L101
10.2MHz
LOCAL
OSC
RF
AMP
Q51
TX B+
B+
SWITCH
(+4V)
Q54
D501
B+
TALK/BATT LOW
(+3.6V)
RESET
1
Q201
HOLD
GND
D504
Q501
SWITCH
Q202
D502
– 17 –
B+(+2.4V)
FL101
DET
28
CF101
IF
IF
LPF
IN
AMP
AF
OUT
34
32
DET
27
460kHz
RSSI
COMP IN
24
DATA
TX
COMP
PLL
1
47
22
23
RV101
RSSI H
MODULATION
D51
TX VCO
L52
Q52
45
8
RSSI
RX
H/L
DATA
TX DATA
9
TX DATA
10
46
H • MUTE
13
TX B+ CTRL
PLL CLK
7
PLL DATA
5
PLL STB
4
BATT LOW
37
48
LED
SIG IN
3
MIC
28
38
CHG DET
BEEP
11
SYSTEM
CONTROL
IC501
KEY LED
KEY LED
2
DRIVE
Q401
RESET
21
KEY MATRIX
29
31
ROW 1-5
34
12
HOLD
24
COL 0-3
22
ACT3
27
23
ACT4
OSC1
OSC2
17
20
X501
4.048MHz
EXPANDER
IC101(2/3)
PRE
MUTE
IN
EXP
OUT
15
EXPANDER
17
PRE
AMP
COMPRESSOR
IC101(3/3)
FIL
MUTE
LPF
COMP
OUT
OUT
LIMITER
COMPRESSOR
9
10
11
DATA LATCH
CONTROL
BATT
ALARM
6
7
8
20
BATT LOW
SWITCH
Q502
BUZZER
DRIVE
Q301
D401-404
– 18 –
RECEIVER
RECE
AMP
IN
R01
18
20
SP1
SPEAKER
R02
19
MIC1
14
MIC
MIC
AMP
SIG
OUT
5
BZ301
BUZZER
• Signal path.
: RX (From Tel Line)
: TX (To Tel Line)
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