Table of Contents
Advertisement
SPP-69/79
5-2. BLOCK DIAGRAM — BASE UNIT SECTION —
ANT1
TELESCOPIC
ANTENNA
BPF1
46MHz
1st
1st
CF102
MIX
MIX
10.68MHz
IN
1st
OUT
40
38
MIX
RX
RX
VCO
PLL
43
44
42
46
L101
RX VT
BPF51
49MHz
TX
AMP
Q51
B+ (+9V)
1
J301
IC302
DC IN 9V
CHARGE
+
REG
Q402
CHARGE
CHARGE
LIMITER
TERMINAL
Q403
CHARGE
–
Q401
04
MIX, IF AMP, DET
IC101 (1/3)
CF101
460kHz
2nd
2nd
MIX
MIX
AMP
IN
2nd
OUT
IF-IN
36
34
32
MIX
RSSI
LOCAL
TX
PLL
OSC
LO1
LO2
TX-IN
TX-OUT
3
4
1
47
X101
10.22MHz
TX
OSC
Q52
L52
TX VT
SYSTEM CONTROL
IC501
RSSI H/L
TX +B
SWITCH
Q54
22 TX +B CTRL
14
POW-DET
VOLTAGE
RESET
1
DET
3
12
RESET
Q302
IC301
REG
3
B+ (+5.2V)
D401
CHARGE
DET
18
CHG DET
– 19 –
B+ (+5.2V)
FL101
460kHz
RX LEVEL
IC101 (2/3)
28
IF
LPF
AF-OUT
PRE-IN
QUAD
27
15
EXPANDER
PRE
AMP
D-COMP-IN
24
DATA
COMP
RSSI
22
23
RV101
RSSI Hi
MODULATION
D51
FIL-OUT
FIL-IN
9
10
SPLATTER
DATA LATCH
19
4
CONTROL
RX-DATA
TX-DATA
7
H-MUTE
6
6
7
3
CLK
2
DATA
1
STB
SIG-IN
5
DP
20
RING
30
21
DTMF
S301
HANDSET LOCATOR
PAGE
16
DIAL MODE
17
10
9
X501
4.048MHz
D101
EXPANDER
RECEIVER
E-MUTE
AMP
EXP-OUT
RECE-IN
R02
17
18
20
LINE TX
R01
19
DRIVE
Q202
COMPRESSOR
IC101 (3/3)
RX BUFFER
IC303
RX
RX
OUT
IN
COMP-OUT
MIC-IN
11
14
4
COMPRESSOR
C-MUTE
MIC
AMP
LIMITER
SIG-OUT
8
5
S302
DIAL MODE
T
P
Signal path
: TX (To Tel Line)
: RX (From Tel Line)
: bell
– 20 –
MJ201
LINE
D205
RECT
B+ (+5.2V)
T201
LINE
TRANSFORMER
LINE TX
DRIVE
Q203
B+(+5.2V)
HOOK-SW
D203
PH202
D204
RING DET
3
PH201
HOOK-SW
DRIVE
Q201
Advertisement
Table of Contents
