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• IC Block Diagrams
IC1 IR3N74AN (BASE MAIN Board)
IC602 IR3N74AN (HAND MAIN Board)
IC3 MC3361CD (BASE MAIN Board)
IC601 MC3361CD (HAND MAIN Board)
+
–
12 9 8 711 10
1 2 3 4 6
–
+
MUTE
MUTE LIMITER
REGULATOR
∆G
∆G
VREF
GND
MUTEC
CO
VCC
MUTEE
EO
EREC
EPI
VREF
CREC
ACP
CPI
VREF
VREF
VREF
–
+
+
–
–
+
5
MIXER
OUTPUT
LIMITER
INPUT
2
3
VCC
4
5
DECOUPLING
6
QUAD
COIL
7
8
CRYSTAL
OSC
1
MUTE
SQUELCH
IN
15
14
SCAN
CONTROL
GND
FILTER
INPUT
13
12
FILTER
OUTPUT
11
RECOVERED
AUDIO
10
9
MIXER
INPUT
16
SQUELCH TRIGGER WITH
HYSTERESIS
MIXER
OSCILLATOR
FILTER
AMP
AF
AMP
LIMITER
AMP
DEMODULATOR
+
+
+
_
IC201 MC34119DR2 (BASE KEY Board)
+
8 7 6 5
4321
_
+
_
VO2
CD
CF 2
CF 1
V in
GN
Vcc
VO1
BIAS
CIRCUIT
IC207 TK11237BMCL (BASE KEY Board)
1
6
2 3
5
REG
4
VOLTAGE
CONTROL
COMP
VIN
GND
VOUT
CONTROL
GND
NOISE
BYPASS
IC302 M64884FP-C60J (BASE RF Board)
IC502 M64884FP-C60J (BASE RF Board)
IC604 TK11130SCL (HAND MAIN Board) IC605 XC612N3328MR (HAND MAIN Board)
PROGRAMMABLE
DEVIDER
LATCH
PROGRAMMABLE
DEVIDER
LATCH
PROGRAMMABLE
DEVIDER
LATCH
1/2
1/16, 1/17
PRESCALER
1/32, 1/33
PRESCALER
VCO (TX)
OSC &
1/2 DEVIDER
1 2 3 4 5 6
7 8 9 10 11 12
PHASE
DETECTOR
LATCH
SELECT
SHIFT
REGISTOR
PULSE
COUNTER
17 16 15
PHASE
DETECTOR
MIX
VCO (RX)
21 20 19
18
24 23 22
LOCK
DETECTOR
14 13
TX GND1
TX OUT
TX VCC
TXB
TXE
TX GND2
PD1
VCC
XIN
XOUT
XBO
GND
MIX OUT
LOCK
CPS
SI
RST
PD2
RX GND
RXE
RXB
RX VCC
MIX GND
MIX IN
REGULATOR
COMP.COMP.
THERMAL
SENSOR
VOLTAGE
CONTROL
BANDGAP
REFERENCE
VIN
VOUT
CONT
VREF
GND
5 4
1
3
2
COMP.
COMP.
REFERENCE
VOLTAGE
VDET2
VIN2
VDET1
VSS
VIN1
5 4
1 32
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