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SECTION 8
BLOCK DIAGRAM
8-1
RF OUT
DET
TX MUTE
CTRL
HV
Q13
D12,D13
IC2
D601
REVERSE
CONNECT
PROTECT
INT SP
D14,D15
HV
PTT
MIC
D11,Q17
T5
CTRL
Q10,Q11
IC512
5V
NMEAI+
NMEAI-
IC552,D551
PHOTO
COUPLER
NMEAI+
NMEAI-
HV
Q511,Q512
NMEAO+
NMEAO+
EXT SP+
+3
REG
IC506
EVOL
T5V
T5V
T5V
3.3V
VCC
Q16
IC511
5V
AFVOLO
AFVOLI
NMEAI
BUFF
NMEAO
BUFF
V1
IC551
IC701
D16
Q14
IC703
Frequency range(USA)
TX:156.025MHz~157.425MHz
RX:156.050MHz~163.275MHz
EXT SP-
IC504A
Q1,Q2,D1
DS2~DS9
IC1
DSCENC
IC14
IC4,D11
HV
IC2B
KEY
BOARD
L3V
PWM
DIM
CTRL
A/D
IC9
RESET
DSC SW
L3V
IC5A/B,Q3,Q4,D3
HV
IC2A
L3V
L3V
LCD
MODULE
L3V
IC10
A/D
ICF3
EEPROM
LCD
IC3
REG
3.3V
L3V
DS1
IC5C
DISTRIBUTOR
5V
5V
5V
NMEAO-
NMEAO-
IC702
L3V
IC504B
IC201
MAIN-Lo Frequency range(USA)
TX:156.025MHz~157.425MHz
V2
3.3V
TCXO
26.0MHz
X2
HV
HV(LOGIC)
Audio filter
Sub CH filter
FM modem
AFC loop
LNA
VCO
PGA
RSSI
PGA
DAC
Synthesizer
DSP
Core
RA
driver
RA
driver
ADC
LDO
ADC
0/90
ADC
PGA
DAC
LDO
ADC
Synthesizer
ADC
0/90
PGA
RSSI
ADC
LNA
VCO
VCC
HV
Q201,Q202
R5V
R5
CTRL
R5V
5V
IC504D
3.3V
3.3V
BUFF
Q12
Q101
IC505
IC301
PTT
CLONE
MIC
MICG
PTT
EXT SP-
EXT SP+
NMEAI+
NMEAO+
NMEAO-
NMEAI-
IC302
GPS
Engin
GPS
Antenna
SAW
Filter
L3V
FI201
EP2
Q18,Q19
BIAS
CTRL
IC201
PWR
CTRL
BPF
PWR
CTRL
AF
AMP
LPF
ANT
SW
YGR
AMP
PWR
AMP
APC
CTRL
LPF
AF
MUTE
AF
MUTE
CI-V
I/F
BUFF
BUFF
PRE
AMP
AF
MUTE
LPF
LPF
ATT
+5
REG
AF
MUTE
RF
AMP
PRE
DRIVE
AMP
MIC
AMP
ATT
ANT
SP1
X1
7.9872MHz
EP1
EP3
EP4
EP2
J2
HL/ATT
TDETV
IMICS
DSCDEC
DTEST
BEEP
WXDEC
DSCO
AFINM
DSCS
T5VS0
MICIN
BEEPO
PONO
PONO
TXMSO
RXON
MAIN DET
DSCDEC
WXDEC
MICIN
HL/ATT
PCON
HL/ATT
MAIN UNIT
JACK UNIT
HM-237
FRONT UNIT
For only IC-M220G
CPU
Audio filter
Sub CH filter
FM modem
AFC loop
DSP
Core
CHASSIS UNIT
GPS ANT
UNIT
Explanatory notes
COMMON Line
RX Line
TX Line
Voltage Line (HV)
Voltage Line (VCC)
Voltage Line (5V)
Voltage Line (3.3V)
DATA Line