Cobra MR HH330 FLT - Block Diagram

D3
X2
20.95MHz
SPEAKER
MIC
X3 7.3728MHz
VR3:C
VR2
MOD
U2: LM2904
APC
R103R102
CURRENT DET
U5:A
1SS356
21.4MHz
LOB BAT
DAN235E
D9
2SC4901
Q26:BT3906
2SC4901
3SK318
2SC4901
R149R148
TX POWER AMP.
F3,F4
LOW BAT
Q5
BUFFER AMP
RX/TX SW
2SC4901
Q3
BUFFER AMP
2SK3078
Q12
TX YOUNGER
U1 BA4116
2nd LOCAL MIXER,SQL
Q2
IF AMPCRYSTAL BPF
Q8
1st MIX
Q7
RF AMP
D1,D2
ANT SW
TX/RX TRANS
ANT
Q9:BT3906
VTX VCO
U6
AUDIO
AF POWER
AF POWER AMP
Q16,Q21,Q22
S8550
U11
BT3904 X 2
MIC AMP
NJM2070
U4:A,B
LM324(2/4)
LM324(1/4)
AF MUTE
U205
PIC24FJ64GA006
DATA BACKUP
U14
24C16
U8:XC6204B502
Q18:S8550
AUDIO
Q6
RD07MVS1
LCD
BPF
R77
C141
C142
KB8825
PLL
U4:C
ATIS
F5 450KHz
2nd-if
RX VCO
Q13
2nd-IF DET
H/M/L POWER CONTROL
R90
TX VCO
Q14
2SC4901
Q4
AMP
2SK210
2SK302
D11
MOD
1050Hz&ATIS DET
U3
RESET
XC61CN2702M
RESET
Q17:Bt3904 D16: BAW56
LM324(1/4)
LPF
BPF
LPF
LPF
SAW BPF
HVU307
MOD
HUV307
D10
HUV307
D12
F.CONT
F.CONT
F1:HDF160B
RSSI
SQL
SQL
SQL RSSI
B+7.4V
B+7.4V
B+7.4V
B+7.4V
CALL/BEEP
AF SW
1050HZ&ATIS
1050Hz&ATIS
AF SW
AF MUTE
RX SW
VTX VCO
RX SW
TX 5V
RX 5V
RX SW V TXPOW
VCC 5V
CALL/BEEP
APC
LPF
SAVE
Q10: MB3904
VR1
Q11: MB3904
CLONE
156-163MHz
SAW BPF
156-163MHz
F2:HDF160B
ATIS
X1
CBD450C24
LOCK
U5:D
DATA
LM324(1/4)
CLK
CS
LPF
D4
LCD BACK LAMP
RF PART
CPU PART
BATTERIES Li-POLYMER_7.4V
1 3 4 5 6 2
J2
SP/MIC JACK
Q1 2SC4901
C1,C5,C12
L1,L2
C62,C16
20.95MHz
PD
R104
Q24:BT3906
Q25:BT3906
VCC 5V
U402
HT1621
V TXPOW
MOD
B+7.4V
D6
D7
KEY BACK LAMP 1
VCC 5V
CPU 3.3V
LCD DRIVER
Q27
BT3904
U5:C
CALL DET LM324(1/4)
CALL DET
CALL DET
CALL
Q28
LED DRIVER
+5V
U10:XC6204B332
Q30
LED DRIVER
D6
D7
KEY BACK LAMP 2
B+7.4V
PWM LPF
ATIS PWM OUT
U4:D
LM324(1/4)
16/9
H/M/L
DOWN
UP
KEY BOARD
TRI
SCAN
LAMP
PTT
CALL/SQL
MEM
VOL
VOL 10K
VR3:A
R198
330
R192
10K
WX_ALERT/BURP
WX_ALERT/BURP
BLOCK DIAGRAM (for HH330)
6