40
ANT
L52
C199
L44, L47,
L48, L49
5R
Q20
C167
L34, L35
L39
C174
Q12
R55
XF1
1st Local
0.85Vr
ms
R47
Q6
C80
IC2
16
95
7
IC306
AF VR
41
0
IC309
Q324
SP
RF center
IF 38.85MHz
AF 1kHz
-117dBm
-119dBm
-109dBm
-109dBm
-102dBm
-108dBm
-99dBm
110mVr
ms
260mVr
ms
13mVr
ms
0.63Vr
ms
MIC
21
IC308
VR302
D12
C71
C82
Q5
Q7
C93
Q11
Q13
C116
C122
Q15
C135
Q18
ANT
5W
AF VTVM
RF VTVM
5.0mVr
ms 340mVr
ms
185mVr
ms
0.15Vr
m
s
0.56Vr
m
s
1.2Vr
m
s
0.50Vr
m
s
C212
Q22
SG output level for obtaining 12dB / SINAD when injected to each point
through a 470pF coupling capacitor.
Measure the 1st Local level on a RF VTVM.
LEVEL DIAGRAM /
电平图
Modulate the AF level with a frequency of 1kHz and deviation of 1.5kHz
(Narrow), 3kHz (Wide). Then take the signal from the signal generator
output when set to -53dBm and obtain the level shown on an AF VTVM
when the AF output has been adjusted to 0.63Vrms with the AF vol.
Measure the audio frequency on an AF VTVM and radio frequency on a
RF VTVM at high impedance.
Set the MIC input to obtain a modulation factor of 60% with the transmit
frequency at center and a modulation frequency of 1kHz.
RX section
TX section
BLOCK DIAGRAM /
方块图
ANT SW
TX-RX Unit X57-6243-XX A
X41-3583-00
TX-RX Unit X57-6243-XX B
FINAL AMP
SW
SW
SW
5T
5T
APC
DET
B
APC
IC3
NJM2904V
Q23
DTA
144EE
Q24
DTC144EUA
Q17
DTC
114EE
DRIVE AMP
AMP
Q22
2SK3476
Q18
2SK3475
Q15
2SC4988
5T
AMP
Q13
2SC5108
5T
LO.SW
AMP
5C
Q11
2SC5108
BUFF AMP
Q7
2SC5108
5C
RX
D14
D15
HSC277
X2
RIPPLE FILTER
Q10,D13
2SC4617
MA2S111
T/R SW
RX VCO
Q4
2SC5066
Q5
2SC5066
TX VCO
DEV
D12
MA360
F.CONT
D6,D9
MA2S376XL
F.CONT
D7,D11
MA2S376
X2
DEV
Q8,Q9
2SJ243
KRX102U
5C
5T
D24
D27
HVC131
ANT SW
D25
D26
HSC277
X2
REVERSE
PROTECTION
D3
ISR154
B
LPF
ANT
BPF
AMP
5R
Q20
3SK274
TUNE
BPF
5T
Q14
DTC
114TE
THERMAL
PROTECTION
TUNE
XF1
MCF
38.85MHz
5R
Q12
3SK320
1ST MIXER
CF1
CP
450kHz
IF IC
IC2
TA31136FN
IF AMP
Q6
KTC4082
5R
3.5R
SM
L22
DET COIL
MUTE SW
WIDE/NARROW SW
IC306
FLAT AMP
IC307
LPF
LPF
NJM2904V
TI
TIBI
BASE BAND SECTION
LPF
HPF
HPF
NJM2902V
Q316
DTA
144EE
Q314
2SC4617
WNRC
HPF
Q313
22SK1824
MUTE
VOLUME
AUDIO AMP
IC309
KIA6278F
DET
D301
MA742
VOX
Q324
2SK1588
SW
SW
POWER SW
B
SW
Q320
DTC
144EE
Q323
DTC
144EE
Q321
KTA1298
MUTE SW
SP
SB
B
AMP
KEY
Q317
2SC4738
Q319
DTA
144EE
5R
5C
AFCO
16KEY
F
DAIC
SCAN
LOW
AGC/MUTE
MIC500
MIC
Q322
2SC4919
SW
MUTE
D308
DAN222
DET
D307
1SS372
LIMITER AMP
HPF
IC308
NJM
2902V
LPF
IC308
NJM2902V
5MS
Q318
2SK1824
WIDE/NARROW SW
SW
VR302
DEV
DEV
TO
VR301
DQT BALANCE
LIMITER
D306
DA221
LOOP FILTER
Q3
2SC5108
AMP
PLL IC
UL
3.5C
3.5C
CLOCK
SHIFT
CHANNEL SW
EEPROM
D304
D305
IC302
24LC16BT
SCL
SDA
CPU
IC300
M38287MBL271GP
Q303
DTC
114YE
7.3728MHz
MODEL
00: C
01: C4
TX-RX Unit
X57-6243-XX
12.8MHz
PLL DATA
EP
DT
CK
2ND LOCAL
TO
TXD RXD
APC/TUNE
WNRC
TO
SAVE
5MC
5TC
WNTC
PABC
GLED
SHIFT
UL
KEY
5M
IC303
PST
914SNR
INT
IC304
PST
9124NR
RESET
IC305
XC62FP
3502P
3.5V REG.
Q310
KTA1298
Q311
UMG3N
AVR/SW
3.5m
SB
BATT
TI
TIB1
BUSY
5RC
AFCO
MUTE
EP
DT
CK
RLED
BEEP
RX
TCXO
X1
IC1
MB15E035L
VR1
NOISE DET
D1
MA742
DTMF DEC
IC301
LC73881M
BUSY
NOISE AMP
Q1
2SC4738
Q2
KTC4082
X3 2ND LOCAL AMP
38.4MHz
3.5R
TCXO
12.8MHz
SW
Q302
DTC114EE
LCD
TX-RX Unit
X57-6243
-XX C
PTT
MONI
Q301
DTC
114EE
RLED
SW
D300
Q300
DTC
114EE
GLED
SW
D313
TX/BUSY LAMP
SB
Q304
DTA123JE
SW
3.5ms
Q325
DTA123JE
SW
3.5R
3.5C
SB
Q305
UMG3N
Q306
UPA672T
Q307
FP210
Q308
UPG3N
AVR/SW
Q309
DTA123JE
Q312
DTC144EE
SW
5R
5T
5C
SB
BATT
WNTC
READ/WRITE
TK-3118
BC-20 / PB-40 / PB-41 / BT-12
TK-3118
TK-3118
TK-3118
37
38
39
BC-20 RAPID CHARGER
PB-40 (Ni-MH) STANDARD BATTERY PACK
SPECIFICATIONS
Voltage
: 7.2V
Battery Capacity
: 600mAh
Charging time
: approximately 60 minutes
PB-41 (Ni-MH) LONG LIFE BATTERY PACK
SPECIFICATIONS
Voltage
: 7.2V
Battery Capacity
: 1000mAh
Charging time
: approximately 100 minutes
BT-12 BATTERY CASE
AA Battery X 5
