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Q2009
1 5 M Hz VCXO
Q20 5 5
P L L 2 V C O Ou tpu t
(fX FM/CW)
Buffer Amp
Q20 1 0
2SC5 3 5 B
FM/CW
TX
Carrier
Q2056
Not Used
Disable Sw
Q205 7
2SC5 3 5 B
NPN S i TR
1 st RX/3rd
TX
LO
Q20 1 1
RX and SSB/AM TX ,
Preamp
1 5 MHz Car LO Buffer
Q20 5 8
2 N44 2 7
1 st Local Amp
Q20 1 2
SN 1 6 9 1 3 P
Mixet IC
Carrier Premixer
Q2059
2SC4 5 8 B
VOX Amplifier
Q20 1 3
2SC4 5 8 B
NPN S i TR
RX Carrier LO Buffer
Q2060
Q20 14
TX Carrier LO Buffer
Q206 1
AN6 5 5 1
Op amp IC
VOX Comparator
Q20 1 5
6 . 78MHz S S B Car and
Q206 2
2SC45 8 B
NPN Si TR
VOX Switch
SHIFT VCXO
Q206 3
Counter Startup Delay
Q20 1 6
2SC5 3 5 B
3 2 .06MHz 2nd L O and
Switch
WIDTH VCXO
Q2064
M C 1 4 0 2 8 BCP
BCD-Dec
µP PLL Div Freq Data
Q20 1 7
2SC4 5 8 B
3 2 .06 MHz Buffer Amp
Decoder IC
Decoder
Q 20 1 8
SN76 5 1 4 N
Mixer IC
2nd Local Premixer
Q206 5
MC145 1 0 BCP
BCD U/D
Tuning Pulse Counter
Q20 1 9
2SC5 3 5 B
NPN S i TR
2nd Local Buffer Amp
Counter IC
Q2020
2SC4 5 8 B
Disable S w (CW)
Q2066
MC140 1 1 BCP
Quad NAND IC Tuning, Au to Scan
RX and S S B/ AM TX
Gates
Carrier
Q206 7
SC820 72P
8-bit µP LSI
Freq Control CPU
Q20 2 1
(FM )
Q206 8
µPC 7 8 L05
Regulator IC
5V Reg for Local and
Q2022
µPC 7 8 L05
Regulator IC
Reg for RX IF Shift
Dial Unit Logic
Preset on TX
Q206 9
MC1404 2 BCP
Quad Latch IC
µP Band Data Decoder
Q20 23
Not Used
Latch
Q20 24
2SA7 3 3 AP
PNP Si TR
IF Shift Disable on
TX
Q20 70
SN74LS 145 N
BCD-Dec
Band Data BCD-Dec
Q20 25
2SC4 5 8 B
NPN S i TR
1 5 MHz PLL Ref, RX
Decoder IC
Decoder
and SSB/AM TX Car
Q20 7 1
2SC4 5 8 B
NPN S i TR
CPU Startup Reset
Oscillator
Delay Switch
Q20 26
1 5 M Hz Buffer Amp
Q20 72
Q20 2 7
HD105 5 1P
Divider IC
1 /20 Ref Divider for
Q20 73
TX Inhibit Switch
Marker
(for MAN and EXT)
Q20 28
2SC5 3 5 B
NPN Si TR
4 5 MHz Tripler for
PLLl LO
D 200 1
1 N2 70
Ge Diode
TX, SSB PROC Limiter
Q2029
SN16 9 1 3 P
Mixer IC
PLLl Mixer
D2002
Q20 3 0
2SC5 3 5 B
NPN Si TR
PLLl IF Amp
D2003
M A 1 90
Si Diode
TX FM IDC Switch
Q20 3 1
MC145 145
CMOS IC
PLLl Prog Div and
D2004
Phase Detector
02005
TX AF Amp Disable
Q20 3 2
2 S K 1 9 2AGR
JFET
34-3 9MHz VCO
Switch (CW)
(PLLl )
D 2006
TX
AF Amp Disable
Q20 3 3
2SC4 5 8 B
NPN S i TR
PLLl VCO Feedback
Switch (FM)
Buffer
D 200 7
MV 1 0 3
Varistor Diode
Temp Compensator for
Q20 34
PLLl VCO Ou tpu t
FM Modulator
Buffer
D2008
M A 1 90
Si Diode
TX CW Car Osc Crystal
Q20 3 5
HD1055 1 P
Divider I C
1 / 1 0 PLL l Ou tpu t
Switch
Divider
D2009
TX FM Car Osc Crystal
Q20 36
2SC5 35 B
NPN Si TR
PLL Ref Tripler/
Switch
Quadrupler
D20 1 0
FC5 3 M-5
Varactor Diode FM Modulator
Q203 7
SN76 5 1 4 N
Mixer I C
PLL2 Local Premixer
D 20 1 1
M A 1 90
Si Diode
TX FM Car Osc Bias Sw
Q20 3 8
2SC5 35 B
NPN Si TR
PLL2 4 1 MHz Local
D20 1 2
TX FM/CW Car Osc
Amp
Disable Sw (RX )
Q20 3 9
PLL2 5 6 M Hz Local
D20 1 3
RX , SSB/AM TX
Amp
1 5 MHz Car LO
Q2040
SN765 1 4 N
Mixer IC
PLL2 Mixer
Disable (FM/CW TX )
Q204 1
2SC5 3 5 B
NPN S i TR
PLL2 IF Amp
D 20 1 4
Enable Sw (
)
Q2042
MC145 1 45
CMOS IC
PLL2 Prog Div and
D 20 1 5
Rev Voltage Isolator
Phase Detector
(SSB/CW RX )
Q2043
2SA7 3 3 AP
PNP Si TR
PLL Unlock Switch
D 20 1 6
RD 7 .S EB3
Zener Diode
7 .S V Reg for Car Sw
Q2044
2SC4 5 8 B
NPN Si TR
TX Inhibit Switch
Q20 1 1
(for Unlock)
D20 1 7
M A 1 90
Si Diode
USB Car LO X
ta!
Sw
Q2045
2SC5 3 5 B
PLL2 1 st R X , 3rd TX
for USB, CW, AM , FM
Local VCO
D 20 1 8
LSB Car L O Xtal Sw
(0 .5 - 7 .S MHz )
D 20 1 9
FC5 2M-5
Varac tor Diode 6 .78MHz VCXO IF
Q2046
" (7 .5 - 1 4 .5 MHz )
SHIFT Control
Q2047
" (14 .5 - 2 1 .S MHz )
D20 20
1 SV50
3 2 .06 M Hz 2nd LO IF
Q2048
" (2 1 .5 - 3 0 .0MHz )
WIDTH Control
Q2049
2SA73 3 AP
PNP Si TR
PLL2 LO and VCO
D20 2 1
M A 1 9 0
Si Diode
Rev Voltage Isolator
Bandswitch
(CW TX Sw )
(0 .5 - 7 .S MHz )
D2022
" (FM TX Sw)
Q2050
" ( 7 .5 - 1 4 .5 MHz )
D 2023
" (SHIFT TX Preset )
Q20 5 1
" (14 .5 - 2 1 .5 MHz )
D2024
1 S S 1 0 1
Schottky
. .
(
)
Q20 5 2
" (21 .5 -30MHz )
Barrier Diode
Q20 5 3
2SK19 2AGR
JFET
PLL2 VCO Feedback
D2025
RD9 . 1 EB3
Zener Diode
Reg for SHIFT
Buffer Amp
Reference
Q2054
2SC5 3 5 B
NPN Si TR
- 30
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Содержание FT-757GX II
Страница 1: ...FT 757GX TECHNICAL SUPPLEMENT YAESU MUSEN CO LTD C P 0 BOX 1500 TOKYO JAPAN...
Страница 4: ......
Страница 26: ...DISPLAY UNIT 0 DIAL UNIT Inside Front Panel 23...
Страница 42: ...LOCAL U N IT PARTS LAYOUT solder side 39...
Страница 49: ...1 00W PA U N IT PARTS LAYOUT Component side Solder side 44...
Страница 51: ...1 0W PA U N IT PARTS LAYOUT 46 Component side Solder side...
Страница 55: ...MEMO 50...
Страница 70: ...YA E SU v E3 8 9 0 1 8 4 E 2 8 4 0 6 P...