Yaesu FT-757GX II, Техническое дополнение

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D1034
RX 1 st IF T/R Sw
D 1 0 8 1
RX
C W A F Filter Sw
(to XF0 1 )
Dl082
Not Used
D 10 3 5
T X 2nd I F T/R Sw
D1083
MV1 2 Varistor Temperature Comp for
(from XF01 )
ALC
D1036
TX
2nd IF T/R Sw
Dl084
RD9 . 1 EB2 Zener Diode Rev ALC Latchup
(to XF0 1 )
Protector
D 1 0 3 7
R X 1 st IF T/R Sw
D 1085
MA190 Si Diode Reverse EXT ALC
(from XF0 1 )
Protector
D l 0 3 8
1 SS 1 06
Schottky NB Noise Detector
D 1086
RD9 .1EB2 Zener Diode
Barrier Diode
D1087
MA190 Si Diode
Fwd/Rev ALC Diode
D1039
OR (Rev)
D1040 MA190
Si Diode Reverse Voltage
D 1088 RD9 . 1 EB2
Zener Diode Fwd ALC Latchup
Isolator
Protector
D104 1
NB Gate
D l 089 MA190 Si Diode
Fwd/Rev ALC Diode
D1042
OR (Fwd)
D1043
D 1 090 ND487C2-3 R Ring Module
TX
3rd Mixer
D1044
RX 2nd IF T/R Sw
D l 0 9 1 MA1 90 Si Diode Reverse Voltage Isola tor
(to Xtal Filters)
(from Meter Amp
D1045
TX 1 st IF T/R Sw
Ql05 1a)
(from X ta! Filters) D 1 092
" (from
D 1046
CW Xtal Filter Sw
Q1060d)
D1047
D 1093
D1048 1 SS9 7
Schottky SSB Xtal Filter Sw
D1094
PTT Line Switch
Barrier Diode
D 1095
CW Keying Line Sw
D1049
D 1096
Not Used
D1050
AM Attenuator Sw D 1 0 9 7 MA190
Si Diode 1 8MHz
TX
Disable
Dl05 1
D 1098
24 .S MHz TX Disable
D105 2
MA190 Si Diode
TX 1 st IF T/R Sw D1099 MV 1 2
Varistor Diode ALC Preset Fwd Bias
(to Xtal Filters)
D l l OO MA190 Si Diode SSB Xtal Filter Sw
D105 3
RX 2nd IF T/R Sw
D l 1 0 1 (CW-W)
(from Xtal Filters)
D 1 102 (SSB)
D1054
RX
3rd IF AM Filter D 1 103
AM Squelch Switch
Switch
D 1 1 04 HZ4 B3
Zener Diode RF AGC Threshold Set
Dl055
D 1 105 MA190 Si Diode
Non-FM Squelch Hang
D1056
RX 3rd IF SSB/CW
Timer
Ceramic Filter Sw
D l l 06 HZ3C1 Zener Diode
NB AGC Limiter
D 1 05 7
D 1 1 0 7 MA190 Si Diode
D1058
RX 3rd IF SSB/CW
D 1 108
TX RF OUT Switch
Filter Selector (SSB)
D l l 09 Demodulator FM
D1059
(CW-W)
Disable Switch
D1060
(CW-N)
(from TX 8V)
D106 1
RX 3rd IF AM Filter
Selector (AM)
XF 1001 XF-4 7M-203-0 1 Crystal Filter RX 1 st IF Filter
D1062
(FM)
XF1002 8 .2M20
" 2nd IF "
D106 3
CW-N Xtal Filter Sw
X F 1 003
XF8 2M-<i0 1-0 1 " (CW-N)
D1064
FM Demodulator
XF1004 XF8 .2M-272-0 1
Activator Switch
(SSB, CW-W)
D1065 1 SS 1 06
Schottky RX AGC Detector
Barrier Diode
CF1001 LF-H6 S
Ceramic Filter RX 3rd IF Filter (AM)
D1066
CF1002 CFJ44 5 K l 3
(SSB, CW)
D106 7
Forward Bias for AM
CF1 003 CFG4 5 5 E l
(FM)
Detector
D106 8
RX AM Detector
X l O O l HC-1 8/U
Crystal IF Width Oscillator
D1069
RX FM Noise Detector
86 70kHz
D1070 l SVSO
Varactor IF Width Frequency
Diode Control
D10 7 1 MA1 90 Si Diode
BFO Premixer Enable
Sw (SSB)
LOCA L U N I T
D1072
CW BFO and AF
Filter Sw (CW-W)
LOCA- NO MEN-
TYPE APPLICATION
D l 0 7 3
(CW-N)
TION CLATURE
D1074
BFO Premixer Enable
Q200 1 2SC4 5 8B NPN Si TR
TX
MIC Amp
Sw (CW)
Q2002
Dl075
N D4 8 7 R l-3R Ring Module
RX SSB, CW
Q2003 TX AF Amp (SSB/AM)
Demodulator
Q2004 SN16 9 1 3 P Mixer IC TX SSB Balanced
Dl076
MA190 Si Diode
Reverse Voltage
Modulator (also AM
Protector (SCAN Line)
Mod)
Dl077
RX SSB/AM AF
Q2005 2SC4 5 8 B NPN Si TR TX 1st IF Buffer Amp
Filter Sw (SSB)
Q2006 TX SSB PROC AF
Dl078
(AM)
Limiter Amp
Dl079
RX SSB/
AM
AF Filter
Q2007
TX
FM
IDC
Switch
Q2008 TX FM AF Amp
Dl080 RX
FM AF Buffer Sw
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