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Yaesu Manuals
Transceiver
FT-757GX II
Operating manual
Yaesu FT-757GX Operating Manual
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Also See for FT-757GX
:
Supplement manual
(97 pages)
,
Operating manual
(72 pages)
,
Technical supplement
(70 pages)
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Table Of Contents
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Contents
Table of Contents
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Table of Contents
Contents
Introduction
Product View
Errata for the FT-757GX Operating Manual
First Printing Only: Key Plug Requirements
First and Second Printings: QSK Linear Amplifier Connections
Schematic Diagram Correction: R269 on the RF Unit
Soldering and Desoldering Technique
Notes on Use of CMOS Components
Insertion of Parts on Circuit Boards
Basic Soldering Practice
Examples of Poor Soldering Practice
Soldering to Terminal Posts
Typical Part Failures, Causes and Symptoms
Performance Improvement Modifications
QSK Keying Stability
IOOW PA Unit
RF Unit
CW Filter Isolation
CAT System Serial Interface Data Manual
EXT CNTL Pinout
Data Timing Format (4800 Bits/Second)
Programming
Command Byte Codes
Outer Cover Removal
RF and Local Unit Access
Service and Alignment
FT-757SX (10 W) Underside of Heatsink
Alignment Equipment
FT-757GX Underside of Heatsink
Chassis Top View
Chassis Bottom View
Alignment
Local Unit
2Nd Local Oscillator Frequency
FM/AM Carrier Frequency
Chassis Top View: Local Unit Adjustment Locations
Main PLL (PLL-2) VCC
IF Shift Zero Point Set
VOX Gain Preset
SSB Carrier Point Check
FM Modulation
RF Unit: Receiver Circuits
Chassis Bottom View: RF Unit RX Adjustment Locations
RF Unit: Transmitter Circuits
Chassis Bottom View: RF Unit TX Adjustment Locations
LPF Unit: Directional CM Coupler Balance
PA Unit: Idling Current
Semiconductor Locations
Chassis Bottom View: RF Unit
Chassis Top View: Local Unit
Inside Front Panel
Signal Paths: SSB
Signal Paths: CW
Signal Paths: am
Signal Paths: FM
Component Applications
Main Chassis
LPF Unit
Display Unit
Dial Unit
100W PA Unit
10W Pa
Keyer Unit
FP-757HD Schematic Diagram
FP-757GX Schematic Diagram
Connection Diagram FT-757
RF Unit Parts Layout (Component Side)
RF Unit IC Voltage Chart
RF Unit Parts Layout (Solder Side)
RF Unit Voltage Chart
RF Unit Schematic Diagram
Local Unit Parts Layout (Component Side)
Local Unit Parts Layout (Solder Side)
Local Unit Schematic Diagram
LPF Unit Parts Layout
Component Side
Solder Side
Display Unit Parts Layout
Display Unit F2558000 (No. 4Xxx)
Display Unit Voltage Chart
Dial Unit Parts Layout
Dial Unit F2559000 (No. 5Xxx)
100W PA Unit Parts Layout
100W PA Unit Dial Unit F2554000B (No. 6Xxx)
100W PA Unit Voltage Chart (DC Volts)
PA Unit IC Voltage Chart (DC Volts)
10W PA Unit Parts Layout
10W PA Unit F2555000A (No. 7Xxx)
Keyer Unit Parts Layout
Keyer Unit Voltage Charts (DC Volts)
Keyer Unit F2560000C (No. 80Xx)
Switch Unit A, B
Keyer Control Unit
FT-757GX Parts List
FP-757GX Parts List
FP-757HD Parts List
Local Unit IC Voltage Chart
Local Unit Voltage Chart (DC Volts)
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Errata for the Ft-757Gx Operating Manual
3
Cat System Serial Interface Data Manual
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