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Manuals
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sunair Manuals
Transceiver
GSB-900
Operation and maintenance manual
sunair GSB-900 Operation And Maintenance Manual
Hf/ssb synthesized
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Table Of Contents
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
List of Illustrations
List of Tables
General Information
Transceiver Description
Front Panel
Receiver/Exciter
Filter Module
Power Supply
RF Power Amplifier
Major Assembly Locations
Specifications
Equipment Supplied
Optional Equipment
Installation
Unpacking and Inspection
Reshipping
Base Station Installation
Shock Mount Assembly and Details
Vehicular Installations
Marine Installation
Rack Mounted Installations
Antennas and Ground Systems
Whip Antenna
Narrow Band 50 Ohm Antennas
Random Length Non Resonant Antennas
Doublet Antenna Diagram
Long Wire Antenna Diagram
Power Requirements
Broad Band 50 Ohm Antennas
Operation from All AC Power Sources
AC Operation under High Line Voltage Conditions
115 V AC Power Cord Schematic
230 V AC Power Cord Schematic
Operation from DC Power Source
Power Supply Wiring - 115V or 230V AC Inputs
Power Supply - 132V or 265V AC Inputs
DC Inverter Connections to Power Supply Terminal Strip
Installation Checkout
DC Power Connector Schematic
Mating Connectors to the Unit and Accessories
Operation
Front Panel Operating Controls
Product View
Rear Apron Fuses and Connectors
Operating the Unit into a 50 Ohm Antenna
Operating the Unit with the GCU-910A Antenna Coupler
Automatic Antenna Tuner Controls
KW Control Unit
Theory of Operation
Synthesizer
Overall Block Diagram
Spectrum Generator
Low Digit Generator
20 Mhz Reference Generator
17 Mhz Reference Generator
21 Mhz Reference Generator
Voltage Controlled Oscillator
Mixer and Pulse Generator
Preset Counter
Preset Generator
Translator
Output Divider Circuitry
Error Cancelling
VFO and 21 Mhz Reference Amplifiers
VHF Divider
2Nd lo Circuitry
100.75 Mhz Mixer
Output Mixer and Broadband Amplifier
Broadband Amplifier
Prescaler
Preset Counters
100 Khz Carry Generator
Vco
Phase Detector
Oscillators
Output Buffer Amplifier
Translator Buffer Amplifier
Logic Switching
Synthesizer Mother Board
Mechanical
LO Blanker Circuitry
Receiver
VCO Filter Assembly
VHF Mixer Board
Broadcast Filter
Synthesizer Block Diagram and Details
RF Amplifier
1St lo Amplifier and Balanced Mixer
VHF Filter and Bilateral Amplifier
If/Filter Board
2Nd lo Amplifier and Balance Mixer
Diode Gates and if Filters
Audio Board
Integrated Circuit if Amplifier
Fixed if Amplifier and AGC Detector
"S" Meter Amplifier
Exciter
Speaker Driver
RF Gain Control Amplifier
AM Detector
Sideband Generator Board
Audio and Balanced Modulator
Automatic Carrier Control (ACC)
CW Tone Oscillator
VSWR and Voltage ALC Amplifiers
Transmit if Amplifier
Transmit Filter Selection
Transmit Gain Control Amplifier
VHF Mixer
Receiver/Exciter Mother Board
Low Pass Filter and Balanced Mixer
Transmit Bilateral Amplifier and Filter
Predriver, Driver and Power Amplifier
Current ALC Detector
VSWR ALC Detector
28VDC Regulator
12VDC and 5VDC Regulators
Regulator Transistor Locations
DC Inverter
Transceiver Block Diagram
DC Inverter Step Start Assembly
Regulator Schematic Diagram
Filter Module
RF Detector Board
DC Relay Control Circuit
Motor Control Board
Filter Module Block Diagram
Voltage ALC Detector
ACC Detector
Output Detector
Key Line
Meter Panel
Reflected Power Detector
Maintenance and Repair
Cover Removal
Performance Test
Test Equipment
Front Panel Control Test Positions
Power Supply Testing
Front Panel and Main Frame Testing
Receiver Test
Transmitter Test
Synthesizer Troubleshooting
Frequency Coding
Synthesizer Subassembly Testing and Alignment Procedures
Spectrum Generator Testing and Alignment Procedures
Low Digit Generator Testing
Translator Testing
VHF Divider Testing
VCO Testing
Receiver/Exciter Board Alignment
Removal of Filter Module
Front Panel Servicing and Removal
Power Supply Removal
RF Power Amplifier Removal and Servicing
Synthesizer Mechanical Assembly Diagram
Printed Circuit Boards
Logic Notes
Unit Top View and Table of Assemblies
Schematic Diagrams
Accessories
Phone Patch Option
Manual Phone Patch Schematic Diagram
Receiver Protector
Audio Remote Control
Troubleshooting the Audio Remote Control
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Table of
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Table of Contents
Troubleshooting
Synthesizer troubleshooting
98
Troubleshooting the audio remote control
216
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