Chapter 1 Introduction To Radio-Frequency Communications

• Electrical
• Teletypewriter
• System Introduction
• Figure 1-1.—System Subdivision
• Figure 1-2.—Communications System Pictorial View
• Figure 1-4.—Radio Transmitting Set.
• Assembly
• Reference Designations
• Figure 1-7.—Reference Designations
• Extremely Low-Frequency Communications
• Medium-Frequency Communications
• High-Frequency Communications
• Very-High-Frequency And Above Communications
• Communications Fundamentals
• Switched Networks
• Automatic Voice Network (Autovon)
• Navy-Only Networks
• Summary
• Answers To Questions Q1. Through Q19.

Chapter 2 Introduction To Communications Theory

• Transmitter Fundamentals
• Amplitude Modulated Transmitter
• Frequency Modulated Transmitter
• Harmonics
• Frequency Multiplication
• Single-Sideband Transmitter
• Applications
• Receiver Fundamentals
• Receiver Characteristics
• Superheterodyne Receiver
• Frequency Modulated Receiver
• Advantages
• Single-Sideband
• Figure 2-11.—Comparison Of Am And Ssb Transmitted Signals
• Receiver Control Circuits
• Manual Volume Control (Mvc)
• Automatic Gain/Volume Control (Agc/Avc)
• Circuitry
• Transistor Amplifier Gain
• Forward And Reverse Agc
• Delayed Automatic Gain Control
• Beat-Frequency Oscillator
• Figure 2-21.—Squelch Circuit
• Audio Tone
• Crystal Filters
• Automatic Frequency Control
• Figure 2-27.—Automatic Frequency Control (Phase Discriminator).
• Frequency Synthesis
• Audio Reproduction Devices
• Figure 2-31.—Electromagnetic Speaker
• Summary
• Summary
• Summary
• Summary
• Summary
• Answers To Questions Q1. Through Q26

Chapter 3 Fundamental Systems Equipment

• Radio Set Control Unit
• Transfer Switchboards
• Transmitters
• Radio Transmitting Set
• Radio Frequency Amplifier
• Power Supplies
• Radio Transmitter
• Figure 3-8.—Radio Transmitter Unit.
• Receivers
• Antenna Distribution Systems
• Figure 3-12.—Complex Distribution System
• Receive Multicoupler
• Transmit Multicouplers
• Teletypewriter And Facsimile Equipment
• Figure 3-18.—Mark And Space Signals
• Teletypewriter Message Transmission
• Modulation Rate
• Dc Circuits
• Radio Teletypewriter Systems
• Audio Frequency Tone Shift
• Radio-Frequency-Carrier Shift
• Rfcs Send System
• Teletypewriter Sets
• Communication Patching Panels
• Cryptographic Equipment.
• Figure 3-24.—Rfcs Receive System
• Figure 3-26.—Typical Lissajous Monitoring Patterns
• Cryptographic Equipment
• Multiplexing Equipment
• Figure 3-28.—Components Of A Sine Wave.
• Figure 3-29.—Fundamental Principle Of Time-Division Multiplexing
• Frequency Division
• Figure 3-31.—Block Diagram Of Modulator Units
• Facsimile
• Tempest
• Transmission Security
• Shipboard Communications Systems Quality Monitoring (Qmcs)
• Electromagnetic Interference (Emi)
• Electromagnetic Radiation
• Electromagnetic Radiation
• Figure 3-35.—Typical Rf Radiation Hazard Warning Signs
• Summary
• Summary
• Summary
• Answers To Questions Q1. Through Q39.
• Answers To Questions Q1. Through Q39.

Chapter 4 Introduction To Satellite Communications

• Defense Communications Satellite Program (Dcsp)
• Description Of Communications Satellite System
• Angle Of Inclination
• Special Types Of Inclined Orbits
• Satellite Characteristics
• Satellite Power Sources
• Satellite Orientation
• Earth Terminal Characteristics
• Figure 4-11.—Forty-Foot Antenna And Pedestal
• Telemetry Equipment
• Shipboard Receive-Only Equipment Systems
• Satellite Acquisition And Tracking
• Tracking
• Role Of Satellite Communications
• Satellite Limitations
• Future Satellite Communications
• Figure 4-16.—Dscs Phase Iii Satellite As It Appears In Space
• Summary
• Summary
• Answers To Questions Q1. Through Q13

Chapter 5 Introduction To Miscellaneous Communications Systems And Equipment

• Medium Frequency And Below
• Figure 5-1.—Doubled-Up Transmitter Block Diagram
• Figure 5-2.—Simplified Vlf Transmitting Antenna
• Figure 5-4a.—Triatic Type Antenna
• Receive Equipment
• Figure 5-6.—Receiver Block Diagram
• Microwave
• Tropospheric Scatter System
• Figure 5-9.—Mobile 30-Foot Tropospheric-Scanner Antenna
• Figure 5-10.—Ntds Equipment Grouping.
• Ntds Data Transmission Subsystems
• Figure 5-13.—Intersystem Communications Employment.
• Portable Equipment
• Operational Equipment
• Figure 5-16.—Typical Vhf/Uhf Backpack Transceiver.
• Lasers
• Communications Applications
• Summary
• Answers To Questions Q1. Through Q12

Appendix I Glossary

• Appendix I Glossary
• Appendix I Glossary
• Appendix I Glossary
• Appendix I Glossary
• Appendix I Glossary

Appendix Ii Reference List

• Appendix Ii Reference List

Module 17  Index

• Module 17  Index
• Module 17  Index
• Module 17  Index

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