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 - 14189_33
ANSWERS TO QUESTIONS Q1. THROUGH Q19.
CHAPTER 2 INTRODUCTION TO COMMUNICATIONS THEORY
TRANSMITTER FUNDAMENTALS
AMPLITUDE MODULATED TRANSMITTER
FREQUENCY MODULATED TRANSMITTER
Harmonics
Frequency Multiplication - 14189_40
SINGLE-SIDEBAND TRANSMITTER
Applications
RECEIVER FUNDAMENTALS
RECEIVER CHARACTERISTICS
SUPERHETERODYNE RECEIVER
Frequency Modulated Receiver
ADVANTAGES - 14189_47
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 - 14189_66
SUMMARY - 14189_67
SUMMARY - 14189_68
SUMMARY - 14189_69
SUMMARY - 14189_70
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 - 14189_112
ELECTROMAGNETIC RADIATION - 14189_113
Figure 3-35.Typical rf radiation hazard warning signs
SUMMARY - 14189_115
SUMMARY - 14189_116
SUMMARY - 14189_117
ANSWERS TO QUESTIONS Q1. THROUGH Q39. - 14189_118
ANSWERS TO QUESTIONS Q1. THROUGH Q39. - 14189_119
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 - 14189_139
SUMMARY - 14189_140
ANSWERS TO QUESTIONS Q1. THROUGH Q13 - 14189_141
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 - 14189_161
ANSWERS TO QUESTIONS Q1. THROUGH Q12
APPENDIX I GLOSSARY - 14189_163
APPENDIX I GLOSSARY - 14189_164
APPENDIX I GLOSSARY - 14189_165
APPENDIX I GLOSSARY - 14189_166
APPENDIX I GLOSSARY - 14189_167
APPENDIX I GLOSSARY - 14189_168
APPENDIX II REFERENCE LIST - 14189_169
APPENDIX II REFERENCE LIST - 14189_170
MODULE 17 INDEX - 14189_171
MODULE 17 INDEX - 14189_172
MODULE 17 INDEX - 14189_173
MODULE 17 INDEX - 14189_174
Assignment Questions - 14189_175
Assignment Questions - 14189_177
Assignment Questions - 14189_178
Assignment Questions - 14189_179
Assignment Questions - 14189_180
Assignment Questions - 14189_181
Assignment Questions - 14189_182
Assignment Questions - 14189_183
Assignment Questions - 14189_184
Assignment Questions - 14189_185
Assignment Questions - 14189_186
Assignment Questions - 14189_187
Assignment Questions - 14189_188
Assignment Questions - 14189_189
Assignment Questions - 14189_190
Assignment Questions - 14189_191
Assignment Questions - 14189_192
Assignment Questions - 14189_193
Assignment Questions - 14189_194
Assignment Questions - 14189_195
Assignment Questions - 14189_196
Assignment Questions - 14189_197
Assignment Questions - 14189_198
Assignment Questions - 14189_199
Assignment Questions - 14189_200
Assignment Questions - 14189_201
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 - 14189_33
ANSWERS TO QUESTIONS Q1. THROUGH Q19.
CHAPTER 2 INTRODUCTION TO COMMUNICATIONS THEORY
TRANSMITTER FUNDAMENTALS
AMPLITUDE MODULATED TRANSMITTER
FREQUENCY MODULATED TRANSMITTER
Harmonics
Frequency Multiplication - 14189_40
SINGLE-SIDEBAND TRANSMITTER
Applications
RECEIVER FUNDAMENTALS
RECEIVER CHARACTERISTICS
SUPERHETERODYNE RECEIVER
Frequency Modulated Receiver
ADVANTAGES - 14189_47
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 - 14189_66
SUMMARY - 14189_67
SUMMARY - 14189_68
SUMMARY - 14189_69
SUMMARY - 14189_70
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 - 14189_112
ELECTROMAGNETIC RADIATION - 14189_113
Figure 3-35.Typical rf radiation hazard warning signs
SUMMARY - 14189_115
SUMMARY - 14189_116
SUMMARY - 14189_117
ANSWERS TO QUESTIONS Q1. THROUGH Q39. - 14189_118
ANSWERS TO QUESTIONS Q1. THROUGH Q39. - 14189_119
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 - 14189_139
SUMMARY - 14189_140
ANSWERS TO QUESTIONS Q1. THROUGH Q13 - 14189_141
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 - 14189_161
ANSWERS TO QUESTIONS Q1. THROUGH Q12
APPENDIX I GLOSSARY - 14189_163
APPENDIX I GLOSSARY - 14189_164
APPENDIX I GLOSSARY - 14189_165
APPENDIX I GLOSSARY - 14189_166
APPENDIX I GLOSSARY - 14189_167
APPENDIX I GLOSSARY - 14189_168
APPENDIX II REFERENCE LIST - 14189_169
APPENDIX II REFERENCE LIST - 14189_170
MODULE 17 INDEX - 14189_171
MODULE 17 INDEX - 14189_172
MODULE 17 INDEX - 14189_173
MODULE 17 INDEX - 14189_174
Assignment Questions - 14189_175
Assignment Questions - 14189_177
Assignment Questions - 14189_178
Assignment Questions - 14189_179
Assignment Questions - 14189_180
Assignment Questions - 14189_181
Assignment Questions - 14189_182
Assignment Questions - 14189_183
Assignment Questions - 14189_184
Assignment Questions - 14189_185
Assignment Questions - 14189_186
Assignment Questions - 14189_187
Assignment Questions - 14189_188
Assignment Questions - 14189_189
Assignment Questions - 14189_190
Assignment Questions - 14189_191
Assignment Questions - 14189_192
Assignment Questions - 14189_193
Assignment Questions - 14189_194
Assignment Questions - 14189_195
Assignment Questions - 14189_196
Assignment Questions - 14189_197
Assignment Questions - 14189_198
Assignment Questions - 14189_199
Assignment Questions - 14189_200
Assignment Questions - 14189_201
