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Radio-Frequency Communications Principles
Navy Electricity and Electronics Training Series (NEETS) - Module 17
Pages i through ix





Navy Electricity and Electronics Training Series

[Go to TOC]

Module 1 - Introduction to Matter, Energy, and Direct Current


Distribution Statement A:  Approved for public release; distribution is unlimited.

Although the words "he," "him," and "his"  are  used  sparingly  in  this  course  to enhance          communication, they are not intended to be gender driven or to affront or discriminate against anyone.

Distribution Statement A:  Approved for public release; distribution is unlimited.


By enrolling in this self-study course, you have demonstrated a desire to improve yourself and the Navy. Remember, however, this self-study course is only one part the total Navy training program. Practical experience, schools, selected reading, and your desire to succeed are also necessary to successfully round out a fully meaningful training program.

Course Overview: To introduce the student to the subject Circuit Protection, Control, and Measurement who needs such a background in accomplishing daily work and/or in preparing for further study.

The Course: This self-study course is organized into subject matter areas, each containing learning objectives to help you determine what you should learn along with text and illustrations to help you understand the information. The subject matter reflects day-to-day requirements and experiences personnel in the rating or skill area. It also reflects guidance provided by Enlisted Community Managers (ECMs) and other senior personnel, technical references, instructions, etc., and either the occupational or naval standards, which are listed in the Manual Navy Enlisted Manpower Personnel Classifications and Occupational Standards, NAVPERS 18068.

The Questions: The Questions that appear in this course are designed to help you understand the material in the text.

NEETS Modules
- Matter, Energy, and Direct Current
- Alternating Current and Transformers
- Circuit Protection, Control, and Measurement
- Electrical Conductors, Wiring Techniques, and Schematic Reading
- Generators and Motors
- Electronic Emission, Tubes, and Power Supplies
- Solid-State Devices and Power Supplies
- Amplifiers
- Wave-Generation and Wave-Shaping Circuits
- Wave Propagation, Transmission Lines, and Antennas
- Microwave Principles
- Modulation Principles
- Introduction to Number Systems and Logic Circuits
- - Introduction to Microelectronics
- Principles of Synchros, Servos, and Gyros
- Introduction to Test Equipment
- Radio-Frequency Communications Principles
- Radar Principles
- The Technician's Handbook, Master Glossary
- Test Methods and Practices
- Introduction to Digital Computers
- Magnetic Recording
- Introduction to Fiber Optics
Note: Navy Electricity and Electronics Training Series (NEETS) content is U.S. Navy property in the public domain.

Value: In completing this course, you will improve your military and professional knowledge. Importantly, it can also help you study for the Navy-wide advancement in rate examination. If you are studying and discover a reference in the text to another publication for further information, look it up.

1998 Edition Prepared by

FCC(SW) James L. Hicks

Published by

Naval Education and Training Professional Development and Technology Center

NAVSUP Logistics Tracking Number


Sailor's Creed

"I am a United States Sailor. I will support and defend the Constitution the United States America and I will obey the orders those appointed over me.

I represent the fighting spirit the Navy and those who have gone before me to defend freedom and democracy around the world.

I proudly serve my country's Navy combat team with honor, courage and commitment.

I am committed to excellence and the fair treatment all."

Table of Contents

Chapter........................................................................................... Page

1.  Introduction to Radio-Frequency Communications  ...................... 1-1

2.  Introduction to Communications Theory  ...................................... 2-1

3.  Fundamental Systems Equipment  ............................................... 3-1

4.  Introduction to Satellite Communications  .................................... 4-1

5.  Intro to Miscellaneous Communications Systems and Equipment . 5-1


I.  .................................................................................................... AI-1

II.  .................................................................................................. AII-1

Index .. ...................................................................................... Index-1

Navy Electricity and Electronics Training Series>

The Navy Electricity and Electronics Training Series (NEETS) was developed for use by personnel in many electrical- and electronic-related Navy ratings. Written by, and with the advice , senior technicians in these ratings, this series provides beginners with fundamental electrical and electronic concepts through self-study. The presentation this series is not oriented to any specific rating structure, but is divided into modules containing related information organized into traditional paths instruction.

The series is designed to give small amounts information that can be easily digested before advancing further into the more complex material. For a student just becoming acquainted with electricity or electronics, it is highly recommended that the modules be studied in their suggested sequence. While there is a listing NEETS by module title, the following brief descriptions give a quick overview how the individual modules flow together.

Module 1, Introduction to Matter, Energy, and Direct Current, introduces The Course with a short history electricity and electronics and proceeds into the characteristics matter, energy, and direct current (dc). It also describes some the general safety precautions and first-aid procedures that should be common knowledge for a person working in the field electricity. Related safety hints are located throughout the rest the series, as well.

Module 2, Introduction to Alternating Current and Transformers, is an introduction to alternating current (ac) and transformers, including basic ac theory and fundamentals electromagnetism, inductance, capacitance, impedance, and transformers.

Module 3, Introduction to Circuit Protection, Control, and Measurement, encompasses circuit breakers, fuses, and current limiters used in circuit protection, as well as the theory and use meters as electrical measuring devices.

Module 4, Introduction to Electrical Conductors, Wiring Techniques, and Schematic Reading, presents conductor usage, insulation used as wire covering, splicing, termination wiring, soldering, and reading electrical wiring diagrams.

Module 5, Introduction to Generators and Motors, is an introduction to generators and motors, and covers the uses ac and dc generators and motors in the conversion electrical and mechanical energies.

Module 6, Introduction to Electronic EMIssion, Tubes, and Power Supplies, ties the first five modules together in an introduction to vacuum tubes and vacuum-tube power supplies.

Module 7, Introduction to Solid-State Devices and Power Supplies, is similar to module 6, but it is in reference to solid-state devices.

Module 8, Introduction to Amplifiers, covers amplifiers.

Module 9, Introduction to Wave-Generation and Wave-Shaping Circuits, discusses wave generation and wave-shaping circuits.

Module 10, Introduction to Wave Propagation, Transmission Lines, and Antennas, presents the characteristics wave propagation, transmission lines, and antennas.

Module 11, Microwave Principles, explains microwave oscillators, amplifiers, and waveguides.

Module 12, Modulation Principles, discusses the principles modulation.

Module 13, Introduction to Number Systems and Logic Circuits, presents the fundamental concepts number systems, Boolean algebra, and logic circuits, all which pertain to digital computers.

Module 14, Introduction to Microelectronics, covers microelectronics technology and miniature and microminiature circuit repair.

Module 15, Principles Synchros, Servos, and Gyros, provides the basic principles, operations, functions, and applications synchro, servo, and gyro mechanisms.

Module 16, Introduction to Test Equipment, is an introduction to some the more commonly used test equipment and their applications.

Module 17, Radio-Frequency Communications Principles, presents the fundamentals a radio- frequency communications system.

Module 18, Radar Principles, covers the fundamentals a radar system.

Module 19, The Technician's Handbook, is a handy reference commonly used general information, such as electrical and electronic formulas, color coding, and naval supply system data.

Module 20, Master Glossary, is the glossary terms for the series.

Module 21, Test Methods and Practices, describes basic test methods and practices.

Module 22, Introduction to Digital Computers, is an introduction to digital computers.

Module 23, Magnetic Recording, is an introduction to the use and maintenance magnetic recorders and the concepts recording on magnetic tape and disks.

Module 24, Introduction to Fiber Optics, is an introduction to fiber optics.

Embedded questions are inserted throughout each module, except for modules 19 and 20, which are reference books. If you have any difficulty in answering any The Questions, restudy the applicable section.

Although an attempt has been made to use simple language, various technical words and phrases have necessarily been included. Specific terms are defined in Module 20, Master Glossary.

Considerable emphasis has been placed on illustrations to provide a maximum amount information. In some instances, a knowledge basic algebra may be required.

Assignments are provided for each module, with the exceptions Module 19, The Technician's Handbook; and Module 20, Master Glossary. Course descriptions and ordering information are in NAVEDTRA 12061, Catalog Nonresident Training Courses.

Throughout the text this course and while using technical manuals associated with the equipment you will be working on, you will find the below notations at the end some paragraphs. The notations are used to emphasize that safety hazards exist and care must be taken or observed.


An operating procedure, practice, or condition, etc., which may result in injury or death if not carefully observed or followed.


An operating procedure, practice, or condition, etc., which may result in damage to equipment if not carefully observed or followed.


An operating procedure, practice, or condition, etc., which is essential to emphasize.

Instructions for Taking The Course


The text pages that you are to study are listed at the beginning each assignment. Study these pages carefully before attempting to answer The Questions. Pay close attention to tables and illustrations and read the learning objectives. The learning objectives state what you should be able to do after studying the material. Answering The Questions correctly helps you accomplish the objectives.

Selecting Your Answers

Read each question carefully, then select the BEST answer. You may refer freely to the text. The answers must be the result your own work and decisions. You are prohibited from referring to or copying the answers others and from giving answers to anyone else taking The Course.

Submitting Your Assignments

To have your assignments graded, you must be enrolled in The Course with the Nonresident Training Course Administration Branch at the Naval Education and Training Professional Development and Technology Center (NETPDTC). Following enrollment, there are two ways having your assignments graded: (1) use the Internet to submit your assignments as you complete them, or (2) send all the assignments at one time by mail to NETPDTC.

Grading on the Internet: Advantages to

Internet grading are:

• you may submit your answers as soon as you complete an assignment, and

• you get your results faster; usually by the next working day (approximately 24 hours).

In addition to receiving grade results for each assignment, you will receive course Completion Confirmation once you have completed all the assignments. To submit your assignment answers via the Internet, go to:


Grading by Mail: When you submit answer sheets by mail, send all your assignments at one time. Do NOT submit individual answer sheets for grading. Mail all your assignments in an envelope, which you either provide yourself or obtain from your nearest Educational Services Officer (ESO). Submit answer sheets to:

Commanding Officer NETPDTC N331


Answer Sheets: All courses include one "scannable" answer sheet for each assignment. These answer sheets are preprinted with your SSN, name, assignment number, and course number. Explanations for completing the answer sheets are on the answer sheet.

Do not use answer sheet reproductions: use only the original answer sheets that we provide - reproductions will not work with our scanning equipment and cannot be processed.

Follow the instructions for marking your answers on the answer sheet. Be sure that blocks

1, 2, and 3 are filled in correctly. This information is necessary for your course to be

properly processed and for you to receive credit for your work.

Completion Time

Courses must be completed within 12 months from the date enrollment. This includes time required to resubmit failed assignments.

Pass/Fail Assignment Procedures

If your overall course score is 3.2 or higher, you will pass The Course and will not be required to resubmit assignments. Once your assignments have been graded you will receive course Completion Confirmation.

If you receive less than a 3.2 on any assignment and your overall course score is below 3.2, you will be given the opportunity to resubmit failed assignments. You may resubmit failed assignments only once. Internet students will receive notification when they have failed an assignment--they may then resubmit failed assignments on the web site. Internet students may view and print results for failed assignments from the web site. Students who submit by mail will receive a failing result letter and a new answer sheet for resubmission each failed assignment.

Completion Confirmation

After successfully completing this course, you will receive a letter completion.


Errata are used to correct minor errors or delete obsolete information in a course. Errata may also be used to provide instructions to the student. If a course has an errata, it will be included as the first page(s) after the front cover. Errata for all courses can be accessed and viewed/downloaded at:


Student Feedback Questions

We value your suggestions, questions, and criticisms on our courses. If you would like to communicate with us regarding this course, we encourage you, if possible, to use e-mail. If you write or fax, please use a copy the Student Comment form that follows this page.

For subject matter questions:

E-mail: n315.products@cnet.navy.mil

Phone: Comm: (850) 452-1001, ext. 1728

DSN: 922-1001, ext. 1728

FAX: (850) 452-1370

(Do not fax answer sheets.) Address: Commanding Officer



For enrollment, shipping, grading, or completion letter questions

E-mail: fleetservices@cnet.navy.mil

Phone: Toll Free: 877-264-8583

Comm: (850) 452-1511/1181/1859

DSN: 922-1511/1181/1859

FAX: (850) 452-1370

(Do not fax answer sheets.) Address: Commanding Officer



Naval Reserve Retirement Credit

If you are a member the Naval Reserve, you will receive retirement points if you are authorized to receive them under current directives governing retirement Naval Reserve personnel. For Naval Reserve retirement, this course is evaluated at 5 points. (Refer to Administrative Procedures for Naval Reservists on Inactive Duty, BUPERSINST

1001.39, for more information about retirement points.)

Student Comments

Course Title:

NEETS Module 17

Radio-Frequency Communications Principles

NAVEDTRA: 14189 Date:

We need some information about you:

Rate/Rank and Name: SSN: Command/Unit

Street Address: City: State/FPO: Zip

Your comments, suggestions, etc.:

Privacy Act Statement: Under authority Title 5, USC 301, information regarding your military status is requested in processing your comments and in preparing a reply. This information will not be divulged without written authorization to anyone other than those within DOD for official use in determining performance.

NETPDTC 1550/41 (Rev 4-00)



Posted November 5, 2021

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