Antenna Construction & Propagation of Radio Waves, 5-1. Military Curriculum Materials for

137 Pages·2007·3.3 MB·English

DOCUMENT RESUME
CE 034 074
ED 222 691
Radio Waves,
Antenna Construction & Propagation of
TITLE
Vocational and
5-1. Military Curriculum Materials for
Technical Education,
Marine Corps, Washington, D.C.; Ohio State Univ.,
INSTITUTION
Vocational
Columbus. National Center for Research in
Education.
Office of Education (DHEW), Washington, D.C.
SPONS AGENCY
PUB DATE
78
NOTE
139p.
Learner)
Guides - Classroom Use - Materials (For
PUB TYPE
(051)
MF01/PC06 Plus Postage.
EDRS PRICE
*Electricity; Military Personnel; Military Training;
DESCRIPTORS
Education;
Postsecondary Education; *Radio; Secondary
*Technical Education
*Antennas; Military Curriculum Project; *Radio Waves;
IDENTIFIERS
Wave Propagation
ABSTRACT
materials consist
These military-developed curriculum
dealing with antenna
of five individualized, self-pacld chapters
in the
construction and propagation of radio waves. Covered
electricity;
individual lessons are the following topics: basic
antennas,
antenna transmission-line fundamentals; quarter-wave
long-wire antennas
half-wave antennAs, and associated radio patterns;
propagation. Each lesson
and antenna propagation; and radio wave
contains reading assignments and review exercises.
(MN)
***********************************************************************
be made
Reproductions supplied by EDRS are the best that can
from the original document.
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NATIONAk INSTITUTE OF EDUCATION
"PERMISSION TO REPRODUCE THIS
UCATIONAL RESOURCES tNFORMAMON
MATERIAL HAS BEEN GRANTED BY
CENTER (ERIC)
Thie document hes been Nproduced es
organiution
tecenned from the puson or
odokuting it.
Improve
or A
LI Minor changes how been made to
repoduction filfertfY.
&co
Ponns of view or opinions IWO in this
CATIONAL RESOURCES
TO THE
officio! NIE
TAM do not necessarily represent
INFORMATION CENTER (ERIC)."
portion or poky.
MILITARY CURRICULUM MATERIALS
materials in this course
The military-developed curriculum
for Research in
package ware selected by the National Center
Project for dissem-
Vocational Education Military Curriculum
Coordination Centers and
ination to the six regional Curriculum
The purpose of
other instructional materials agencies.
curriculum materials
disseminating these courses was to make
vocational
developed by the military more accessible to
educators in the civilian setting.
evaluated by project
The course materials %ere aoguired
prepared for
staff and practitioners in the field, and
Materials which were specific to the nilitary
dissemination.
materials were either omitted or appro-
were deleted, copyrighted
These course packages contain
val for their use %es obtained.
adapted to support
curriculum resource materials which can be
development.
vocational instruction and curriculum
Military Curriculum
Materials for
Vocational and
The National Center
Technical Education
Mission Statement
--=.7"."37 ,
. .
Information and Field
The National Center for Research in
Services Division
Vocational Education's mission is to increase
the ability of diverse agencies, institutions,
and organizations to solve educational prob-
lems relating to individual career planning,
The Nation:II Center for Research
preparation, and progression. The National
in Vocctional Education
Center fulfills its mission by:
Generating knowledge through research
Developing educational programs and
products
Evaluating individual program needs
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Installing educational programs and
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Operating information systems and
services
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training programs
FOR FURTHER INFORMATION ABOUT
Military Curriculum Materials
WRITE OR CALL
Program Information Office
The National Center for Research in Vocational
Education
The Ohio State University
1960 Kenny Road, Columbus, Ohio 43210
Telephone: [phone] or Toll Free 800/
4
848.4815 within the continental U.S.
5
:
(except Ohio)
Military
How Can These
What Materials
Curriculum Materials
Materials Be Obtained?
Are Available?
Dissemination Is
.
.
a
:j
""
'...
r. ,
..t
.
.
" ba...3.411A.Uarilk.11:1A4.441
Contact the Curriculum Coordination Center
One hundred twenty courses on microfiche
an activity to incease the accessibility of
in your region for information on obtaining
(thirteen in paper form) and descriptions of
military.developed curriculum materials to
materials (e.g., availability and cost). They
each have been provided to the vocational
vocational and technical educators.
will respond to your request directly or refer
Curriculum Coordination Centers and other
you to an instructional materials agency
instructional materials agencies for dissemi-
This project, funded by the U.S. Office of
closer to you.
nation.
Education, includes the identification and
acquisition of curriculum materials in print
include programmed
materials
Course
form from the Coast Guard, Air Force,
CURRICULUM COORDINATION CEN FERS
instruction, curriculum outlines, instructor
Army, Marine Corps and Navy.
guides, student workbooks and technical
NORTHWEST
EAST CENTRAL
manuals.
Access to military curriculum materijk: is
William Daniels
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provided through a "Joint Memorandm of
Director
Director
The 120 courses represent the following
Understanding" between the U.S. Office of
Building 17
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sixteen vocational subject areas:
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deemed applicable to vocational and tech-
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nical education are selected for dissemination.
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The number of courses and the subject areas
Director
Wesley E. Budke, Ph.D., Director
Director
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1776 University Ave.
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Trenton, NJ 08625
technical education are identified and selected
Shirley A. Chase, Ph.D.
808/948.7834
609/292.6562
for dissemination.
Project Director
7
Correspondence Course 5-1
ANNTENNA CONSTRUCTION AND PROPAGATION OF RADIO WAVES
Table of Contents
Page 1
Course Description
Page 3
Lesson Assignments and Questions
Antenna Construction and Propagation of
MC1
Radio Waves
25.15b
Page 26
Chapter 1 - Basic Electricity
Page 36
Chapter 2 - Antenna and Transmission Line
Fundamentals
Page 54
Chapter 3 - Quarter-Wave, Half-Wave
Antennas and Associated Radiation
Patterns
Page 79
Chapter 4 - Long-Wire Antennas and Antenna
Installation
Page 112
Chapter 5 - Radio Wave Propagation
Corresponduce Course
5-1
PROPAGATION
ANTENNA CONSTRUCTION AND
-
/
OF RADIO ,WAVES
..-
(4....."
Occupational Arm:
Developed by;
Communications
United States Marine Corps
Cos:
Print Pages:
Development and
Review Dates
1131
April 1975
Availability:
Military Curriculum Project, The Center
for Vocational Education, 1960 Kenny
Rd., Columbus, OH 43210
Suggested Background:
None
Tweet Audiences:
-
Grades 10-adult
Organization of Materials:
Student lesson book with assignments and review exercises; text readings
Type of Instruction:
Individualized, selfpaced
Average
No. of Pages:
Type of Materials:
Completion Time:
Antenna Construction and Propagation of Radio Waves
Flexible
10
Basic Electricity
Lesion 1
Flexible
18
Antenna and Transmission Line Fundamentals
Lesson 2
Ouarter-Wave, Half-Wave Antennas and
Lesson 3
Flexible
25
Associated Radiation Patterns
Flexible
38
Long-Wire Antennas and Antenna Propagation
Lesson 4
Flexible
20
Radio Wave Propagation
Lesson 5
19
Student Lesson Book
,
Supplemontary Materials Required:
None
9
Expires July 1, 1978
WI VOCAIIPW MOM
cern'
14 FMK, %IMO' %/WV t., Hr.!
INNIIM10
Course Description:
This course is designed to provide the studs% with the fundamentals of electricity, antenna construction, and wave propagation. It provides the theory
beckground for using wave propagation in communication. The course consists of five lessons.
has an introduction to electricity, and covers the composition of matter, conductors and insulators, basic
Basic Electrici
Lesson I
laws, electric current, electromotive force, resistance, magnets, the nature of magnetism, and elec .ric symbols.
Antenna and Transmission Line Fundamentals discusses the electromagnetic field, antenna theory, radiation, graphs,
Lessan 2
polarization, antenna input impedance, transmission line theory and the types of transmission line.
QuarterWave, half-Wave Antennas and Associated Radiation Patterns contains two sections. Section I describes whip
Lesson 3
(Marconi), ground plane, bent, folded-top, top-loaded, and tower radiated antennas. Section II discusses Her% ground
affected radiation patterns, single wire antennas, folded dipole, coaxial, conical and microwave antennas, and multielement arrays.
Long-Wire Antennas and Antenna installation contains two sections. Section I describes the general characteristics of long-wire
Lesson 4
antennas, harmonically operated antennas in free space, end feeding long-wire antennas, resonant and nonresonant antennas,
beverage or wave antennas, V antennas, half-rhombic antennas, and rhombic antennas. Section II covers site selection for
Installation, safety precautions, grounds and counterpoises, orientation, profiles, and field expedient methods.
Radio Wave Propagation contains three sections. Section I discusses general propagation factors. frequency spectrum, the
Lesson 5
atmosphere, and wave bending. Section II discusses general ground wave propagation. composition and characteristics of
ground wave propagation, and tropospheric propagation. Section III discusses general sky wave propagation. the ionsphere,
ionsphere characteristics, transmission paths, and frequency prediction.
Each lesson contains reading assignments and review exercises, but objectives and answers to the exercises are not given. The ;our se is designed for student
self-study. It can be used as a sub-unit in electrical communications.
-
larnigIn
1. 0
Al'ilr4WVERSSI
3
UNITED STATES MARINE CORPS
MARINC CORPS INSTITUTE. MANNIC SARRACKS
25.15b
SOS 1773
WASHINGTON. D.C. 20013
-.......2...
ANTENNA CONSTRUCTION AND PROPAGATION OF RADIO WAVES
Lesson 1
Basic Electricity
STUDY ASSIGNMENT: Information for MCI Students.
Course Introduction.
MCI 25.15b, Antenna Construction and Prooa ation of Radio Waves chap I.
WRITTEN ASSIGNMENT:
Multiple Choice: Select the ONE answer which BEST completes the statement or answers
A.
the question. After the corresponding number on the answer sheet, blacken the appropriate
box.
1 point each
Value:
1. A compound will retain its characteristics after it has been subdivided into
protons.
c.
atoms.
a.
electrons.
molecules.
b.
d.
The atomic nucleus is composed of
2.
neutrons and protons.
c.
atoms and molecules.
a.
protons and electrons.
neutrons and electrons.
d.
b.
What prevents the electrons from being drawn toward the nucleus?
3.
a Electrical repulsion
c. Atomic weight
Centripetal force
d.
Centrifugal force
b.
4. The atom is the smallest particle of
a proton.
c.
a, a molecule.
an electron.
d.
an element.
b.
An atom is said to be ionized if it has gained or lost one or more of its
5.
neutrons.
c.
protons.
a.
positrons.
d.
electrons.
b.
6. When an atom is excited, free electrons are liberated from the
central planetary orbit.
c.
nucleus.
a.
outer planetary orbit.
d.
inner planetary orbit.
b.
Current flow is caused by the movement of
7.
molecules.
c.
free electrons.
a.
protons.
d.
atoms.
b.
8. A good conductor is
c.
dry wood.
glass.
a.
d. aluminum
rubber.
b.
lsn 1; p.
1
11
If
9. A good insulator is
mica.
c.
copper
a.
aluminum.
d.
b. brass
rubbing a comb with a woolen cloth.
Assume that you have generated a static charge by
10.
cloth has
If the comb is negatively charged, the woolen
lost protons.
c.
lost electrons.
a.
gained protons.
d.
gained electrons.
b.
11.
According to the law of like and unlike charges, the protons within the nucleus
of the
atom must
absorb electrons.
a.
repel each other.
c.
neutralize each other.
b.
attract each other.
d.
What Is the force of attraction or repulsion If one
12. Two charged bodies are 1 inch apart.
body has a charge of 2 coulombs and the other, a charge of 3 coulombs?
a.
5 newtons
1 newton
C.
1.5 newtons
6 newtons
b.
d.
What is the force of attraction or repulsion if the distance be-
13. Refer to question 12.
tween the two charged bodies is increased to 2 inches?
c. 5 newtons
a.
1 newton
6 newtons
d.
1.5 newtons
b.
14. The field of force between charged bodies is called
a magnetic field.
a neutral field.
c.
a.
an artificial field.
d.
an electrostatic field.
b.
in the nucleus.
Electrons are held in orbit by the attraction of the
15.
positrons
c.
protons
a.
molecules
d.
neutrons
b.
What is the practical unit for measuring an electrical charge?
16.
c.
Coulomb
a. Ohm
d. Ampere
b.
Volt
What is the direction of the electric field between positive and negative cha:ges?
17.
Positive to positive
c.
Positive to negative
a.
Negative to negative
d.
Negative to positive
b.
is from
18. The direction of electron flow in a conductor
positive to positive.
c.
positive to negative.
a.
negative to negative.
d.
negative to positive.
b.
Unit current flow is expressed in
19.
ohms.
c.
amperes.
a.
newtons.
d.
volts.
b.
in a conductor.
Identify the force that produces current flow
20
Electromotive force
c.
Electrostatic force
a.
Magnetic force
d.
Artificial force
b.
flow is called a(an)
21. The unit of measure for the opposition to current
c. volt.
a.
coulomb.
b. amp.
ohm.
d.
25.15
lain 1; p. 2
1 e