Antenna Construction and Propagation of Radio Waves.

172 Pages·2008·1.88 MB·English

DOCUMENT RESUME
CL 041 763
ED 258 035
Antenna Construction and Propagation of Radio
TITLE
Waves.
Marine Corps Inst., Washington, DC.
INSTITUTION
REPORT NO
MCI-25.15g
PUB DATE
5 Dec 84
NOTE
173p.
PUB TYPE
Guides - Classroom Use - Materials tFor Learner)
(051)
EDRS PRICE
MF61/PC07 Plus Postage.
DESCRIPTORS
Adult Education; Behavioral Objectives; Continuing
Education; *Correspondence Study; Course
Descriptions; *Electronic Equipment; Individualized
Instruction; Learning Activities; Military Training;
*Radio; Site Selection; Study Guides; Technical
Education
*Antennas; *Radio Operators; Radio Waves
IDENTIFIERS
ABSTRACT
Developed as part of the Marine Corps Institute (MCI)
correspondence training program, this course on antenna construction
and propagation of radio waves is designed to provide communicators
with instructions in the selection and/or construction of the proper
antennas) for use with current field radio equipment. Introductory
materials include specific information for MCI students, a course
introduction, and a study guide (guidelines to complete the course).
The 11-hour course contains four study units. Each study unit begins
with a general objective. The study units are divided into numbered
work units, each presenting one or more specific objectives. Contents
of a work unit include a text and study questions/exercises. Answer
keys are found at the end of each study unit. At the end of the
course is a review lesson. Topics covered in the study units include
radio communications, propagation of radio waves, antennas, and site
selection and antenna grounding. Appendixes include discussions of
field expedient construction and Electromagnetic Compatibility
Analysis Center capabilities and services. (YLB)
* ** **
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* * * * * * * * * * * * * * * * * * * * * * * * **
*
Reproductions supplied by EDRS are the best that can be made
*
from the original document.
*
***********************************************************************
113. IIMIANTREINT OF ITNIDATION
NATIONAL INSTITUTE OP EDUCATION
EDUCATIONAL RESOURCES INFORMATION
CENTER IERICI
4Tr This document has been *Produced
received from the person of orgeourdion
imposing
; Mew changes hewn been made io smprove
I
reproduction quality
.
.
Pointe of va* or osmium" Misled on MO dom.
Meld do not oeceesenly represent °Medi Nit
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UNITED STATES MARINE CORPS
MOMS COOPS OISTOUTI. MAIMS SAIMMOS
SOX $775
AOUNSTON. VA. aims 0001
25.15g
5 Dec 1984
1.
ORIGIN
MCI course 25.15g. Antenna Construction and Propagation of Radio Waves*
has been prepared by the Marine Corps ins-Mute.
2.
APPLICABILITY
This course is for instructional purposes only.
'fedte61/
J. H. D. HOLLADAY
Lieutenant Colonel* U. S. Marine Corps
Deputy Director
3
ACKNOWLEDGMENT
The Marine Corps Institute, Marine Barracks, Washington, D.C. gratefully acknowledges
the important contributions provided by the following MCI personnel in developing and
publishing the revision of this course:
Course Developer
GySgt Anthony L. MILLER
Officer in Charge
Capt Nark S. MELGESON
Education Spec4alist
Ms. Glenda A. SEALE
Ms Monica L. NOELL
Course Editor
Wordprocessing Technician(s)
C. MARTIN
Sgt
R.
Cpl
. CULP
Pfc SIMMONS
LCp1 J. L. McCRART
Graphics Illustrator(s)
Sgt G. A. BOWMAN
Cpl R. I. FRANKNOUSER
The Marine Corps Institute gratefully acknowledges the assistance of Communication
Platoon, Communication Officer's School, MCDEC, Quantico, Va. in the validation of this course.
The Marine Corps Institute gratefully acknowledges the assistance of Senior Schools,
Marine Corps Communications-Electronics School, Marine Corps Air-Ground Combat Center, 29
Palms, Ca. in the formal review of this course.
MCIR24i-NRL
INFORMATION
FOR
STUDENTS
MCI
Welcome to the Marine Corps Institute training program.
Your interest in
self-improvement and increased professional competence is commendable.
Information is provided below to assist you in completing the course.
Please read this guidance before proceeding with your studies.
MATERIALS
I.
You should have all the materials listed in
Check your course materials.
In addition you should have an envelope to mail
the "Course Introduction."
your review lesson back to MCI for grading unless your review lesson answer
sheet is of the self-mailing type.
If your answer sheet is the pre-printed
type, check to see that your name, rank, and social security number are
Check closely, your MCI records are kept on a computer and any
correct.
discrepancy in the above information may cause your subsequent activity to go
You may correct the information directly on the answer sheet.
unrecorded.
If
you did not receive all your materials, notify your training NCO.
If you are
not attached to a Marine Corps unit, request them through the Hotline (autovon
288 -4115 or commercial 202-433-4175).
LESSON SUBMISSION
2.
The self-graded exercises contained in your course are not to be returned
Only the completed review lesson answer sheet should be mailed to
to MCI.
The answer sheet is to be completed and mailed only after you have
MCI.
The review lesson has
finished all of the study units in the course booklet.
been designed to prepare you for the final examination.
It is important that you provide the required information at the bottom of
your review lesson answer sheet if it does not have your name and address
In courses in which the work is submittel on blank paper or
printed on it.
printed forms, identify each sheet in the following manner:
DOE, John J. Sgt 332-11-9999
08.4g, Forward Observation
Review "Lesson
Military or office address
(RUC number, if available)
Submit your review lesson on the answer sheet and/or forms provided.
Complete all blocks and follow the directions on the answer sheet foc
Otherwise, your answer sheet may be delayed or lost.
mailing. If you have to
interrupt your studies for any reason and find that you cannot complete your
course in one year, you may request a single six month extension by contacting
your training NCO, at least one month prior to your course completion deadline
date.
If you are not attached to a Marine Corps unit you may make this
request by letter.
Your commanding officer is notified monthly of your status
through the monthly Unit Activity Report.
In the event of difficulty, contact
your training NCO or MCI immediately.
1
MAIL-TIME DELAY
3.
Presented below are the mail-time delays that you may experience between
the mailing of your review lesson and its return to you.
TURNAROUND
MCI PROCESSING
TOTAL NUMBER
MAIL TIME
TIME
DAYS
EAST COAST
WEST COAST
16
5
21
FPO NEW YORK
18
5
23
FPO SAN FRANCISCO
22 27
5
You may also experience a short delay in receiving your final examination
due to administrative screening requirld at MCI.
GRADING SYSTEM
4.
LESSONS
EXAMS
GRADE
PERCENT
MEANING
PERCENT
GRADE
A
EXCELLENT
94-100
94-100
A
ABOVE AVERAGE
86-93
B
86-93
B
AVERAGE
78-85 78-85
C
C
BELOW AVERAGE
70-77
65-77
0
0
FAILING
BELOW 70
BELOW 65
NL
F
You will receive a percentage grade for your review lesson and for the
final examination.
A review lesson which receives a score below 70 is given a
It must be resubmitted and PASSED before you will
grade of NL (no lesson).
The grade attained on the final exam is your course
receive an examination.
grade, unless you fail your first exam.
Those who fail their first exam will
be sent an alternate exam in which the highest grade possible is 65%.
Failure
of the alternate will result in failure of the course.
FINAL EXAMINATION
5.
When you pass your REVIEW LESSON, your examination
ACTIVE DUTY PERSONNEL:
will be mailed automatically to your commanding officer.
The administration
of MCI final examinations must be supervised by a commissioned or warrant
officer or a staff NCO.
OTHER PERSONNEL: Your examination may be administered and supervised by
your supervisor.
COMPLETION CERTIFICATE
6.
The completion certificate will be mailed to your commanding officer and
your official records will be updated automatically. For non Mariner, yovr
completion certificate is mailed to your supervisor.
2
RESERVE RETIREMENT CREDITS
7.
Reserve retirement credits are awarded to inactive duty personnel only.
Credits awarded for each course cre listel in the "Course Introduction."
Credits are only awarded upon successful completion of the course.
Reserve
retirement credits are not awarded for MCI study performed during drill
periods if credits are also awarded for drill attendance.
DISENROLLMENT
8.
Only your commanding officer can request your disenrollment from an MCI
However, an automatic disenrollment occurs if the course is not
course.
completed (including the final exam) by the time you reach the CCO (course
completion deadline) or the ACCD (adjusted course completion deadline) date.
This action will adversely affect the unit's completion rate.
ASSISTANCE
9.
Consult your training NCO if you have questions concerning course
Should he/she be unable to assist you, MCI is ready to help you
content.
Please use the Student Course Content Assistance
whenever you need it.
Request Form (IS1) -1) attached to the end of your course booklet or call one of
the AUTOVON telephone numbers listed below for the appropriate course writer
section.
PERSONNEL/ADMINISTRATION
288-3259
COMMUNICATIONS/ELECTRONICS/AVIATION
NBC/INTELLIGENCE
288-3604
INFANTRY
288-3611
ENGINEER/MOTOR TRANSPORT
288-2275
SUPPLY/FOOD SERVICES/FISCAL
288-2285
TANKS/ARTILLERY/INFANTRY WEAPONS REPAIR
LOGISTICS/EMBARKATION/MAINTENANCE MANAGEMENT/
ASSAULT AMPHIBIAN VEHICLES
288-2290
For administrative problems use the UAR or call the MCI HOTLINE:
288-4175.
For commercial phone lines, use area code 202 and prefix 433 instead of
288.
3
PREFACE
ANTENNA CONSTRUCTION AND PROPAGATION OF RADIO WAVES has been designed to provide
privates through gunnery sergeauts in occupational fields 25 and 28; a source of study on the
propagation of radio waves and the construction and repair of conventional and field expedient
antennas.
SOURCE MATERIALS
FM 24-18 Field Radio Techniques, July 1965
1N-06728A-15
Antenna-Soto, As-t236/GRC, September 1968
lams AS-2usi
TM-07505A-14 August 1972
14ZZ59
Qf, May 1974
Antenna
TM-07508A-14
na_qcwon
-292, May 1966
TM-11-5820-348-16
.
TM-11-666
Antennas and Radio rropapation, February 1953
COS-0733410,
Conventional and Field Expedient Antennas, 1981
COS-9328-A10
he'd Expedient Antennas and Radio wave 'Propagation
H0.9 HR.14
Sep TAO
Indio userttore -Handbook,
OH 10.3
Optrationsi support to the U. S. Marine Corps, Feb 1981
(CAC-CR-81-019
ANTENNA CONSTRUCTION AND PROPAGATION OF RADIO WAVES
Course Introduction
ANTENNA CONSTRUCTION AND PROPAGATION OF RADIO WAVES is designed to provide
communicators with instructions in the selection and/or construction of the proper antenna(s)
for use with current field radio equipment.
ADMINISTRATIVE INFORMATION
ORDER OF STUDIES
Study
Study Unit
Number
SukjeAliatter
How urS
Radio Communications
1 1
Propagation of Radio Wives
2 2
Antennas
3 3
4
Site Selection and Antenna Grounding
1
Appendix I
field Expedient Construction.
Required
NOTE:
reading for study unit #3.
Electromagnetic Compatbility analysis center
Appendix II
(ECAC) capabilities and services
REVIEW LESSON
2
FINAL EXAMINATION
2
TT
RESERVE RETIREMENT
CREDITS:
3
Supervised final examination witheu textbook or notes with a time
EXAMINATION:
limit of 2 hours.
MCI 25.15, Antenna ConstructionEllommIllondalgtojints.
MATERIALS:
Review lesson and answer sheet.
Students who successfully complete this course are permitted to keep
RETURN OF MATERIALS:
the course materials.
Students disenrolled for inactivity or at the request of their
commanding officer will return all course materials.
HOW TO TAKE THIS COURSE
This course contains 4 study units. Each study unit begins with a general objective
which is a statement of what you should learn from that study unit.
The study units are
Read the
divided into numbered .fork units, each presenting one or more specific objectives.
objective(s) and then the work unit text.
At the end of the work unit text are study
questions which you should be able to answer without referring to the text of the work unit.
After answering the questions, check you answers against the correct ones listed at the end of
the study unit.
If you miss any of the questions, you should restudy the text of the work
unit until you understand the correct response. When you have mastered one study unit, move
After you have completed all study units, complete the review lesson and take
on to the next.
it to your training officer or NCO for mailing to MCI. MCI will mail the final examination to
your training officer or NCO when you pass the review lesson.
ii
TABLE OF CONTENTS
tut
Work Unit
Preface
Source materials
Course introduction
Table of contents
Study guide
RADIO COMUNICATIONS
Study Unit 1.
Basic components of a radio set
1.1
1-1
Radio waves
1-2
1-2
Carrier waves and modulatio6
1-4
1-3
Summary Review
1-6
Answers to Study Unit #1 Exercises
1-7
Study Unit 2. PROPAGATION OF RADIO WAVES
The atamphere
2-1
2-1
Ground waves, sky waves, and skim zone
2-2 2-3
The layers of the ionospere
2-5
2-3
Maximum usable frequency (NW) an4 lowest usable frequency (LUF)
2-4
2-8
Fading
2-11
2-5
Effects of frequency on wave propagation
2-6
2-12
Summary Review
2-13
Answers to Study Unit #2 Exercises
2-13
ANTENNAS
Study Unit 3.
Functions of an antenna and antenna radl4tion
3-1
3.1
3-2
Antenna polarization
3-4
3-3
Coventional field antennas
3-8
Field expedient antennas 3-4 3-1/
Transmission lines
3-5
3-26
Summary Review
3-30
Answers to Study Unit 03 Exercises
3-30
Study Unit 4. SITE SELECTION AND ANTENNA GROUNDING
4-1
Requirlments for site selection
4-1
4-4
4-2
Electronic warfare antenna siting
4-3
4-5
Grounds and counterpoise
4-8
Summary Review
4-8
Answers to Study Unit /4 Exercises
Review Lesson
R-1
Appendix I
Appendix II
iii