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Precision Software Appli…tions Silver Collection 1
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Precision Software Applications Silver Collection Volume One (PSM) (1993).iso
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arsg10.exe
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ARSGDAT.3AI
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1992-10-04
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8KB
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335 lines
;/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\:
; :
; AMATEUR RADIO STUDY GUIDE v1.00 :
; :
; Copyright (c) 1992 David Drzyzga - All Rights Reserved :
; :
; Based on a program coded in BASIC by Russ Revels :
; :
;/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\:
;
; You can include comments an the file anywhere you want
; just like these comments. You cannot put a comment in
; the middle of a line though.
;
; When modifying this file, there are several things you
; must be aware of:
;
; -> Any line of text in this file cannot exceed 65 characters!
; this is the 65th character^
;
; No harm will be done, but nothing over 65 characters will
; be read by the program.
;
; -> Do not make questions more than 20 lines long, or you
; will receive an 'out of memory' error when you execute
; the program.
;
; -> You can add or delete questions as you please, just be
; sure to follow the format of the existing questions.
;
;
;
(3AI-1-1.1)
What antenna type best strengthens signals from a particular
direction while attenuating those from other directions?
A. A beam antenna
*
(3AI-1-1.2)
What is a directional antenna?
D. An antenna that radiates more strongly in some directions
than others
*
(3AI-1-1.3)
What is a Yagi antenna?
C. Half-wavelength linear driven element(s) with parasitically
excited parallel linear elements
*
(3AI-1-1.4)
What is the general configuration of the radiating elements of a
horizontally-polarized Yagi?
A. Two or more straight, parallel elements arranged in the same
horizontal plane
*
(3AI-1-1.5)
What type of parasitic beam antenna uses two or more straight
metal- tubing elements arranged physically parallel to each
other?
C. A Yagi antenna
*
(3AI-1-1.6)
How many directly-driven elements does a Yagi antenna have?
B. One
*
(3AI-1-1.7)
What is a parasitic beam antenna?
A. An antenna where the director and reflector elements receive
their RF excitation by induction or radiation from the driven
element
*
(3AI-1-2.1)
What is a cubical quad antenna?
B. Two or more parallel four-sided wire loops, each
approximately one electrical wavelength long
*
(3AI-1-2.2)
What kind of antenna array is composed of a square full-wave
closed loop driven element with parallel parasitic element(s)?
B. Cubical quad
*
(3AI-1-2.3)
Approximately how long is one side of the driven element of a
cubical quad antenna?
D. 1/4 electrical wavelength
*
(3AI-1-2.4)
Approximately how long is the wire in the driven element of a
cubical quad antenna?
C. 1 electrical wavelength
*
(3AI-1-3.1)
What is a delta loop antenna?
A. A variation of the cubical quad antenna, with triangular
elements
*
(3AI-2-1.1)
To what does the term horizontal as applied to wave polarization
refer?
B. The electric lines of force in the radio wave are parallel to
the earth's surface
*
(3AI-2-1.2)
What electromagnetic wave polarization does a cubical quad
antenna have when the feed point is in the center of a
horizontal side?
C. Horizontal
*
(3AI-2-1.3)
What electromagnetic wave polarization does a cubical quad
antenna have when all sides are at 45 degrees to the earth's
surface and the feed point is at the bottom corner?
C. Horizontal
*
(3AI-2-2.1)
What is the polarization of electromagnetic waves radiated from
a half- wavelength antenna perpendicular to the earth's surface?
D. Vertically polarized waves
*
(3AI-2-2.2)
What is the electromagnetic wave polarization of most man-made
electrical noise radiation in the HF-VHF spectrum?
D. Vertical
*
(3AI-2-2.3)
To what does the term vertical as applied to wave polarization
refer?
C. The electric lines of force in the radio wave are
perpendicular to the earth's surface
*
(3AI-2-2.4)
What electromagnetic wave polarization does a cubical quad
antenna have when the feed point is in the center of a vertical
side?
D. Vertical
*
(3AI-2-2.5)
What electromagnetic wave polarization does a cubical quad
antenna have when all sides are at 45 degrees to the earth's
surface and the feed point is at a side corner?
D. Vertical
*
(3AI-3-1.1)
What is meant by the term standing wave ratio?
D. The ratio of maximum to minimum voltages on a feed line
*
(3AI-3-1.2)
What is standing wave ratio a measure of?
A. The ratio of maximum to minimum voltage on a feed line
*
(3AI-3-2.1)
What is meant by the term forward power?
A. The power traveling from the transmitter to the antenna
*
(3AI-3-2.2)
What is meant by the term reflected power?
B. The power returned to the transmitter from the antenna
*
(3AI-3-3.1)
What happens to the power loss in an unbalanced feed line as the
standing wave ratio increases?
D. It increases
*
(3AI-3-3.2)
What type of feed line is best suited to operating at a high
standing wave ratio?
C. Parallel open-wire line
*
(3AI-3-3.3)
What happens to RF energy not delivered to the antenna by a
lossy coaxial cable?
C. Some of it is dissipated as heat in the conductors and
dielectric
*
(3AI-4-1.1)
What is a balanced line?
D. Feed line with neither conductor connected to ground
*
(3AI-4-1.2)
What is an unbalanced line?
C. Feed line with one conductor connected to ground
*
(3AI-4-2.1)
What is a balanced antenna?
B. An antenna (or a driven element in an array) that is
symmetrical about the feed point
*
(3AI-4-2.2)
What is an unbalanced antenna?
A. An antenna (or a driven element in an array) that is not
symmetrical about the feed point
*
(3AI-4-3.1)
What device can be installed on a balanced antenna so that it
can be fed through a coaxial cable?
A. A balun
*
(3AI-4-3.2)
What is a balun?
B. A device that may be installed on a balanced antenna so that
it may be fed with unbalanced feed line
*
(3AI-5-1.1)
List the following types of feed line in order of increasing
attenuation per 100 feet of line (list the line with the lowest
attenuation first): RG-8, RG-58, RG-174 and open-wire line.
C. open-wire line, RG-8, RG-58, RG-174
*
(3AI-5-1.2)
You have installed a tower 150 feet from your radio shack, and
have a 6-meter Yagi antenna on top. Which of the following feed
lines should you choose to feed this antenna: RG-8, RG-58, RG-59
or RG-174?
A. RG-8
*
(3AI-5-2.1)
You have a 200-foot coil of RG-58 coaxial cable attached to your
antenna, but the antenna is only 50 feet from your radio. To
minimize feedline loss, what should you do with the excess
cable?
C. Cut off the excess cable
*
(3AI-5-2.2)
How does feed-line length affect signal loss?
B. As length increases, signal loss increases
*
(3AI-5-3.1)
What is the general relationship between frequencies passing
through a feed line and the losses in the feed line?
B. Loss increases with increasing frequency
*
(3AI-5-3.2)
As the operating frequency decreases, what happens to conductor
losses in a feed line?
A. The losses decrease
*
(3AI-5-3.3)
As the operating frequency increases, what happens to conductor
losses in a feed line?
B. The losses increase
*
(3AI-6-1.1)
You are using open-wire feed line in your Amateur Radio station.
Why should you ensure that no one can come in contact with the
feed line while you are transmitting?
D. Because high RF voltages can be present on open-wire feed
line
*
(3AI-6-2.1)
How can you minimize exposure to radio frequency energy from
your transmitting antennas?
C. Mount the antennas where no one can come near them
*