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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.3AC
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1992-10-04
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5KB
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240 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.
;
;
;
(3AC-1-1.1)
What is the ionosphere?
A. That part of the upper atmosphere where enough ions and free
electrons exist to affect radio-wave propagation
*
(3AC-1-1.2)
What is the region of the outer atmosphere that makes
long-distance radio communications possible as a result of
bending of radio waves?
D. Ionosphere
*
(3AC-1-1.3)
What type of solar radiation is most responsible for ionization
in the outer atmosphere?
C. Ultraviolet
*
(3AC-1-2.1)
Which ionospheric layer limits daytime radio communications in
the 80- meter band to short distances?
A. D layer
*
(3AC-1-2.2)
What is the lowest ionospheric layer?
B. The D layer
*
(3AC-1-3.1)
What is the lowest region of the ionosphere that is useful for
long- distance radio wave propagation?
B. The E layer
*
(3AC-1-4.1)
Which layer of the ionosphere is mainly responsible for
long-distance sky-wave radio communications?
D. F2 layer
*
(3AC-1-4.2)
What are the two distinct sub-layers of the F layer of the
ionosphere during the daytime?
B. F1 and F2
*
(3AC-1-4.3)
Which two daytime ionospheric layers combine into one layer at
night?
C. F1 and F2
*
(3AC-2.1)
Which layer of the ionosphere is most responsible for absorption
of radio signals during daylight hours?
D. The D layer
*
(3AC-2.2)
When is ionospheric absorption most pronounced?
B. When radio waves enter the D layer at low angles
*
(3AC-2.3)
During daylight hours, what effect does the D layer of the
ionosphere have on 80-meter radio waves?
A. The D layer absorbs the signals
*
(3AC-2.4)
What causes ionospheric absorption of radio waves?
B. D layer ionization
*
(3AC-3.1)
What is usually the condition of the ionosphere just before
sunrise?
D. Ionization is at a minimum
*
(3AC-3.2)
At what time of day does maximum ionization of the ionosphere
occur?
C. Midday
*
(3AC-3.3)
Minimum ionization of the ionosphere occurs daily at what time?
A. Shortly before dawn
*
(3AC-3.4)
When is E layer ionization at a maximum?
B. Midday
*
(3AC-4.1)
What is the name for the highest radio frequency that will be
refracted back to earth?
D. Critical frequency
*
(3AC-4.2)
What causes the maximum usable frequency to vary?
C. The amount of ultraviolet and other types of radiation
received from the sun
*
(3AC-4.3)
What does the term maximum usable frequency refer to?
A. The maximum frequency that allows a radio signal to reach its
destination in a single hop
*
(3AC-5.1)
When two stations are within each other's skip zone on the
frequency being used, what mode of propagation would it be
desirable to use?
C. Scatter-mode propagation
*
(3AC-5.2)
You are in contact with a distant station and are operating at a
frequency close to the maximum usable frequency. If the received
signals are weak and somewhat distorted, what type of
propagation are you probably experiencing?
C. Backscatter propagation
*
(3AC-6.1)
What is the transmission path of a wave that travels directly
from the transmitting antenna to the receiving antenna called?
A. Line of sight
*
(3AC-6.2)
How are VHF signals within the range of the visible horizon
propagated?
B. By direct wave
*
(3AC-7.1)
Ducting occurs in which region of the atmosphere?
C. Troposphere
*
(3AC-7.2)
What effect does tropospheric bending have on 2-meter radio
waves?
A. It increases the distance over which they can be transmitted
*
(3AC-7.3)
What atmospheric phenomenon causes tropospheric ducting of radio
waves?
D. A temperature inversion
*
(3AC-7.4)
Tropospheric ducting occurs as a result of what phenomenon?
A. A temperature inversion
*
(3AC-7.5)
What atmospheric phenomenon causes VHF radio waves to be
propagated several hundred miles through stable air masses over
oceans?
B. A widespread temperature inversion
*
(3AC-7.6)
In what frequency range does tropospheric ducting occur most
often?
D. VHF
*