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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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tutor
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arsg10.exe
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ARSGDAT.4AC
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1992-10-04
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4KB
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168 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.
;
;
;
(4AC-1.1)
What is a sporadic-E condition?
C. Patches of dense ionization at E-layer height
*
(4AC-1.2)
What is the propagation condition called where scattered patches
of relatively dense ionization develops seasonally at E layer
heights?
D. Sporadic-E
*
(4AC-1.3)
In what region of the world is sporadic-E most prevalent?
A. The equatorial regions
*
(4AC-1.4)
On which amateur frequency band is extended distant propagation
effect of sporadic-E most often observed?
B. 6 meters
*
(4AC-1.5)
What appears to be the major cause of the sporadic-E condition?
A. Wind shear
*
(4AC-2.1)
What is a selective fading effect?
B. A fading effect caused by phase differences between radio
wave components of the same transmission, as experienced at the
receiving station
*
(4AC-2.2)
What is the propagation effect called when phase differences
between radio wave components of the same transmission are
experienced at the recovery station?
C. Selective fading
*
(4AC-2.3)
What is the major cause of selective fading?
D. Phase differences between radio wave components of the same
transmission, as experienced at the receiving station
*
(4AC-2.4)
Which emission modes suffer the most from selective fading?
B. FM and double sideband AM
*
(4AC-2.5)
How does the bandwidth of the transmitted signal affect
selective fading?
A. It is more pronounced at wide bandwidths
*
(4AC-3.1)
What effect does auroral activity have upon radio
communications?
D. CW signals have a fluttery tone
*
(4AC-3.2)
What is the cause of auroral activity?
C. The emission of charged particles from the sun
*
(4AC-3.3)
In the northern hemisphere, in which direction should a
directional antenna be pointed to take maximum advantage of
auroral propagation?
B. North
*
(4AC-3.4)
Where in the ionosphere does auroral activity occur?
D. At E-layer height
*
(4AC-3.5)
Which emission modes are best for auroral propagation?
A. CW and SSB
*
(4AC-4.1)
Why does the radio-path horizon distance exceed the geometric
horizon?
D. Radio waves may be bent
*
(4AC-4.2)
How much farther does the radio-path horizon distance exceed the
geometric horizon?
A. By approximately 1/3 the distance
*
(4AC-4.3)
To what distance is VHF propagation ordinarily limited?
B. Approximately 500 miles
*
(4AC-4.4)
What propagation condition is usually indicated when a VHF
signal is received from a station over 500 miles away?
C. Tropospheric ducting
*
(4AC-4.5)
What happens to a radio wave as it travels in space and collides
with other particles?
A. Kinetic energy is given up by the radio wave
*