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ARSGDAT.4AD
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1992-10-04
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8KB
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317 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.
;
;
;
(4AD-1.1)
What is a frequency standard?
B. A device used to produce a highly accurate reference
frequency
*
(4AD-1.2)
What is a frequency-marker generator?
A. A device used to produce a highly accurate reference
frequency
*
(4AD-1.3)
How is a frequency-marker generator used?
B. To provide reference points on a receiver dial
*
(4AD-1.4)
What is a frequency counter?
A. A frequency measuring device
*
(4AD-1.5)
How is a frequency counter used?
D. To measure frequency
*
(4AD-1.6)
What is the most the actual transmitter frequency could differ
from a reading of 146,520,000-Hertz on a frequency counter with
a time base accuracy of +/-1.0 ppm?
C. 146.52 Hz
*
(4AD-1.7)
What is the most the actual transmitter frequency could differ
from a reading of 146,520,000-Hertz on a frequency counter with
a time base accuracy of +/-0.1 ppm?
A. 14.652 Hz
*
(4AD-1.8)
What is the most the actual transmitter frequency could differ
from a reading of 146,520,000-Hertz on a frequency counter with
a time base accuracy of +/-10 ppm?
D. 1465.20 Hz
*
(4AD-1.9)
What is the most the actual transmitter frequency could differ
from a reading of 432,100,000-Hertz on a frequency counter with
a time base accuracy of +/-1.0 ppm?
D. 432.1 Hz
*
(4AD-1.10)
What is the most the actual transmit frequency could differ from
a reading of 432,100,000-Hertz on a frequency counter with a
time base accuracy of +/-0.1 ppm?
A. 43.21 Hz
*
(4AD-1.11)
What is the most the actual transmit frequency could differ from
a reading of 432,100,000-Hertz on a frequency counter with a
time base accuracy of +/-10 ppm?
C. 4321 Hz
*
(4AD-2.1)
What is a dip-meter?
C. A variable LC oscillator with metered feedback current
*
(4AD-2.2)
Why is a dip-meter used by many amateur operators?
D. It can give an indication of the resonant frequency of a
circuit
*
(4AD-2.3)
How does a dip-meter function?
B. Power coupled from an oscillator causes a decrease in metered
current
*
(4AD-2.4)
What two ways could a dip-meter be used in an amateur station?
D. To measure resonant frequency of antenna traps and to measure
a tuned circuit resonant frequency
*
(4AD-2.5)
What types of coupling occur between a dip-meter and a tuned
circuit being checked?
B. Inductive and capacitive
*
(4AD-2.6)
How tight should the dip-meter be coupled with the tuned circuit
being checked?
A. As loosely as possible, for best accuracy
*
(4AD-2.7)
What happens in a dip-meter when it is too tightly coupled with
the tuned circuit being checked?
B. A less accurate reading results
*
(4AD-3.1)
What factors limit the accuracy, frequency response, and
stability of an oscilloscope?
A. Sweep oscillator quality and deflection amplifier bandwidth
*
(4AD-3.2)
What factors limit the accuracy, frequency response, and
stability of a D'Arsonval movement type meter?
D. Calibration, mechanical tolerance and coil impedance
*
(4AD-3.3)
What factors limit the accuracy, frequency response, and
stability of a frequency counter?
B. Time base accuracy, speed of the logic and time base
stability
*
(4AD-3.4)
How can the frequency response of an oscilloscope be improved?
D. By increasing the horizontal sweep rate and the vertical
amplifier frequency response
*
(4AD-3.5)
How can the accuracy of a frequency counter be improved?
C. By increasing the accuracy of the time base
*
(4AD-4.1)
What is the condition called which occurs when the signals of
two transmitters in close proximity mix together in one or both
of their final amplifiers, and unwanted signals at the sum and
difference frequencies of the original transmissions are
generated?
D. Intermodulation interference
*
(4AD-4.2)
How does intermodulation interference between two transmitters
usually occur?
B. When they are in close proximity and the signals mix in one
or both of their final amplifiers
*
(4AD-4.3)
How can intermodulation interference between two transmitters in
close proximity often be reduced or eliminated?
B. By installing a terminated circulator or ferrite isolator in
the feed line to the transmitter and duplexer
*
(4AD-4.4)
What can occur when a non-linear amplifier is used with an
emission J3E transmitter?
D. Distortion
*
(4AD-4.5)
How can even-order harmonics be reduced or prevented in
transmitter amplifier design?
B. By using a push-pull amplifier
*
(4AD-5.1)
What is receiver desensitizing?
C. A reduction in receiver sensitivity because of a strong
signal on a nearby frequency
*
(4AD-5.2)
What is the term used to refer to the reduction of receiver gain
caused by the signals of a nearby station transmitting in the
same frequency band?
A. Desensitizing
*
(4AD-5.3)
What is the term used to refer to a reduction in receiver
sensitivity caused by unwanted high-level adjacent channel
signals?
C. Desensitizing
*
(4AD-5.4)
What causes receiver desensitizing?
C. The presence of a strong signal on a nearby frequency
*
(4AD-5.5)
How can receiver desensitizing be reduced?
A. Ensure good RF shielding between the transmitter and receiver
*
(4AD-6.1)
What is cross-modulation interference?
D. Modulation from an unwanted signal is heard in addition to
the desired signal
*
(4AD-6.2)
What is the term used to refer to the condition where the
signals from a very strong station are superimposed on other
signals being received?
B. Cross-modulation interference
*
(4AD-6.3)
How can cross-modulation in a receiver be reduced?
A. By installing a filter at the receiver
*
(4AD-6.4)
What is the result of cross-modulation?
C. The modulation of an unwanted signal is heard on the desired
signal
*
(4AD-7.1)
What is the capture effect?
C. The loudest signal received is the only demodulated signal
*
(4AD-7.2)
What is the term used to refer to the reception blockage of one
particular emission F3E signal by another emission F3E signal?
C. Capture effect
*
(4AD-7.3)
With which emission type is the capture-effect most pronounced?
A. FM
*