Night Owl 6/Night Owl's Shareware - PDSI-006 - Night Owl Corp (1990).iso/035a/tec20.zip/TEC8.DAT

Text File | 1991-11-20 | 12KB | 317 lines

259H-2-1.2 B 5-9   FM has sidebands.   Only unmodulated|test transmissions do not have side-|bands
What emission does not have sidebands resulting from modulation?
A. AM phone
B. Test
C. FM phone
D. RTTY
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260H-2-2.1 C 5-9   Good old CW, A1A
What is the FCC emission designator for a Morse code telegraphy
signal produced by switching the transmitter output on and off?
A. Test
B. AM phone
C. CW
D. RTTY
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261H-2-2.2 A 5-9   Telegraphy using amplitude|(on and off) modulation
What is CW?
A. Morse code telegraphy using amplitude modulation
B. Morse code telegraphy using frequency modulation
C. Morse code telegraphy using phase modulation
D. Morse code telegraphy using pulse modulation
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262H-2-3.1 B 9-21  Frequency-shift-keyed telegraphy
What is RTTY?
A. Amplitude-keyed telegraphy
B. Frequency-shift-keyed telegraphy
C. Frequency-modulated telephony
D. Phase-modulated telephony
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263H-2-3.2 A 9-21  RTTY
What is the emission designation for telegraphy by frequency
shift keying without the use of a modulating tone?
A. RTTY
B. MCW
C. CW
D. Sideband phone
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264H-2-4.1 B 9-41  MCW
What emission type results when an on/off keyed audio tone is
applied to the microphone input of an FM transmitter?
A. RTTY
B. MCW
C. CW
D. Sideband phone
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265H-2-4.2 D 9-4   Telegraphy using an audio tone|fed into an FM transmitter
What is tone-modulated international Morse code telegraphy?
A. Telephony produced by audio fed into an FM transmitter
B. Telegraphy produced by an on/off keyed audio tone fed into
   an CW transmitter
C. Telegraphy produced by on/off keying of the carrier amplitude
D. Telegraphy produced by an on/off keyed audio tone fed into
   an FM transmitter
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266H-2-5.1 A 9-41  Telegraphy using audio tones
What is the emission designated as "MCW"?
A. Frequency-modulated telegraphy using audio tones
B. Frequency-modulated telephony
C. Frequency-modulated facsimile using audio tones
D. Phase-modulated television
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267H-2-5.2 B 9-41  Type of modulation of the main carrier
In an ITU emission designator like A1A, what does the first
symbol describe?
A. The nature of the signal modulating the main carrier
B. The type of modulation of the main carrier
C. The speed of the radiotelegraph transmission
D. The type of the information to be transmitted
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268H-2-5.3 C 9-41  MCW
What emission type results when an on-off keyed audio oscillator
is connected to the microphone jack of an FM phone transmitter?
A. SS
B. RTTY
C. MCW
D. Image
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269H-2-6.1 A 9-41  Nature of modulating signal
In an ITU emission designator like F3B, what does the second
symbol describe?
A. The nature of the signal modulating the main carrier
B. The type of modulation of the main carrier
C. The type of the information to be transmitted
D. The frequency modulation index of a carrier
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270H-2-6.2 B 9-41  Audio tones from a terminal|node controller
How would you transmit packet using an FM 2-meter transceiver?
A. Use your telegraph key to interrupt the carrier wave
B. Modulate your FM transmitter with audio tones from a terminal
   node controller
C. Use your mike for telephony
D. Use your touch-tone (DTMF) key pad to signal in Morse code
*
271H-2-7.1 D 9-41  FM phone
What type of emission results when speaking into the microphone
of a 2-meter FM handheld transceiver?
A. Amplitude-modulated phone
B. Code telegraphy
C. An unmodulated carrier wave
D. Frequency-modulated phone
*
272H-2-7.2 B 9-41  FM phone
What emission type do most 2-meter FM transmitters transmit?
A. Interrupted pure carrier waves
B. Frequency-modulated phone
C. Single-sideband voice emissions
D. Amplitude-modulated carrier waves
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273H-2-8.1 C 8-18  I would say keeping away from|open electrical circuits and |fire protection
What is the most important consideration when installing a
10-meter dipole inside an attic?
A. It will exhibit a low angle of radiation
B. The dipole must always be run horizontally polarized
C. It will not be covered by insulation to prevent fire and
   high enough to prevent being touched during transmission
D. Dipoles usually don't work in attics
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274H-2-8.2 D 9-41  Phase modulation produces|indirect FM modulation
Which type of transmitter will produce a frequency modulated
carrier wave?
A. A CW transmitter
B. An amplitude-modulation transmitter
C. A single-sideband transmitter
D. A phase-modulated transmitter
*
275H-3.1   A 9-41  Radio Frequency carrier
What is the term used to describe a constant-amplitude
radio-frequency signal?
A. An RF carrier
B. An AF carrier
C. A sideband carrier
D. A subcarrier
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276H-3.2   B 9-41  Radio Frequency carrier
What is another name for an unmodulated radio-frequency
signal?
A. An AF carrier
B. An RF carrier
C. A sideband carrier
D. A subcarrier
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277H-4.1   C 9-41  The FM capture effect and the high   |signal-to-noise ratio above threshold|make FM good for local communication
What characteristic makes FM telephony especially well-suited
for local VHF/UHF radio communications?
A. Good audio fidelity and intelligibility under weak-signal
   conditions
B. Better rejection of multipath distortion than the AM modes
C. Good audio fidelity and high signal-to-noise ratio above a
   certain signal amplitude threshold
D. Better carrier frequency stability than the AM modes
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278H-5.1   D 5-9   A reactance modulator produces|phase modulation
What emission is produced by a transmitter using a reactance
modulator?
A. CW
B. Unmodulated carrier
C. Single-sideband, suppressed-carrier phone
D. Phase-modulated phone
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279H-5.2   C 5-9   Phase modulation is called indirect FM
What other emission does phase modulation most resemble?
A. Amplitude modulation
B. Pulse modulation
C. Frequency modulation
D. Single-sideband modulation
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280H-6.1   D 9-41  SSB occupies half the bandwidth of AM
Many communications receivers have several IF filters that
can be selected by the operator. Why do these filters have
different bandwidths?
A. Because some ham bands are wider than others
B. Because different bandwidths help increase the receiver
   sensitivity
C. Because different bandwidths improve S-meter readings
D. Because some emission types occupy a wider frequency
   range than others
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281H-6.2   C 9-41  FM tends to be the widest and CW the|narrowest.   RTTY at a low baud rate|would be narrower that SSB.
List the following signals in order of increasing bandwidth
(narrowest signal first): CW, FM voice, RTTY, SSB voice?
A. RTTY, CW, SSB voice, FM voice
B. CW, FM voice, RTTY, SSB voice
C. CW, RTTY, SSB voice, FM voice
D. CW, SSB voice, RTTY, FM voice
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282H-7-1.1 D 5-10  Amplitude of the modulating signal
To what is the deviation of an FM transmission proportional?
A. Only the frequency of the audio modulating signal
B. The frequency and the amplitude of the audio modulating
   signal
C. The duty cycle of the audio modulating signal
D. Only the amplitude of the audio modulating signal
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283H-7-2.1 B 5-10  Over-deviation of an FM transmitter  |will cause repeater drop-out and out-|of-channel emissions (splatter)
What is the result of over-deviation in an FM transmitter?
A. Increased transmitter power consumption
B. Out-of-channel emissions (splatter)
C. Increased transmitter range
D. Inadequate carrier suppression
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284H-7-2.2 C 9-20  Over-modulation of a transmitter|causes splatter,  out-of-channel|emissions that can cause interference
What is splatter?
A. Interference to adjacent signals caused by excessive
   transmitter keying speeds
B. Interference to adjacent signals caused by improper
   transmitter neutralization
C. Interference to adjacent signals caused by over-
   modulation of a transmitter
D. Interference to adjacent signals caused by parasitic
   oscillations at the antenna
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285I-1-1.1 A 7-19  A directional antenna like |a beam, strengthens signals|from a particular direction
What antenna type best strengthens signals from a particular
direction while attenuating those from other directions?
A. A beam antenna
B. An isotropic antenna
C. A monopole antenna
D. A vertical antenna
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286I-1-1.2 D 7-19  A directional antenna is an antenna|that radiates more strongly in some|directions than others, like a beam
What is a directional antenna?
A. An antenna whose parasitic elements are all constructed to
   be directors
B. An antenna that radiates in direct line-of-sight propagation,
   but not sky-wave or skip propagation
C. An antenna permanently mounted so as to radiate in only one
   direction
D. An antenna that radiates more strongly in some directions
   than others
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287I-1-1.3 C 7-19  A Yagi antenna is a beam antenna that|has one or more parasitic element(s) |like director(s) and/or a reflector
What is a Yagi antenna?
A. Half-wavelength elements stacked vertically and excited in
   phase
B. Quarter-wavelength elements arranged horizontally and
   excited out of phase
C. Half-wavelength linear driven element(s) with parasitically
   excited parallel linear elements
D. Quarter-wavelength, triangular loop elements
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288I-1-1.4 A 7-24  A horizontally polarized Yagi has  |two or more straight elements that |are parallel to the earth's surface
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
B. Vertically stacked square or circular loops arranged in
   parallel horizontal planes
C. Two or more wire loops arranged in parallel vertical
   planes
D. A vertical radiator arranged in the center of an effective
   RF ground plane
*
289I-1-1.5 C 7-19  A Yagi antenna has two or more|straight elements that are ar-|ranged parallel to  each other
What type of parasitic beam antenna uses two or more straight
metal-tubing elements arranged physically parallel to each
other?
A. A delta loop antenna
B. A quad antenna
C. A Yagi antenna
D. A Zepp antenna
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290I-1-1.6 B 7-19  A driven element is the element that |the feed line connects to and a Yagi |must have at least one driven element
How many directly driven elements does a Yagi antenna
have?
A. None; they are all parasitic
B. One
C. Two
D. All elements are directly driven
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291I-1-1.7 A 7-25  In a parasitic beam, the director and|reflector elements are excited by RF |radiation or induction
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
B. An antenna where wave traps are used to assure magnetic
   coupling among the elements
C. An antenna where all elements are driven by direct
   connection to the feed line
D. An antenna where the driven element receives its RF
   excitation by induction or radiation from the directors
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292I-1-2.1 B 7-27  Quad means four, four-sided loops|Each loop is about one wavelength|in circumference
What is a cubical quad antenna?
A. Four parallel metal tubes, each approximately  1/2 electrical
   wavelength long
B. Two or more parallel four-sided wire loops, each approximately
   one electrical wavelength long
C. A vertical conductor 1/4 electrical wavelength high, fed at
   the bottom
D. A center-fed wire 1/2 electrical wavelength long
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293I-1-2.2 B 7-27  Quad means four, a four-sided loop|(a square) with parallel parasitic|element(s) forming a Cubic shape
What kind of antenna array is composed of a square full-wave
closed loop driven element with parallel parasitic element(s)?
A. Delta loop
B. Cubical quad
C. Dual rhombic
D. Stacked Yagi
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294I-1-2.3 D 7-27  Each loop is about one wavelength|in circumference (long), or about|¼ electrical wavelength on a side
Approximately how long is one side of the driven element of
 a cubical quad antenna?
A. 2 electrical wavelengths
B. 1 electrical wavelength
C. 1/2 electrical wavelength
D. 1/4 electrical wavelength
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295I-1-2.4 C 7-27  A Cubical Quad is an antenna with|four-sided loops,  each about one|wavelength long(in circumference)
Approximately how long is the wire in the driven element of
 a cubical quad antenna?
A. 1/4 electrical wavelength
B. 1/2 electrical wavelength
C. 1 electrical wavelength
D. 2 electrical wavelengths
*