E2 - OPERATING PROCEDURES [5 Exam Questions - 5 Groups] Flashcards
What is the direction of an ascending pass for an amateur satellite?
A. From west to east
B. From east to west
C. From south to north
D. From north to south
C. From south to north
What is the direction of a descending pass for an amateur satellite?
A. From north to south
B. From west to east
C. From east to west
D. From south to north
A. From north to south
What is the orbital period of an Earth satellite?
A. The point of maximum height of a satellite’s orbit
B. The point of minimum height of a satellite’s orbit
C. The time it takes for a satellite to complete one revolution around the Earth
D. The time it takes for a satellite to travel from perigee to apogee
C. The time it takes for a satellite to complete one revolution around the Earth
What is meant by the term mode as applied to an amateur radio satellite?
A. The type of signals that can be relayed through the satellite
B. The satellite’s uplink and downlink frequency bands
C. The satellite’s orientation with respect to the Earth
D. Whether the satellite is in a polar or equatorial orbit
B. The satellite’s uplink and downlink frequency bands
What do the letters in a satellite’s mode designator specify?
A. Power limits for uplink and downlink transmissions
B. The location of the ground control station
C. The polarization of uplink and downlink signals
D. The uplink and downlink frequency ranges
D. The uplink and downlink frequency ranges
On what band would a satellite receive signals if it were operating in mode U/V?
A. 435-438 MHz
B. 144-146 MHz
C. 50.0-50.2 MHz
D. 29.5 to 29.7 MHz
A. 435-438 MHz
Which of the following types of signals can be relayed through a linear transponder?
A. FM and CW
B. SSB and SSTV
C. PSK and Packet
D. All of these choices are correct
D. All of these choices are correct
Why should effective radiated power to a satellite which uses a linear transponder be limited?
A. To prevent creating errors in the satellite telemetry
B. To avoid reducing the downlink power to all other users
C. To prevent the satellite from emitting out of band signals
D. To avoid interfering with terrestrial QSOs
B. To avoid reducing the downlink power to all other users
What do the terms L band and S band specify with regard to satellite communications?
A. The 23 centimeter and 13 centimeter bands
B. The 2 meter and 70 centimeter bands
C. FM and Digital Store-and-Forward systems
D. Which sideband to use
A. The 23 centimeter and 13 centimeter bands
Why may the received signal from an amateur satellite exhibit a rapidly repeating fading effect?
A. Because the satellite is spinning
B. Because of ionospheric absorption
C. Because of the satellite’s low orbital altitude
D. Because of the Doppler Effect
A. Because the satellite is spinning
What type of antenna can be used to minimize the effects of spin modulation and Faraday rotation?
A. A linearly polarized antenna
B. A circularly polarized antenna
C. An isotropic antenna
D. A log-periodic dipole array
B. A circularly polarized antenna
What is one way to predict the location of a satellite at a given time?
A. By means of the Doppler data for the specified satellite
B. By subtracting the mean anomaly from the orbital inclination
C. By adding the mean anomaly to the orbital inclination
D. By calculations using the Keplerian elements for the specified satellite
D. By calculations using the Keplerian elements for the specified satellite
What type of satellite appears to stay in one position in the sky?
A. HEO
B. Geostationary
C. Geomagnetic
D. LEO
B. Geostationary
How many times per second is a new frame transmitted in a fast-scan (NTSC) television system?
A. 30
B. 60
C. 90
D. 120
A. 30
How many horizontal lines make up a fast-scan (NTSC) television frame?
A. 30
B. 60
C. 525
D. 1080
C. 525
How is an interlaced scanning pattern generated in a fast-scan (NTSC) television system?
A. By scanning two fields simultaneously
B. By scanning each field from bottom to top
C. By scanning lines from left to right in one field and right to left in the next
D. By scanning odd numbered lines in one field and even numbered ones in the next
D. By scanning odd numbered lines in one field and even numbered ones in the next
What is blanking in a video signal?
A. Synchronization of the horizontal and vertical sync pulses
B. Turning off the scanning beam while it is traveling from right to left or from bottom to top
C. Turning off the scanning beam at the conclusion of a transmission
D. Transmitting a black and white test pattern
B. Turning off the scanning beam while it is traveling from right to left or from bottom to top
Which of the following is an advantage of using vestigial sideband for standard fast- scan TV transmissions?
A. The vestigial sideband carries the audio information
B. The vestigial sideband contains chroma information
C. Vestigial sideband reduces bandwidth while allowing for simple video detector circuitry
D. Vestigial sideband provides high frequency emphasis to sharpen the picture
C. Vestigial sideband reduces bandwidth while allowing for simple video detector circuitry
What is vestigial sideband modulation?
A. Amplitude modulation in which one complete sideband and a portion of the other are transmitted
B. A type of modulation in which one sideband is inverted
C. Narrow-band FM transmission achieved by filtering one sideband from the audio before frequency modulating the carrier
D. Spread spectrum modulation achieved by applying FM modulation following single sideband amplitude modulation
A. Amplitude modulation in which one complete sideband and a portion of the other are transmitted
What is the name of the signal component that carries color information in NTSC video?
A. Luminance
B. Chroma
C. Hue
D. Spectral Intensity
B. Chroma
Which of the following is a common method of transmitting accompanying audio with amateur fast-scan television?
A. Frequency-modulated sub-carrier
B. A separate VHF or UHF audio link
C. Frequency modulation of the video carrier
D. All of these choices are correct
D. All of these choices are correct
What hardware, other than a receiver with SSB capability and a suitable computer, is needed to decode SSTV using Digital Radio Mondiale (DRM)?
A. A special IF converter
B. A special front end limiter
C. A special notch filter to remove synchronization pulses
D. No other hardware is needed
D. No other hardware is needed
Which of the following is an acceptable bandwidth for Digital Radio Mondiale (DRM) based voice or SSTV digital transmissions made on the HF amateur bands?
A. 3 KHz
B. 10 KHz
C. 15 KHz
D. 20 KHz
A. 3 KHz
What is the function of the Vertical Interval Signaling (VIS) code transmitted as part of an SSTV transmission?
A. To lock the color burst oscillator in color SSTV images
B. To identify the SSTV mode being used
C. To provide vertical synchronization
D. To identify the call sign of the station transmitting
B. To identify the SSTV mode being used
How are analog SSTV images typically transmitted on the HF bands?
A. Video is converted to equivalent Baudot representation
B. Video is converted to equivalent ASCII representation
C. Varying tone frequencies representing the video are transmitted using PSK
D. Varying tone frequencies representing the video are transmitted using single sideband
D. Varying tone frequencies representing the video are transmitted using single sideband
How many lines are commonly used in each frame on an amateur slow-scan color television picture?
A. 30 to 60
B. 60 or 100
C. 128 or 256
D. 180 or 360
C. 128 or 256
What aspect of an amateur slow-scan television signal encodes the brightness of the picture?
A. Tone frequency
B. Tone amplitude
C. Sync amplitude
D. Sync frequency
A. Tone frequency