How many times per second is a new frame transmitted in a fast-scan (NTSC) television system?

  1. 30
  2. 60
  3. 90
  4. 120


How many horizontal lines make up a fast-scan (NTSC) television frame?

  1. 30
  2. 60
  3. 525
  4. 1080


How is an interlaced scanning pattern generated in a fast-scan (NTSC) television system?

  1. By scanning two fields simultaneously
  2. By scanning each field from bottom to top
  3. By scanning lines from left to right in one field and right to left in the next
  4. By scanning odd numbered lines in one field and even numbered lines in the next


What is blanking in a video signal?

  1. Synchronization of the horizontal and vertical sync pulses
  2. Turning off the scanning beam while it is traveling from right to left or from bottom to top
  3. Turning off the scanning beam at the conclusion of a transmission
  4. Transmitting a black and white test pattern


Which of the following is an advantage of using vestigial sideband for standard fast- scan TV transmissions?

  1. The vestigial sideband carries the audio information
  2. The vestigial sideband contains chroma information
  3. Vestigial sideband reduces bandwidth while allowing for simple video detector circuitry
  4. Vestigial sideband provides high frequency emphasis to sharpen the picture


What is vestigial sideband modulation?

  1. Amplitude modulation in which one complete sideband and a portion of the other are transmitted
  2. A type of modulation in which one sideband is inverted
  3. Narrow-band FM modulation achieved by filtering one sideband from the audio before frequency modulating the carrier
  4. Spread spectrum modulation achieved by applying FM modulation following single sideband amplitude modulation


What is the name of the signal component that carries color information in NTSC video?

  1. Luminance
  2. Chroma
  3. Hue
  4. Spectral Intensity


Which of the following is a common method of transmitting accompanying audio with amateur fast-scan television?

  1. Frequency-modulated sub-carrier
  2. A separate VHF or UHF audio link
  3. Frequency modulation of the video carrier
  4. 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)?

  1. A special IF converter
  2. A special front end limiter
  3. A special notch filter to remove synchronization pulses
  4. 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?

  1. 3 KHz
  2. 10 KHz
  3. 15 KHz
  4. 20 KHz


What is the function of the Vertical Interval Signaling (VIS) code sent as part of an SSTV transmission?

  1. To lock the color burst oscillator in color SSTV images
  2. To identify the SSTV mode being used
  3. To provide vertical synchronization
  4. To identify the call sign of the station transmitting


How are analog SSTV images typically transmitted on the HF bands?

  1. Video is converted to equivalent Baudot representation
  2. Video is converted to equivalent ASCII representation
  3. Varying tone frequencies representing the video are transmitted using PSK
  4. Varying tone frequencies representing the video are transmitted using single sideband


How many lines are commonly used in each frame of an amateur slow-scan color television picture?

  1. 30 or 60
  2. 60 or 100
  3. 128 or 256
  4. 180 or 360


What aspect of an amateur slow-scan television signal encodes the brightness of the picture?

  1. Tone frequency
  2. Tone amplitude
  3. Sync amplitude
  4. Sync frequency


What signals SSTV receiving equipment to begin a new picture line?

  1. Specific tone frequencies
  2. Elapsed time
  3. Specific tone amplitudes
  4. A two-tone signal


Which is a video standard used by North American Fast Scan ATV stations?

  1. PAL
  2. DRM
  3. Scottie
  4. NTSC


What is the approximate bandwidth of a slow-scan TV signal?

  1. 600 Hz
  2. 3 kHz
  3. 2 MHz
  4. 6 MHz


On which of the following frequencies is one likely to find FM ATV transmissions?

  1. 14.230 MHz
  2. 29.6 MHz
  3. 52.525 MHz
  4. 1255 MHz


What special operating frequency restrictions are imposed on slow scan TV transmissions?

  1. None; they are allowed on all amateur frequencies
  2. They are restricted to 7.245 MHz, 14.245 MHz, 21.345 MHz, and 28.945 MHz
  3. They are restricted to phone band segments and their bandwidth can be no greater than that of a voice signal of the same modulation type
  4. They are not permitted above 54 MHz