Topic T8A Quick Review Audio

T8A01:

Which of the following is a form of amplitude modulation?

  1. Spread spectrum
  2. Packet radio
  3. Single sideband
  4. Phase shift keying (PSK)

T8A02:

What type of modulation is most commonly used for VHF packet radio transmissions?

  1. FM
  2. SSB
  3. AM
  4. PSK

T8A03:

Which type of voice mode is most often used for long-distance (weak signal) contacts on the VHF and UHF bands?

  1. FM
  2. DRM
  3. SSB
  4. PM

T8A04:

Which type of modulation is most commonly used for VHF and UHF voice repeaters?

  1. AM
  2. SSB
  3. PSK
  4. FM

T8A05:

Which of the following types of emission has the narrowest bandwidth?

  1. FM voice
  2. SSB voice
  3. CW
  4. Slow-scan TV

T8A06:

Which sideband is normally used for 10 meter HF, VHF, and UHF single-sideband communications?

  1. Upper sideband
  2. Lower sideband
  3. Suppressed sideband
  4. Inverted sideband

T8A07:

What is an advantage of single sideband (SSB) over FM for voice transmissions?

  1. SSB signals are easier to tune
  2. SSB signals are less susceptible to interference
  3. SSB signals have narrower bandwidth
  4. All of these choices are correct

T8A08:

What is the approximate bandwidth of a single sideband (SSB) voice signal?

  1. 1 kHz
  2. 3 kHz
  3. 6 kHz
  4. 15 kHz

T8A09:

What is the approximate bandwidth of a VHF repeater FM phone signal?

  1. Less than 500 Hz
  2. About 150 kHz
  3. Between 10 and 15 kHz
  4. Between 50 and 125 kHz

T8A10:

What is the typical bandwidth of analog fast-scan TV transmissions on the 70 centimeter band?

  1. More than 10 MHz
  2. About 6 MHz
  3. About 3 MHz
  4. About 1 MHz

T8A11:

What is the approximate maximum bandwidth required to transmit a CW signal?

  1. 2.4 kHz
  2. 150 Hz
  3. 1000 Hz
  4. 15 kHz