Topic T7A Quick Review Audio


Which term describes the ability of a receiver to detect the presence of a signal?

  1. Linearity
  2. Sensitivity
  3. Selectivity
  4. Total Harmonic Distortion


What is a transceiver?

  1. A type of antenna switch
  2. A unit combining the functions of a transmitter and a receiver
  3. A component in a repeater that filters out unwanted interference
  4. A type of antenna matching network


Which of the following is used to convert a radio signal from one frequency to another?

  1. Phase splitter
  2. Mixer
  3. Inverter
  4. Amplifier


Which term describes the ability of a receiver to discriminate between multiple signals?

  1. Discrimination ratio
  2. Sensitivity
  3. Selectivity
  4. Harmonic distortion


What is the name of a circuit that generates a signal at a specific frequency?

  1. Reactance modulator
  2. Product detector
  3. Low-pass filter
  4. Oscillator


What device converts the RF input and output of a transceiver to another band?

  1. High-pass filter
  2. Low-pass filter
  3. Transverter
  4. Phase converter


What is meant by "PTT"?

  1. Pre-transmission tuning to reduce transmitter harmonic emission
  2. Precise tone transmissions used to limit repeater access to only certain signals
  3. A primary transformer tuner used to match antennas
  4. The push-to-talk function that switches between receive and transmit


Which of the following describes combining speech with an RF carrier signal?

  1. Impedance matching
  2. Oscillation
  3. Modulation
  4. Low-pass filtering


What is the function of the SSB/CW-FM switch on a VHF power amplifier?

  1. Change the mode of the transmitted signal
  2. Set the amplifier for proper operation in the selected mode
  3. Change the frequency range of the amplifier to operate in the proper portion of the band
  4. Reduce the received signal noise


What device increases the low-power output from a handheld transceiver?

  1. A voltage divider
  2. An RF power amplifier
  3. An impedance network
  4. All of these choices are correct


Where is an RF preamplifier installed?

  1. Between the antenna and receiver
  2. At the output of the transmitter's power amplifier
  3. Between a transmitter and antenna tuner
  4. At the receiver's audio output