Topic T7B Quick Review Audio


What can you do if you are told your FM handheld or mobile transceiver is over-deviating?

  1. Talk louder into the microphone
  2. Let the transceiver cool off
  3. Change to a higher power level
  4. Talk farther away from the microphone


What would cause a broadcast AM or FM radio to receive an amateur radio transmission unintentionally?

  1. The receiver is unable to reject strong signals outside the AM or FM band
  2. The microphone gain of the transmitter is turned up too high
  3. The audio amplifier of the transmitter is overloaded
  4. The deviation of an FM transmitter is set too low


Which of the following can cause radio frequency interference?

  1. Fundamental overload
  2. Harmonics
  3. Spurious emissions
  4. All of these choices are correct


Which of the following is a way to reduce or eliminate interference from an amateur transmitter to a nearby telephone?

  1. Put a filter on the amateur transmitter
  2. Reduce the microphone gain
  3. Reduce the SWR on the transmitter transmission line
  4. Put an RF filter on the telephone


How can overload of a non-amateur radio or TV receiver by an amateur signal be reduced or eliminated?

  1. Block the amateur signal with a filter at the antenna input of the affected receiver
  2. Block the interfering signal with a filter on the amateur transmitter
  3. Switch the transmitter from FM to SSB
  4. Switch the transmitter to a narrow-band mode


Which of the following actions should you take if a neighbor tells you that your station's transmissions are interfering with their radio or TV reception?

  1. Make sure that your station is functioning properly and that it does not cause interference to your own radio or television when it is tuned to the same channel
  2. Immediately turn off your transmitter and contact the nearest FCC office for assistance
  3. Tell them that your license gives you the right to transmit and nothing can be done to reduce the interference
  4. Install a harmonic doubler on the output of your transmitter and tune it until the interference is eliminated


Which of the following can reduce overload to a VHF transceiver from a nearby FM broadcast station?

  1. RF preamplifier
  2. Double-shielded coaxial cable
  3. Using headphones instead of the speaker
  4. Band-reject filter


What should you do if something in a neighbor's home is causing harmful interference to your amateur station?

  1. Work with your neighbor to identify the offending device
  2. Politely inform your neighbor about the rules that prohibit the use of devices that cause interference
  3. Check your station and make sure it meets the standards of good amateur practice
  4. All of these choices are correct


What is a Part 15 device?

  1. An unlicensed device that may emit low-powered radio signals on frequencies used by a licensed service
  2. An amplifier that has been type-certified for amateur radio
  3. A device for long-distance communications using special codes sanctioned by the International Amateur Radio Union
  4. A type of test set used to determine whether a transmitter complies with FCC regulation 91.15


What might be a problem if you receive a report that your audio signal through the repeater is distorted or unintelligible?

  1. Your transmitter is slightly off frequency
  2. Your batteries are running low
  3. You are in a bad location
  4. All of these choices are correct


What is a symptom of RF feedback in a transmitter or transceiver?

  1. Excessive SWR at the antenna connection
  2. The transmitter will not stay on the desired frequency
  3. Reports of garbled, distorted, or unintelligible voice transmissions
  4. Frequent blowing of power supply fuses


What should be the first step to resolve cable TV interference from your ham radio transmission?

  1. Add a low-pass filter to the TV antenna input
  2. Add a high-pass filter to the TV antenna input
  3. Add a preamplifier to the TV antenna input
  4. Be sure all TV coaxial connectors are installed properly