Topic T8C Quick Review Audio


Which of the following methods is used to locate sources of noise interference or jamming?

  1. Echolocation
  2. Doppler radar
  3. Radio direction finding
  4. Phase locking


Which of these items would be useful for a hidden transmitter hunt?

  1. Calibrated SWR meter
  2. A directional antenna
  3. A calibrated noise bridge
  4. All of these choices are correct


What operating activity involves contacting as many stations as possible during a specified period?

  1. Contesting
  2. Net operations
  3. Public service events
  4. Simulated emergency exercises


Which of the following is good procedure when contacting another station in a radio contest?

  1. Sign only the last two letters of your call if there are many other stations calling
  2. Contact the station twice to be sure that you are in his log
  3. Send only the minimum information needed for proper identification and the contest exchange
  4. All of these choices are correct


What is a grid locator?

  1. A letter-number designator assigned to a geographic location
  2. A letter-number designator assigned to an azimuth and elevation
  3. An instrument for neutralizing a final amplifier
  4. An instrument for radio direction finding


How is access to some IRLP nodes accomplished?

  1. By obtaining a password that is sent via voice to the node
  2. By using DTMF signals
  3. By entering the proper internet password
  4. By using CTCSS tone codes


What is meant by Voice Over Internet Protocol (VoIP) as used in amateur radio?

  1. A set of rules specifying how to identify your station when linked over the internet to another station
  2. A set of guidelines for contacting DX stations during contests using internet access
  3. A technique for measuring the modulation quality of a transmitter using remote sites monitored via the internet
  4. A method of delivering voice communications over the internet using digital techniques


What is the Internet Radio Linking Project (IRLP)?

  1. A technique to connect amateur radio systems, such as repeaters, via the internet using Voice Over Internet Protocol (VoIP)
  2. A system for providing access to websites via amateur radio
  3. A system for informing amateurs in real time of the frequency of active DX stations
  4. A technique for measuring signal strength of an amateur transmitter via the internet


How might you obtain a list of active nodes that use VoIP?

  1. By subscribing to an on line service
  2. From on line repeater lists maintained by the local repeater frequency coordinator
  3. From a repeater directory
  4. All of these choices are correct


What must be done before you may use the EchoLink system to communicate using a repeater?

  1. You must complete the required EchoLink training
  2. You must have purchased a license to use the EchoLink software
  3. You must be sponsored by a current EchoLink user
  4. You must register your call sign and provide proof of license


What name is given to an amateur radio station that is used to connect other amateur stations to the internet?

  1. A gateway
  2. A repeater
  3. A digipeater
  4. A beacon