[97.13(b)] , [97.303] , [97.311(b)]

Which of the following conditions require a licensed Amateur Radio operator to take specific steps to avoid harmful interference to other users or facilities?

  1. When operating within one mile of an FCC Monitoring Station
  2. When using a band where the Amateur Service is secondary
  3. When a station is transmitting spread spectrum emissions
  4. All these choices are correct