E1B01:

[97.3]

Which of the following constitutes a spurious emission?

  1. An amateur station transmission made at random without the proper call sign identification
  2. A signal transmitted to prevent its detection by any station other than the intended recipient
  3. Any transmitted signal that unintentionally interferes with another licensed radio station
  4. An emission outside its necessary bandwidth that can be reduced or eliminated without affecting the information transmitted