Sec.  15.5   General conditions of operation.

   (a) Persons operating intentional or unintentional radiators shall not be
   deemed to have any vested or recognizable right to continued use of any
   given  frequency  by  virtue of prior registration or certification of
   equipment,  or,  for power line carrier systems, on the basis of prior
   notification of use pursuant to  Sec. 90.63(g) of this chapter.

   (b) Operation of an intentional, unintentional, or incidental radiator is
   subject to the conditions that no harmful interference is caused and that
   interference must be accepted that may be caused by the operation of an
   authorized radio station, by another intentional or unintentional radiator,
   by industrial, scientific and medical (ISM) equipment, or by an incidental
   radiator.

   (c) The operator of a radio frequency device shall be required to cease
   operating the device upon notification by a Commission representative that
   the device is causing harmful interference. Operation shall not resume until
   the condition causing the harmful interference has been corrected.

   (d) Intentional radiators that produce Class B emissions (damped wave) are
   prohibited.