Sec.  22.352   Protection from interference.

   Public Mobile Service stations operating in accordance with applicable FCC
   rules and the terms and conditions of their authorizations are normally
   considered to be non-interfering. If the FCC determines, however, that
   interference that significantly interrupts or degrades a radio service is
   being caused, it may, in accordance with the provisions of sections 303(f)
   and 316 of the Communications Act of 1934, as amended, (47 U.S.C. 303(f),
   316), require modifications to any Public Mobile station as necessary to
   eliminate such interference.

   (a) Failure to operate as authorized. Any licensee causing interference to
   the service of other stations by failing to operate its station in full
   accordance with its authorization and applicable FCC rules shall discontinue
   all transmissions, except those necessary for the immediate safety of life
   or property, until it can bring its station into full compliance with the
   authorization and rules.

   (b) Intermodulation interference. Licensees should attempt to resolve such
   interference by technical means.

   (c)  Situations in which no protection is afforded. Except as provided
   elsewhere in this part, no protection from interference is afforded in the
   following situations:

   (1)  Interference  to  base receivers from base or fixed transmitters.
   Licensees should attempt to resolve such interference by technical means or
   operating arrangements.

   (2) Inteference to mobile receivers from mobile transmitters. No protection
   is provided against mobile-to-mobile interference.

   (3) Interference to base receivers from mobile transmitters. No protection
   is provided against mobile-to-base interference.

   (4) Interference to fixed stations. Licensees should attempt to resolve such
   interference by technical means or operating arrangements.

   (5) Anomalous or infrequent propagation modes. No protection is provided
   against interference caused by tropospheric and ionospheric propagation of
   signals.

   (6) Facilities for which the Commission is not notified. No protection is
   provided against interference to the service of any additional or modified
   transmitter operating pursuant to  Sec.  Sec. 1.929 or 22.165, unless and until the
   licensee modifies its authorization using FCC Form 601.

   (7)  In-building  radiation systems. No protection is provided against
   interference to the service of in-building radiation systems (see  Sec. 22.383).

   [ 59 FR 59507 , Nov. 17, 1994, as amended at  62 FR 11633 , Mar. 12, 1997;  63 FR 68944 , Dec. 14, 1998;  70 FR 19308 , Apr. 13, 2005]