Sec.  74.901   Definitions.

    Link to an amendment published at  69 FR 72045 , Dec. 10, 2004.

   Attended operation. Operation of a station by a designated person on
   duty at the place where the transmitting apparatus is located with the
   transmitter in the person's plain view.

   Booster service area. A geographic area to be designated by an
   applicant for a booster station, within which the booster station
   shall be entitled to protection against interference as set forth in
   this part. The booster service area must be specified by the applicant
   so as to not overlap the booster service area of any other booster
   authorized to or proposed by the applicant. However, a booster station
   may provide service to receive sites outside of its booster service
   area, at the licensee's risk of interference. The booster station must
   be capable of providing substantial service within the designated
   booster service area.

   Channel. Unless otherwise specified, a channel under this part shall
   refer to a 6 MHz frequency block assigned pursuant to Sec. Sec. 21.901(b) of
   this chapter or 74.902(a).

   Documented complaint. A complaint that a party is suffering from
   non-consensual interference. A documented complaint must contain a
   certification that the complainant has contacted the operator of the
   allegedly offending facility and tried to resolve the situation prior
   to filing. The complaint must then specify the nature of the
   interference, whether the interference is constant or intermittent,
   when the interference began and the site(s) most likely to be causing
   the interference. The complaint should be accompanied by a videotape
   or other evidence showing the effects of the interference. The
   complaint must contain a motion for a temporary order to have the
   interfering station cease transmitting. The complaint must be filed
   with the Secretary's office and served on the allegedly offending
   party.

   Equivalent Isotropically Radiated Power (EIRP). The product of the
   power supplied to the antenna and the antenna gain in a given
   direction relative to an isotropic antenna radiator. This product may
   be expressed in watts or dB above 1 watt (dBW).

   Instructional television fixed station. A fixed station licensed to an
   educational organization and intended primarily for video, data, or
   voice transmissions of instructional, cultural, and other types of
   educational material to one or more fixed receiving locations.

   ITFS response station. A fixed station operated by an ITFS licensee,
   the lessee of ITFS channel capacity or a subscriber of either to
   communicate with a response station hub or associated ITFS station. A
   response station under this part may share facilities with other ITFS
   response stations and/or one or more Multipoint Distribution Service
   (MDS) response stations authorized pursuant to Sec. 21.909 of this chapter
   or Sec. 21.949 of this chapter.

   Main channel: The main channel is that portion of each authorized
   channel used for the transmission of visual and aural information as
   set forth in Sec. 73.682 of this Chapter and Sec. 74.938 of this subpart.

   Point-to-point ITFS station. An ITFS station that transmits a highly
   directional signal from a fixed transmitter location to a fixed
   receive location.

   Remote control. Operation of a station by a designated person at a
   control position from which the transmitter is not visible but where
   suitable control and telemetering circuits are provided which allow
   the performance of the essential functions that could be performed at
   the transmitter.

   Response station hub. A fixed facility licensed to an ITFS licensee,
   and operated by an ITFS licensee or the lessee of an ITFS channel, for
   the reception of information transmitted by one or more ITFS response
   stations that utilize digital modulation with uniform power spectral
   density. A response station hub licensed under this part may share
   facilities with other ITFS response station hubs, MDS response station
   hubs authorized pursuant to Sec. 21.909 of this chapter, MDS signal
   booster stations, ITFS signal booster stations, MDS stations, and/or
   ITFS stations.

   Response station hub license. A blanket license authorizing the
   operation of a single response station hub at a specific location and
   the operation of a specified number of associated digital response
   stations of one or more classes at unspecified locations within one or
   more regions of the response service area.

   Sectorization. The use of an antenna system at an ITFS station,
   booster station and/or response station hub that is capable of
   simultaneously transmitting multiple signals over the same frequencies
   to different portions of the service area and/or simultaneously
   receiving multiple signals over the same frequencies from different
   portions of the service area.

   Signal booster station. An ITFS station licensed for use in accordance
   with Sec. 74.985 that operates on one or more ITFS channels. Signal
   booster stations are intended to augment service as part of a
   distributed transmission system where signal booster stations
   retransmit the signal of an ITFS station and/or originate information.
   A signal booster station licensed under this part may share facilities
   with other ITFS signal booster stations, MDS signal booster stations
   authorized pursuant to Sec. 21.913 of this chapter, MDS response stations
   and/or ITFS response stations.

   Studio to transmitter link (STL). A directional path used to transmit
   a signal from a station's studio to its transmitter.

   Subsidiary channel: A subsidiary channel is any portion of an
   authorized channel not used for main channel transmissions.

   Temporary fixed ITFS station. An ITFS station used for the
   transmission of material from temporary unspecified points to an ITFS
   station.

   Unattended operation. Operation of a station by automatic means
   whereby the transmitter is turned on and off and performs its
   functions without attention by a designated person.

   [ 28 FR 13731 , Dec. 14, 1963, as amended at  35 FR 4705 , Mar. 18, 1970;
    48 FR 33901 , July 26, 1983;  49 FR 32596 , Aug. 15, 1984;  55 FR 46013 ,
   Oct. 31, 1990;  60 FR 55483 , Nov. 1, 1995;  63 FR 65113 , Nov. 25, 1998;
    64 FR 63737 , Nov. 22, 1999]