§ 74.802   Frequency assignment.

   (a)(1) Frequencies within the following bands may be assigned for use
   by low power auxiliary stations:

   26.100-26.480 MHz

   54.000-72.000 MHz

   76.000-88.000 MHz

   161.625-161.775 MHz (except in Puerto Rico or the Virgin Islands)

   174.000-216.000 MHz

   450.000-451.000 MHz

   455.000-456.000 MHz

   470.000-488.000 MHz

   488.000-494.000 MHz (except Hawaii)

   494.000-608.000 MHz

   614.000-698.000 MHz

   941.500-944.000 MHz

   944.000-952.000 MHz

   952.850-956.250 MHz

   956.45-959.85 MHz

   1435-1525 MHz

   6875.000-6900.000 MHz

   7100.000-7125.000 MHz

   Note to paragraph (a)(1): Frequency assignments in the 614.000-698.000
   MHz band are subject to conditions established in proceedings pursuant
   to GN Docket No. 12-268. This band is being transitioned to the 600 MHz
   service band, the 600 MHz guard band, and the 600 MHz duplex gap during
   the post-incentive auction transition period (as defined in § 27.4 of
   this chapter), which began on April 13, 2017. Low power auxiliary
   stations must comply with the applicable conditions with respect to any
   assignment to operate on frequencies repurposed for the 600 MHz service
   band, the 600 MHz guard band, and the 600 MHz duplex gap, respectively.
   This rule will be further updated, pursuant to public notice or
   subsequent Commission action, to reflect additional changes that
   implement the determinations made in these proceedings.

   (2) The 653.000-657.000 MHz segment of the 600 MHz duplex gap may be
   assigned for use by low power auxiliary service.

   Note to paragraph (a)(2): The specific frequencies for the 600 MHz
   duplex gap will be determined in light of further proceedings pursuant
   to GN Docket No. 12-268 and the rule will be updated accordingly
   pursuant to a future public notice.

   (b)(1) Operations in the bands allocated for TV broadcasting are
   limited to locations at least 4 kilometers outside the protected
   contours of co-channel TV stations shown in the following table. These
   contours are calculated using the methodology in § 73.684 of this
   chapter and the R-6602 curves contained in § 73.699 of this chapter.
   Type of station Protected contour
   Channel Contour
   (dBu) Propagation curve
   Analog: Class A TV, LPTV,
   translator and booster Low VHF (2-6) 47 F(50,50)
       High VHF (7-13) 56 F(50,50)
       UHF (14-51) 64 F(50,50)
   Digital: Full service TV, Class A TV, LPTV, translator and booster Low
   VHF (2-6) 28 F(50,90)
       High VHF (7-13) 36 F(50,90)
       UHF (14-51) 41 F(50,90)

   (2) Low power auxiliary stations may operate closer to co-channel TV
   broadcast stations than the distances specified in paragraph (b)(1) of
   this section provided that such operations either—

   (i) Are coordinated with TV broadcast stations that could be affected
   by the low power auxiliary station operation, and coordination is
   completed prior to operation of the low power auxiliary station; or

   (ii) Are limited to an indoor location that is not being used for
   over-the-air television viewing, and the following conditions are met
   with respect to the TV channel used: The TV signal falls below a
   threshold of −84 dBm over the entire channel; the signal is scanned
   across the full 6 megahertz channel where the wireless microphones
   would be operated; and to the extent that directional antennas are
   used, they are rotated to the place of maximum signal.

   (c) Specific frequency operation is required when operating within the
   600 MHz duplex gap or the bands allocated for TV broadcasting.

   (1) The frequency selection shall be offset from the upper or lower
   band limits by 25 kHz or an integral multiple thereof.

   (2) One or more adjacent 25 kHz segments within the assignable
   frequencies may be combined to form a channel whose maximum bandwidth
   shall not exceed 200 kHz.

   (d) Low power auxiliary licensees will not be granted exclusive
   frequency assignments.

   (e) Clearing mechanisms for the 700 MHz Band. This section sets forth
   provisions relating to the transition of low power auxiliary stations
   operating at 698-806 MHz (700 MHz band).

   (1) Any low power auxiliary station that operates at frequencies in the
   700 MHz band while transitioning its operations out of that band must
   not cause harmful interference and must accept interference from any
   commercial or public safety wireless licensees in the 700 MHz band.

   (2) Any low power auxiliary station that operates at frequencies in the
   700 MHz band will have until no later than June 12, 2010 to transition
   its operations completely out of the 700 MHz band, subject to the
   following. During this transition period, any commercial or public
   safety licensee in the 700 MHz band may choose one or both of the
   following voluntary methods to notify low power auxiliary stations:

   (i) Any commercial or public safety licensee in the 700 MHz band may
   notify the Commission that it has initiated or will be initiating
   operations on specified frequencies in a particular market(s) in the
   700 MHz band. The wireless operations initiated by the commercial or
   public safety 700 MHz licensees may include system testing or trials.
   Following receipt of the notification, the Commission will issue a
   public notice providing that operators of low power auxiliary stations,
   including wireless microphones, in the 700 MHz band in those market(s)
   will be required to cease operations within 60 days after the
   Commission's notice is released.

   (ii) Any commercial or public safety licensee in the 700 MHz band may
   notify any low power auxiliary station users operating in the 700 MHz
   band that it has initiated or will be initiating operations on
   specified frequencies in the market in which the low power auxiliary
   station is operating. The wireless operations initiated by the
   commercial or public safety 700 MHz licensees may include system
   testing or trials. Upon receipt of such notice, the low power auxiliary
   station in the affected market area must cease operation within 60
   days.

   (iii) In the event that both of these notice provisions in paragraphs
   (e)(2)(i) and (ii) of this section are used with respect to a
   particular low power auxiliary station, the low power auxiliary station
   will have to cease operations in the market(s) in accordance with
   whichever notice provides for earlier termination of its operations.

   (3) Notwithstanding this 60 day notice requirement, any low power
   auxiliary station that causes harmful interference to any commercial or
   public safety 700 MHz licensee must cease operations immediately,
   consistent with the rules for secondary use.

   (f) Operations in 600 MHz band assigned to wireless licensees under
   part 27 of this chapter. Alow power auxiliary station that operates on
   frequencies in the 600 MHz band assigned to wireless licensees under
   part 27 of this chapter must cease operations on those frequencies no
   later than the end of the post-auction transition period, as defined in
   § 27.4 of this chapter. During the post-auction transition period, low
   power auxiliary stations will operate on a secondary basis to licensees
   of part 27 of this chapter, i.e., they must not cause to and must
   accept harmful interference from these licensees, and must comply with
   the distance separations in § 15.236(e)(2) of this chapter from the
   areas specified in § 15.713(j)(10) of this chapter in which a licensee
   has commenced operations, as defined in § 27.4 of this chapter.

   [ 52 FR 2535 , Jan. 23, 1987, as amended at  68 FR 12772 , Mar. 17, 2003;
    75 FR 3638 , Jan. 22, 2010;  79 FR 48545 , Aug. 15, 2014;  80 FR 71728 ,
   Nov. 17, 2015;  80 FR 73085 , Nov. 23, 2015;  81 FR 4975 , Jan. 29, 2016;
    82 FR 41560 , Sept. 1, 2017]

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