§  15.707   Permissible channels of operation.

   (a) All TVBDs are permitted to operate available channels in the
   frequency bands 512-608 MHz (TV channels 21-36) and 614-698 MHz (TV
   channels 38-51), subject to the interference protection requirements in
   § § 15.711 and 15.712, except that operation of TVBDs is prohibited on
   the first channel above and the first channel below TV channel 37
   (608-614 MHz) that are available, i.e., not occupied by an authorized
   service. If a channel is not available both above and below channel 37,
   operation is prohibited on the first two channels nearest to channel
   37. These channels will be identified and protected in the TV bands
   database(s).

   (b) Operation on available channels in the bands 54-60 MHz (TV channel
   2), 76-88 MHz (TV channels 5 and 6), 174-216 MHz (TV channels 7-13) and
   470-512 MHz (TV channels 14-20), subject to the interference protection
   requirements in § § 15.711 and 15.712, is permitted only for fixed
   TVBDs that communicate only with other fixed TVBDs.

   (c) Fixed and Mode II TVBDs shall operate only on available channels as
   identified in paragraphs (a) and (b) of this section and as determined
   by a TV bands database in accordance with the interference avoidance
   mechanisms of § § 15.711 and 15.712.

   (d) Mode I TVBDs shall operate only on available channels as identified
   in paragraphs (a) and (b) of this section and provided from a fixed or
   Mode II TVBD in accordance with § 15.711(b)(3)(iv).

   [ 75 FR 75836 , Dec. 6, 2010]