§ 90.547   Narrowband Interoperability channel capability requirement.

   (a)  Except as noted in this section, mobile and portable transmitters
   operating  on  narrowband  channels in the 769-775 MHz and 799-805 MHz
   frequency bands must be capable of being programmed to operate on all of the
   designated nationwide narrowband Interoperability channels pursuant to the
   standards specified in this part.

   (1) Mobile and portable transmitters that are designed to operate only on
   the Low Power Channels specified in § 90.531 (b)(3) and (4) are exempt from
   this Interoperability channel requirement.

   (2) Mobile and portable transmitters that are designed to operate only in
   the data mode must be capable of operation on the data Interoperability
   channels specified in § 90.531(b)(1)(i); but need not be capable of voice
   operation on other Interoperability channels.

   (3) Mobile and portable transmitters that are designed to operate only in
   the voice mode do not have to operate on the data Interoperability channels
   specified in § 90.531(b)(1)(i).

   (b) Mobile and portable transmitters designed for data are not required to
   be voice capable, and vice versa.

   [ 67 FR 61005 , Sept. 27, 2002, as amended at  72 FR 48863 , Aug. 24, 2007;  79 FR 71326 , Dec. 2, 2014]

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