47 CFR 90.548 - Interoperability Technical Standards.
(a) Transmitters designed after August 11, 2014 to operate on the narrowband interoperability achannels in the 769-775 and 799-805 MHz band (see § 90.531) shall conform to the following technical standards (transmitters certified prior to this date are grandfathered):
(2) Transmitters designed for data transmission shall include a 12.5 kilohertz bandwidth mode of operation conforming to the following standards: ANSI/TIA-102.BAEA-B-2012, ANSI/TIA-102.BAAA-A-2003, ANSI/TIA-102.BAEB-A-2005, and ANSI/TIA-102.BAEE-B-2010.
(1) TIA/EIA, 2500 Wilson Boulevard, Arlington, VA 22201 703-907-7974. These standards are also available from Global Engineering Documents, 15 Inverness Way East, Englewood, CO 80112; or the American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036, www.ansi.org.
(i) ANSI/TIA-102.BAAA-A-2003, Project 25 FDMA-Common Air Interface, approved September 2003.
(ii) ANSI/TIA-102.BABA-2003, Project 25 Vocoder Description, approved December 2003.
(iii) ANSI/TIA-102.BAEA-B-2012, Project 25 Data Overview - New Technology Standards Project - Digital Radio Technical Standards, approved June 2012.
(iv) ANSI/TIA-102.BAEB-A-2005, Project 25 Packet Data Specification - New Technology Standards Project - Digital Radio Technical Standards, approved March 2005.
(v) ANSI/TIA-102.BAEE-B-2010, Project 25 Radio Management Protocols - New Technology Standards Project - Digital Radio Technical Standards, approved May 2010.
(c) Transceivers capable of operating on the interoperability channels listed in § 90.531(b)(1) shall not be marketed or sold unless the transceiver has previously been certified for interoperability by the Compliance Assessment Program (CAP) administered by the U.S.