Telecommunication. Part90:Private land mobile radio services. Subpart R:Regulations governing the licensing and use of frequencies in the 758–775 and 788–805 MHz bands. Section90.548:Interoperability technical standards.
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).