47 C.F.R. § 90.547 Narrowband Interoperability channel capability requirement.
Title 47 - Telecommunication
(a) Except as noted in this section, mobile and portable transmitters operating on narrowband channels in the 764–776 MHz and 794–806 MHz frequency bands must be capable of operating 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]
Title 47: Telecommunication
PART 90—PRIVATE LAND MOBILE RADIO SERVICES
Subpart R—Regulations Governing the Licensing and Use of Frequencies in the 764–776 and 794–806 MHz Bands
§ 90.547 Narrowband Interoperability channel capability requirement.
