C.F.R. » Title 47 » CHAPTER I—FEDERAL COMMUNICATIONS COMMISSION › SUBCHAPTER D—SAFETY AND SPECIAL RADIO SERVICES › PART 95—PERSONAL RADIO SERVICES › Subpart B—Family Radio Service (FRS)

47 C.F.R. § 95.577

FRS tone requirements

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In addition to the tones permitted under § 95.377, FRS transmitter types may be designed to transmit brief tones to indicate the end of a transmission.