---
kind: "section"
citation: "47 C.F.R. § 95.579"
title: "47"
number: "95.579"
heading: "FRS unwanted emissions limits."
url: "https://uscodex.org/cfr/47/95.579"
---

# §95.579. FRS unwanted emissions limits.


Each FRS transmitter type must be designed to satisfy the applicable unwanted emissions limits in this paragraph.

- (a) **Attenuation requirements.** The power of unwanted emissions must be attenuated below the carrier power output in Watts (P) by at least:
  - (1) 25 dB (decibels) in the frequency band 6.25 kHz to 12.5 kHz removed from the channel center frequency.
  - (2) 35 dB in the frequency band 12.5 kHz to 31.25 kHz removed from the channel center frequency.
  - (3) 43 + 10 log (P) dB in any frequency band removed from the channel center frequency by more than 31.25 kHz.
- (b) **Measurement bandwidths.** The power of unwanted emissions in the frequency bands specified in paragraphs [(a)(1)](#a-1) and [(2)](#a-2) of this section is measured with a reference bandwidth of 300 Hz. The power of unwanted emissions in the frequency range specified in [paragraph (a)(3)](#a-3) is measured with a reference bandwidth of at least 30 kHz.
- (c) **Measurement conditions.** The requirements in this section apply to each FRS transmitter type both with and without the connection of permitted attachments, such as an external speaker, microphone and/or power cord.

## Notes

### Authority

Authority: 47 U.S.C. 154, 303, 307.

### Source

Source: 82 FR 41104, Aug. 29, 2017, unless otherwise noted.