---
kind: "section"
citation: "47 C.F.R. § 30.203"
title: "47"
number: "30.203"
heading: "Emissions limits."
url: "https://uscodex.org/cfr/47/30.203"
---

# §30.203. Emissions limits.

- (a) The conductive power or the total radiated power of any emission outside a licensee's frequency block shall be −13 dBm/MHz or lower. However, in the bands immediately outside and adjacent to the licensee's frequency block, having a bandwidth equal to 10 percent of the channel bandwidth, the conductive power or the total radiated power of any emission shall be −5 dBm/MHz or lower.
- (b)
  - (1) Compliance with this provision is based on the use of measurement instrumentation employing a resolution bandwidth of 1 megahertz or greater.
  - (2) When measuring the emission limits, the nominal carrier frequency shall be adjusted as close to the licensee's frequency block edges as the design permits.
  - (3) **The measurements of emission power can be expressed in peak or average values.**
- (c) For fixed point-to-point and point-to-multipoint limits see [§ 30.404](/cfr/47/30.404.md).
- (d)
  - (1) In addition to the limits noted in [paragraphs (a) through (c)](#a..c) of this section, for licensees operating mobile equipment in the 24.25-24.45 GHz or 24.75-25.25 GHz bands, the maximum conducted output power or the total radiated power of emissions in any 200 MHz of the 23.6-24.0 GHz band shall not exceed −33 dBW (for base stations) or −29 dBW (for mobile stations).
  - (2) For mobile equipment brought into use after September 1, 2027, the maximum conducted output power or the total radiated power of emissions in any 200 MHz of the 23.6-24.0 GHz band shall not exceed −39 dBW (for base stations) or −35 dBW (for mobile stations). If equipment brought into use on or prior to September 1, 2027 is replaced, or modified in a manner that changes the emissions characteristics of the equipment, the equipment must then comply with the emissions limits in this [paragraph (d)](#d).

## Notes

### Amendments

[81 FR 79937, Nov. 14, 2016, as amended at 89 FR 100868, Dec. 13, 2024]

### Authority

Authority: 47 U.S.C. 151, 152, 153, 154, 301, 303, 304, 307, 309, 310, 316, 332, 1302, unless otherwise noted.

### Source

Source: 81 FR 79937, Nov. 14, 2016, unless otherwise noted.

### Amendments

[81 FR 79937, Nov. 14, 2016, as amended at 89 FR 100868, Dec. 13, 2024]