---
kind: "section"
citation: "47 C.F.R. § 78.104"
title: "47"
number: "78.104"
heading: "Authorized bandwidth and emission designator."
url: "https://uscodex.org/cfr/47/78.104"
---

# §78.104. Authorized bandwidth and emission designator.

- (a) The authorized bandwidth permitted to be used by a CARS station and specified in the station license shall be the occupied or necessary bandwidth, whichever is greater, except when otherwise authorized by the Commission in accordance with [paragraph (b)](#b) of this section.
- (b) As an exception to the provision of [paragraph (a)](#a) of this section, the Commission may approve requests to base the authorized bandwidth for the station on the lesser of the occupied or necessary bandwidth where a persuasive showing is made that:
  - (1) The frequency stability of the transmitting equipment to be used will permit compliance with [§ 78.103(b)(1)](/cfr/47/78.103.md?p=b-1) and, additionally, will permit 99 percent of the total radiated power to be kept within the frequency limits of the assigned channel.
- (c) The emission designator shall be specified in terms of the necessary bandwidth. (See [§ 2.201(a)](/cfr/47/2.201.md?p=a) of this chapter.)

## Notes

### Amendments

[39 FR 26025, July 16, 1974, as amended at 45 FR 78694, Nov. 26, 1980]

### Authority

Authority: 47 U.S.C. 152, 153, 154, 301, 303, 307, 308, 309.

### Source

Source: 37 FR 3292, Feb. 12, 1972, unless otherwise noted.

### Amendments

[39 FR 26025, July 16, 1974, as amended at 45 FR 78694, Nov. 26, 1980]