---
kind: "section"
citation: "47 C.F.R. § 73.6010"
title: "47"
number: "73.6010"
heading: "Class A TV station protected contour."
url: "https://uscodex.org/cfr/47/73.6010"
---

# §73.6010. Class A TV station protected contour.

- (a) -(b) [Reserved]
- (c) A Class A TV station will be protected from interference within the following predicted signal contours:
  - (1) 43 dBu for stations on Channels 2 through 6;
  - (2) 48 dBu for stations on Channels 7 through 13; and
  - (3) 51 dBu for stations on Channels 14 through 36.
- (d) The Class A TV station protected contour is calculated from the effective radiated power and antenna height above average terrain, using the F(50,90) signal propagation method specified in [§ 73.619(b)(1)](/cfr/47/73.619.md?p=b-1).
- (e) A digital Class A DTS station will be protected from interference within its Class A DTS protected area as defined by [§ 73.6023(d)](/cfr/47/73.6023.md?p=d).

## Notes

### Amendments

[86 FR 66213, Nov. 22, 2021, as amended at 86 FR 21227, Apr. 22, 2021; 89 FR 7263, Feb. 1, 2024]

### Source

Source: 65 FR 30009, May 10, 2000, unless otherwise noted.

### Authority

Authority: 47 U.S.C. 154, 155, 301, 303, 307, 309, 310, 334, 336, 339.

### Amendments

[86 FR 66213, Nov. 22, 2021, as amended at 86 FR 21227, Apr. 22, 2021; 89 FR 7263, Feb. 1, 2024]