47 CFR § 73.6010 - Class A TV station protected contour.

---
identifier: "/us/cfr/t47/s73.6010"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "47 CFR § 73.6010 - Class A TV station protected contour."
title_number: 47
title_name: "Telecommunication"
section_number: "73.6010"
section_name: "Class A TV station protected contour."
chapter_name: "FEDERAL COMMUNICATIONS COMMISSION"
subchapter_number: "C"
subchapter_name: "BROADCAST RADIO SERVICES"
part_number: "73"
part_name: "RADIO BROADCAST SERVICES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "47 U.S.C. 154, 155, 301, 303, 307, 309, 310, 334, 336, 339."
cfr_part: "73"
---


# 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).

(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).

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