Skip to main content
Find a Lawyer

Code of Federal Regulations Title 47. Telecommunication § 47.90.635 Limitations on power and antenna height

Current as of January 02, 2025 | Updated by Findlaw Staff

(a) The effective radiated power and antenna height for base stations may not exceed 1 kilowatt (30 dBw) and 304 m. (1,000 ft.) above average terrain (AAT), respectively, or the equivalent thereof as determined from the Table. These are maximum values, and applicants will be required to justify power levels and antenna heights requested.

(b) The maximum output power of the transmitter for mobile stations is 100 watts (20 dBw).

Table.—Equivalent Power and Antenna Heights for Base Stations in the 851-869 MHz and 935-940 MHz Bands Which Have a Requirement for a 32 km (20 mi) Service Area Radius

Antenna height (ATT) meters (feet)

Effective radiated power (watts) 124

Above 1,372 (4,500)

65

Above 1,220 (4,000) to 1,372 (4,500)

70

Above 1,067 (3,500) to 1,220 (4,000)

75

Above 915 (3,000) to 1,067 (3,500)

100

Above 763 (2,500) to 915 (3,000)

140

Above 610 (2,000) to 763 (2,500)

200

Above 458 (1,500) to 610 (2,000)

350

Above 305 (1,000) to 458 (1,500)

600

Up to 305 (1,000)

3 1,000

1 Power is given in terms of effective radiated power (ERP).

2 Applicants in the Los Angeles, CA, area who demonstrate a need to serve both the downtown and fringe areas will be permitted to utilize an ERP of 1 kw at the following mountaintop sites: Santiago Park, Sierra Peak, Mount Lukens, and Mount Wilson.

3 Stations with antennas below 305 m (1,000 ft) (AAT) will be restricted to a maximum power of 1 kw (ERP).

4 Licensees in San Diego, CA, will be permitted to utilize an ERP of 500 watts at the following mountaintop sites: Palomar, Otay, Woodson and Miguel.

Previous Part of Code Next Part of Code
Back to Chapter List

Cite this article: FindLaw.com - Code of Federal Regulations Title 47. Telecommunication § 47.90.635 Limitations on power and antenna height - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-47-telecommunication/cfr-sect-47-90-635/

FindLaw Codes may not reflect the most recent version of the law in your jurisdiction. Please verify the status of the code you are researching with the state legislature before relying on it for your legal needs.

Was this helpful?

Welcome to FindLaw's Cases & Codes

A free source of state and federal court opinions, state laws, and the United States Code. For more information about the legal concepts addressed by these cases and statutes, visit FindLaw’s Learn About the Law.

Go to Learn About the Law

Latest Blog Posts

For Legal Professionals

Learn About The Law

Get help with your legal needs

FindLaw’s Learn About the Law features thousands of informational articles to help you understand your options. And if you’re ready to hire an attorney, find one in your area who can help.

Go to Learn About the Law

Need to Find an Attorney?

Search our directory by legal issue

Enter information in one or both fields (Required)

Copied to clipboard