47 CFR 90.689 - Field strength limits.

§ 90.689 Field strength limits.

(a) For purposes of implementing §§ 90.689 through 90.699, predicted 36 and 40 dBµV/m contours shall be calculated using Figure 10 of § 73.699 of this chapter with a correction factor of −9 dB, and predicted 18 and 22 dBµV/m contours shall be calculated using Figure 10a of § 73.699 of this chapter with a correction factor of −9 dB.

(b) The predicted or measured field strength at any location on the border of the EA-based service area for EA licensees must not exceed 40 dBuV/m unless all bordering EA licensees agree to a higher field strength. In the event that this standard conflicts with the EA licensee's obligation to provide co-channel protection to incumbent licensees pursuant to § 90.621(b), the requirements of § 90.621(b) shall prevail.

[ 61 FR 6158, 6159, Feb. 16, 1996, as amended at 62 FR 41216, July 31, 1997]

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

This list is taken from the Parallel Table of Authorities and Rules provided by GPO [Government Printing Office].

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United States Code
Statutes at Large

Title 47 published on 08-Jun-2018 03:55

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 47 CFR Part 90 after this date.

  • 2018-05-07; vol. 83 # 88 - Monday, May 7, 2018
    1. 83 FR 19976 - Modification of Rules To Codify New Procedure for Non-Federal Public Safety Entities To License Federal Interoperability Channels
      GPO FDSys XML | Text
      Final rule.
      Effective June 6, 2018, except for the addition of § 90.25, which contains a new information collection that requires review by the Office of Management and Budget under the Paperwork Reduction Act of 1995. The FCC will publish a document in the Federal Register announcing the effective date of that rule section.
      47 CFR Parts 2 and 90


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