47 CFR 90.689

§ 90.689 Field strength limits.

United States · 47 CFR — Telecommunication · Status: effective

Cite this

Citation: 47 CFR 90.689, § 90.689 Field strength limits, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/238100
Permanent ID: ys:prov:238100@1
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Full text

(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.

Legislative history

This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.