47 CFR 90.669
§ 90.669 Emission limits.
United States · 47 CFR — Telecommunication · Status: effective
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- Citation
- 47 CFR 90.669, § 90.669 Emission limits, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/238089
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Full text
(a) On any frequency in an MTA licensee's spectrum block that is adjacent to a non-MTA frequency, the power of any emission shall be attenuated below the transmitter power (P) by at least 43 plus 10 log10(P) decibels or 80 decibels, whichever is the lesser attenuation.
The measurements of emission power can be expressed in peak or average values, provided they are expressed in the same parameters as the transmitter power.
(b) When an emission outside of the authorized bandwidth causes harmful interference, the Commission may, at its discretion, require greater attenuation than specified in this section.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.