47 CFR 90.691 - Emission mask requirements for EA-based systems.

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There are 6 Updates appearing in the Federal Register for 47 CFR 90. View below or at eCFR (GPOAccess)
§ 90.691 Emission mask requirements for EA-based systems.
(a) Out-of-band emission requirement shall apply only to the “outer” channels included in an EA license and to spectrum adjacent to interior channels used by incumbent licensees. The emission limits are as follows:
(1) For any frequency removed from the EA licensee's frequency block by up to and including 37.5 kHz, the power of any emission shall be attenuated below the transmitter power (P) in watts by at least 116 Log10(f/6.1) decibels or 50 10 Log10(P) decibels or 80 decibels, whichever is the lesser attenuation, where f is the frequency removed from the center of the outer channel in the block in kilohertz and where f is greater than 12.5 kHz.
(2) For any frequency removed from the EA licensee's frequency block greater than 37.5 kHz, the power of any emission shall be attenuated below the transmitter power (P) in watts by at least 43 10Log10(P) decibels or 80 decibels, whichever is the lesser attenuation, where f is the frequency removed from the center of the outer channel in the block in kilohertz and where f is greater than 37.5 kHz.
(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.

Title 47 published on 2013-10-01

The following are only the Rules published in the Federal Register after the published date of Title 47.

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  • 2014-08-05; vol. 79 # 150 - Tuesday, August 5, 2014
    1. 79 FR 45371 - Rules in the 904-909.75 and 919.75-928 MHz Bands
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      FEDERAL COMMUNICATIONS COMMISSION
      Final rule.
      Effective Date: September 4, 2014.
      47 CFR Part 90

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United States Code
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Title 47 published on 2013-10-01

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

  • 2014-08-06; vol. 79 # 151 - Wednesday, August 6, 2014
    1. 79 FR 45752 - Commission Seeks Comment on Shared Commercial Operations in the 3550-3650 MHz Band; Extension of Reply Comment Period
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      FEDERAL COMMUNICATIONS COMMISSION
      Proposed rule; extension of reply comment period.
      Submit reply comments on or before August 15, 2014.
      47 CFR Parts 1, 2, 90, 95, and 96