47 CFR 24.135 - Frequency stability.

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§ 24.135 Frequency stability.

(a) The frequency stability of the transmitter shall be maintained within ±0.0001 percent (±1 ppm) of the center frequency over a temperature variation of −30 °Celsius to 50 °Celsius at normal supply voltage, and over a variation in the primary supply voltage of 85 percent to 115 percent of the rated supply voltage at a temperature of 20 °Celsius.

(b) For battery operated equipment, the equipment tests shall be performed using a new battery without any further requirement to vary supply voltage.

(c) It is acceptable for a transmitter to meet this frequency stability requirement over a narrower temperature range provided the transmitter ceases to function before it exceeds these frequency stability limits.

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

Title 47 published on 09-May-2017 04:29

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 47 CFR Part 24 after this date.

  • 2016-04-20; vol. 81 # 76 - Wednesday, April 20, 2016
    1. 81 FR 23267 - Incorporating the American National Standard for Compliance Testing of Transmitters Used in Licensed Radio Services (ANSI C63.26-2015) Into the Commission's Rules
      GPO FDSys XML | Text
      Proposed rule.
      Submit comments on or before May 5, 2016. Reply Comment Date: May 16, 2016.
      47 CFR Parts 2, 22, 24, 25, 27, 90, 95 and 101
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