1. Regulations
  2. title 47
  3. chapter I
  4. part 18
  5. subpart C
  6. § 18.309

View all text of Subpart C [§ 18.301 - § 18.313]

§ 18.309 - Frequency range of measurements.

(a) For field strength measurements:

Frequency band in which device operates (MHz) Range of frequency measurements Lowest frequency Highest frequency Below 1.705Lowest frequency generated in the device, but not lower than 9 kHz30 MHz. 1.705 to 30Lowest frequency generated in the device, but not lower than 9 kHz400 MHz. 30 to 500Lowest frequency generated in the device or 25 MHz, whichever is lowerTenth harmonic or 1,000 MHz, whichever is higher. 500 to 1,000Lowest frequency generated in the device or 100 MHz, whichever is lowerTenth harmonic. Above 1,000......doTenth harmonic or highest detectable emission.

(b) For conducted powerline measurements, the frequency range over which the limits are specified will be scanned.

[50 FR 36070, Sept. 5, 1985, as amended at 51 FR 17971, May 16, 1986]

AUTHORITY: 47 U.S.C. 154, 301, 302, 303, 304, 307.

SOURCE: 50 FR 36067, Sept. 5, 1985, unless otherwise noted.

CITE AS: 47 CFR 18.309