47 C.F.R. § 18.309

Current through November 30, 2024

Section 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 1.705	Lowest frequency generated in the device, but not lower than 9 kHz	30 MHz.
1.705 to 30	Lowest frequency generated in the device, but not lower than 9 kHz	400 MHz.
30 to 500	Lowest frequency generated in the device or 25 MHz, whichever is lower	Tenth harmonic or 1,000 MHz, whichever is higher.
500 to 1,000	Lowest frequency generated in the device or 100 MHz, whichever is lower	Tenth harmonic.
Above 1,000	......do	Tenth harmonic or highest detectable emission.

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

47 C.F.R. §18.309

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