What is the maximum mean power level for a spurious emission below 30 MHz with respect to the fundamental emission?

Explanation

For transmitters installed after January 1, 2003, the mean power of any spurious emission below 30 MHz must be at least 43 dB below the mean power of the fundamental. Equipment installed on or before that date is held to a weaker standard of 40 dB and 50 mW. The deeper figures offered match neither standard: the separate rule for transmitters operating between 30 and 225 MHz calls for 60 dB, not 53, 63 or 73.