A = 35 + 0.8(G - 50) + 10 Log10 B.
(Attenuation greater than 80 decibels is not required.)
Where:
A = Attenuation (in decibels) below the mean output power level.
G = Percent removed from the carrier frequency.
B = Authorized bandwidth in megahertz.
A = 11 + 0.4(G - 50) + 10 Log10 B.
(Attenuation greater than 56 decibels is not required.)
A = 29 Log10 [(25/11)[(D + 2.5 - (W/2)]2] dB
(Attenuation greater than 50 decibels is not required.)
Where:
A = Attenuation (in dB) below the peak envelope transmitter power.
D = the displacement frequency (kHz) from the center of the authorized bandwidth.
W = the channel bandwidth (kHz).
Note 1 to paragraph (d)(4): the Declaration of Conformity procedure has been replaced by the Supplier's Declaration of Conformity procedure. See § 2.950 of this chapter.
47 C.F.R. §74.535