(a) For the frequency bands indicated below, operations using equipment designed to operate with a 25 kHz channel bandwidth may be authorized up to a 22 kHz bandwidth if the equipment meets the adjacent channel power (ACP) limits below. The table specifies a value for the ACP as a function of the displacement from the channel center frequency and a measurement bandwidth of 18 kHz.
(b)(1) Maximum adjacent power levels for frequencies in the 450-470 MHz band: ------------------------------------------------------------------------
(1) Maximum adjacent power levels for frequencies in the 450-470 MHz band: ------------------------------------------------------------------------
Maximum ACP Maximum ACP
(dBc) for (dBc) for
Frequency offset devices 1 devices
watt and above 1
less watt------------------------------------------------------------------------25 kHz........................................ -55 dBc -60 dBc50 kHz........................................ -70 dBc -70 dBc75 kHz........................................ -70 dBc -70 dBc------------------------------------------------------------------------
(2) In any case, no requirement in excess of -36 dBm shall apply.
(c)(1) Maximum adjacent power levels for frequencies in the 809-824/854-869 MHz band: ------------------------------------------------------------------------
(1) Maximum adjacent power levels for frequencies in the 809-824/854-869 MHz band: ------------------------------------------------------------------------
Maximum ACP Maximum ACP
(dBc) for (dBc) for
Frequency offset devices devices 15
less than watts and
15 watts above------------------------------------------------------------------------25 kHz........................................ -55 dBc -55 dBc50 kHz........................................ -65 dBc -65 dBc75 kHz........................................ -65 dBc -70 dBc------------------------------------------------------------------------
(2) In any case, no requirement in excess of -36 dBm shall apply.
(d) On any frequency removed from the assigned frequency by more than 75 kHz, the attenuation of any emission must be at least 43 + 10 log (Pwatts) dB. [77 FR 61538, Oct. 10, 2012]