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*Code Division Multiple Access (CDMA).*Code Division Multiple Access (CDMA)RXBW = Receive BandwidthThe FCC is trying to enact a maximum 12.5 kHz bandwidth across the private land mobile bands between 150-174 and 421-512 MHz, and increases available channels by creating new ones between existing channels. As of 2013 the FCC mandated that all current licensees must be fully operational on 12.5 kHz equipment. The FCC is trying to enact a maximum 12.5 kHz bandwidth across the private land mobile bands between 150-174 and 421-512 MHz, and increases available channels by creating new ones between existing channels. As of 2013 the FCC mandated that all current licensees must be fully operational on 12.5 kHz equipment. On January 1, 2013, all public safety and business industrial land mobile radio systems operating in the 150–512 MHz radio bands must operate using minimum 12.5-kHz equivalent efficiency technology, i.e., at least 9.6 kbps throughput per 12.5-kHz channel. This mandate is the result of an FCC effort to ensure more efficient use of the spectrum and greater spectrum access, which effectively ban use of coding gain schemes for frequencies below 512 MHz in U.S.