CDMA BC3 (JTACS)
CDMA BC3, also known as JTACS, operates within the frequency band of 887 to 925 MHz for the uplink and 832 to 870 MHz for the downlink. This band class is used for cdmaOne and CDMA2000 mobile phones and other mobile devices. The duplex spacing is -55 MHz, indicating that the downlink frequencies are 55 MHz lower than the uplink frequencies.