TXA S C TechnologyAdvanced Signal Clarityuh012sx12342314UNIDEN Model uh012sx UHF CB RadioIndicatorsIndicatorsLEDIt is turned on when transmitting condition.LEDIt is turned on when receiving a signal or decoding a CTCSScode. It blinks while receiving a signal in scan mode.LEDIt is turned on when the current displayed channel has CTCSSset. It blinks when the CTCSS code is decoded OK.LED (40)Indicates the Channel Number.TXBUSYCTCSSCHBUSYCTCSS4