This IDC20012 InterComm Ghost Box device features variable speed random scan digital tuner, echo delay and volume, squelch, preamp volume, external antennae, anti-reception static disconnect( to reduce static at the expense of reception) and an IDC Static Charge Sensor. It scans randomly at upwards of 80ms @100mhz steps. Can be programed to scan faster as well as @ 200mhz,100mhz,50mhz and as little as 10mhz steps.Has full echo delay controls and squelch.