It utilizes an out-of-band data carrier for its enabling map instructions and an in- band tag for authorization of the cradle dcscrambler. ... If anyone attempts to steal the Viper stereo, the cara#39;s hom will sound at one- second intervals for a period of five minutes. The noise starts as soon as two or more wires to the rear of the unit have been cut or disconnected. ... mechanism, 18-station memory preset tuning ability, auto reverse, auto seek and scan and an Automatic Music Select System.