... signals: GSM, AMPS, HCMTS , CDMA , TDMA ,TACS , PCS Jet-990 Mobile Phone Intercept SystemThe Jet-990 is a tactical 'off air' GSM ... , AMPS, HCMTS , CDMA , TDMA ,TACS , PCS , Mobile phone Intercept system, designed to intercept all cellular telephone , This system ... jammer out of the gift box. 2.Plug in the antenna according to the frequencies. 3.Plug in the AC adaptor ...