For absolutely jamming any cell phone signal and VHF,UHF signal, there is no stronger or more efficient solution than the 6 Antenna VHF, UHF, cell phone jammer . which can block all the signals of cell phones like GSM, CDMA, DCS, PCS, 3G and so on.
-CDMA 850MHz-894 MHz
-GSM 925MHz-960 MHz
The jamming distances we mentioned on website are for customer’s reference only. The actual jamming distance will be varied depending on the signal strength and the use location and if full charges, etc