12 Antennas Adjustable 4G Mobile Phone Signal Jammer WiFi GPS VHF UHF RF ... which can cut off signals of 3G 4G all mobile phone signals,Website:http://www.jammerwill.com, WiFi, GPSL, ... this High Power 12 Antennas Adjustable 3G 4G All Mobile Phone Signals Jammer WiFi GPS VHF UHF RF Signal Blocker ... GPS(L2-L5): 1170-1280MHZ- 868MHz■Total output power: 25-30W■Jamming range: Up to 40m, the jamming radius ...