800Watt very high power prison jammer with cooling fan system for 3g/4G/GPS/AMPS,CPJ6022 Features: 1)Use stronger and longer External Omni-directional antennas,all the TX frequency covered down link only 2)The latest design and Good cooling system with cooling fan inside 3)365 days non-stopped Work 4)Good quality 4-7 bands high power prison Jammer, Jamming for all mobile phone 2G,3G,4G signal and VHF/UHF Walkie-Talkie,WIFI,GPS bands.etc. 5)VSWR circuit protection to ensure system will not burn out should there be antenna short circuiting or disconnection 6)Outdoor waterproof metal alloy case design avoiding the sabotage, Specification: 1.antennas: external omini-directional or high gain directional panel antenna 2.Jamming range:up to radius 400meter @ -75dBm depending on the mobile service provider s network condition); 3.Total output power:: 75-250W select any 4-7 bands 15-50Watt per band for your require, 4.Power supply :(1)AC110-240V (2)DC27V 5.Signal source: Synthesized Operation 6.Temperature: -10 to +508.Humidity: 5% to 80% Package information : Device Size: 52X30X19cm not including antenna Net Weight:18kg not including antennaCarton Size: 47x27x60cm/1PCS Gross Weight:25KG Output port :4-7 ports optional Frequency for select :1:CDMA851-894MHz,2:GSM925-960MHz,3:DCS&PCS1805-1990MHz,4:3G 2110-2170MHz,5:VHF135-174MHz,6:UHF400-470MHz,7:4G1LTE725-770MHz,8:4GWimax2300-2400MHz OR 2500-2690MHz,9:WIFI2400-2483MHz,10:GPS1570-1580MHz,11:433MHz 12:315Mhz,13:LOJACK167-175MHz,14:4G1700,15:GPSL2L5:1170-1280 ,16:GPSL3L4:1370-1390 etc.