http://www.phonejammer.com/product.php?productid=16148&cat=253&page=1
Introducing the ultra-high power phone jammer; the most sophisticated digital cell phone jammer of its class, with tough aluminium casing, SWR protection, adjustable 50 Watts per channel output power, and up to 4 channels available on request. This waterproof and weatherproof unit is ideal for outdoor locations, such as prisons, courts of law, embassies, military installations, etc., or for halls or large rooms. It is supplied with a directional patch or omni dipole type antenna. Model no. PJ013 Weight 30.00 kgs Colour Black Dimensions 220 x 470 x 620 mm Frequency 850 - 2200 Mhz Input power 110~240 Vac Jamming area up to 750 meter Operating location Worldwide RF output power 200 Watt Standard (IEC529) IP68 Antenna IP68 Jammer Price start at $7995.00