WOLLO UNIVERSITY Kombolcha Institute of Technology Department of Electrical and Computer Engineering Electronics Communication Stream Design of Dual Band Mobile Jammer for GSM 900 and GSM1800 Name ID No Mulushewa Abate WOUR/0811/07 Trhas Assefa WOUR/1062/07 Haileyesus Fekadie WOUR/0835/06 Dinku Gebeyehu WOUR/0344/07 Advisors Mr. Eyob.G & Mr. Jolan.B