High Power Cellphone Jammer
A high power cellphone jammer blocking mobile signal within an area, used in prisons, examination halls, secure facilities and government installations where mobile communication must be prevented.
Jammers are restricted or prohibited equipment in most countries, and operating one without authorisation is an offence in nearly all of them, so the first requirement is the legal authority to use it rather than any technical specification. Where use is authorised, the specification concerns the frequency bands covered and the effective radius, which must be contained within your own premises. Contact EMC Machines Manufactures with your authorisation, the area to be covered and the bands required.