2014. Here are the rules. Approval in the UK by Ofcom and the UK market In May 2011, Ofcom stated the following: Installation or use of repeater devices (as with any radio equipment) is a criminal offence unless two conditions are satisfied: That the equipment is CE marked, indicating that the manufacturer has declared that it complies with all relevant EU regulatory requirements, including the Radio equipment and Telecommunications Terminal Equipment (R&TTE) Directive; That the use of the equipment is specifically authorised in the UK, either via a licence or by regulations made by Ofcom to exempt the use from licensing. Under WT Act 2006 section 1.15, the wireless act also allows an exemption if the device does not "involve undue interference with wireless telegraphy". This is expected to follow the US-style regulations where a mobile repeater must have protection built in against interference. Ofcom stated that "Repeater devices transmit or re-transmit in the cellular frequency bands. Only the mobile network operators are licensed to use equipment that transmits in these bands. Installation or use of repeater devices by anyone without a licence is a criminal offence under Section 8 of the WT Act 2006." Repeaters operating in rural and less densely populated areas do not pose a quantifiable problem. See also Base Station Subsystem Femtocell – type of cellular repeater Home Node B – a femtocell Coverage noticer Dead zone (cell phone) Waves Cel-Fi Signal Booster Repeater References Radio electronics Mobile technology Telecommunications infrastructure