Radio Interference Investigation

ComReg’s Spectrum Intelligence and Investigations unit investigates cases of radio interference. Interference can affect any radio service, including but not limited to, emergency services, air traffic control, mobile phone services, business radio, microwave links and broadcast services.

Unintentional interference can be caused by incorrectly or poorly installed radio systems and by faulty or non-compliant electrical or electronic equipment. Unlawful devices, such as mobile phone repeaters are a common source of interference. Any electrical or electronic device has the potential to be a source of radio interference given the right circumstances.

Where a member of the public believes that their telephone, broadband or mobile phone service is experiencing radio interference this should be reported to the service provider. If the service provider determines that an external interference issue is occurring it will contact Spectrum Intelligence and Investigations directly by emailing In such cases Spectrum Intelligence and Investigations can only deal with the network operator and updates cannot be provided to third parties or members of the public.

Licensed operators, having had a competent person (e.g. a radio installer/supplier) check their own system for faults, may report cases of radio interference to Spectrum Intelligence and Investigations directly by emailing

Where a member of the public is experiencing disruption to Saorview or satellite television reception, a television reception system installer should check the installation for faults. System faults such as damaged cables & aerials are common sources of disruption to reception. Should it be determined that the disruption is caused by external interference, this should then be reported to Spectrum Intelligence and Investigations directly by emailing

Please note that ComReg does not charge a fee for investigations of suspected interference.

  1. In order to respond to complaints of RFI more effectively, ComReg has introduced a new radio frequency interference (“RFI”) reporting protocol for all complainants. This protocol requires complainants to provide more focused and in depth information to assist ComReg in its triage and prioritisation of complaints. For convenience, the mandatory requirements for opening a complaint of RFI are set out in this PDF.
  2. This new protocol makes clear that ComReg cannot investigate a report of RFI unless it is satisfied that the interference is ‘harmful’, outside of the complainants control and that all reasonable steps have been taken by the complainant to minimise the effect.
  3. Once a complainant is satisfied that the interference it is experiencing is, in its view, harmful, outside of its control and that the affected apparatus is functioning correctly, then a complaint can be submitted to accompanied by the supporting material as required in this PDF document below.
  4. ComReg acknowledges all complaints received to on the day of receipt. Complaints received outside of work hours are acknowledged on the next working day. Please note: ComReg’s hours of work are 9:00 am to 5.30 pm, Monday to Friday. ComReg staff do not operate on an “on call basis”.