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Spectrum Monitoring
The TRCSL conducts routine frequency monitoring throughout the country on regular basis to ensure that use of spectrum complies with terms and conditions of the licenses and technical standards.  Monitoring process can identify/detect unauthorised emissions or resolve interference and  verify operational & technical parameters.

The TRCSL has authority to investigate interference to any licensed radio communicationsystem from other radio communication systems, unintentional emissions and active electrical apparatus & networks.Upon the issuance of licenses, the TRCSL is responsible to ensure the assigned spectrum is used in accordance with terms and conditions of the license.

The following underlying objectives are fulfilled by spectrum monitoring:
Ensure whether the authorized users operate the radio communication equipment in accordance with terms and conditions of their licenses;
Improve spectrum efficiency by determining actual frequency usage and occupancy, assessing availability of spectrum for future uses;
Ensure compliance with national spectrum management regulations to shape and sustain radio environments and user behaviour, maximising the benefit of the spectrum resource to society;
Protect authorized spectrum users  from harmful interference;
Examine the complaints of radio interference caused by emissions from licensed users or unauthorized users;

Identify the locations of unauthorized / illegal use of frequencies or radio equipmentthrough direction finding technique and signal analysis.


TRCSL Monitoring Facilities

TRCSL has established a number of fixed and mobile monitoring stations to monitor the frequency spectrum effectively in various frequency bands ranging from 3 kHz to 26 GHz. All the monitoring stations have been equipped with the State-of-the-Art integrated monitoring hardware& software to perform the monitoring activities.

Data collected through spectrum monitoring is used to determinethe spectrum occupancy and utilization for purposes of making assignments including the effects of spectrum reuse and band clearing efforts. Monitoring data is also used to support spectrum engineering activities including validation of tolerance levels, determining the probability of interference and development of band-sharing strategies.

An inspection team is available to ensure that radio equipment deployed satisfies relevant standards and their operation is  in accordance with the specified licence  conditions.

Resolving Interference

Interference may stem from authorized emissions causing unintended results such as spurious emissions. Interference may also be caused by unauthorized transmitters or radio equipment operating beyond technical specifications.

If an authorized user experience harmful interference from other radio systems, a complaint could be logged with TRCSL. The interference analysis may require complainants of interference to provide detailed technical data while reporting to TRCSL .

All interference complaints should be reported to TRCSL on the specified form which is available at the spectrum division of TRCSL and can also be downloaded from here. Complaint form should duly fill in all respects. If required information is not provided, TRCSL may not be able to investigate the harmful interference.

TRCSL will conduct ainvestigation on the complaint received and take necessary measures to eliminate the interference. TRCSL will inform affected user the outcome of the monitoring process and the subsequent action taken.