Corporate Investigations

TSCM - Counter-Electronic Surveillance

Investigations Direct offer an industry-leading Technical Surveillance Counter Measures sweep, utilising the latest radio and telecommunications line analysing equipment.

Our team will survey your premises assessing the threat and providing professional strategies to give complete peace of mind. A comprehensive report detailing the technical search and our recommendations will be presented on completion.

Where a device is found, Investigations Direct will liaise with the client and trace the unit to source.

Our TSCM survey is carried out in three phases:

Physical Sweep

Our team will carry out a thorough physical sweep throughout the survey area, utilising trained personnel who are familiar with the various types of illicit monitoring devices.

The search involves the examination of furniture, electric and computer data wiring, plugs, outlet sockets, heating and air conditioning ducts, suspended ceilings etc.

Radio Sweep

We will then conduct a comprehensive radio frequency sweep throughout the premises to locate any illicit transmitting audio, video and/or data devices. Identifiable tone sources are deployed throughout the survey area in order to activate any sound activated transmitting devices. Our equipment will then scan the frequency range of 1KHz to 15 GHz.

In the event of the system locating one of the identifiable tone sources, it would confirm the presence of a transmitter within the survey area. If a transmitter is identified as being present, then using a sensitive probe we will locate the exact location of the device.

The receiver input is automatically connected to the 240 Volts main supply, in order to detect any mains carrier current eavesdropping devices.

Dependant on the size of the building, we may need to carry out several of these sweeps throughout the survey area.

Telecomms Sweep

Investigations Direct have invested heavily in the latest state of the art Telephone and Line Analyser providing a complete integrated suite of tools to analyse, inspect, and test analogue and digital telephone lines (and other wiring) for taps and other eavesdropping devices.

Our telecommunications sweep incorporates several types of telephone line tests including common tests such as voltage, current, resistance, and capacitance tests, as well as new technology such as line NLJD, FDR Frequency Domain Reflectometry, and Digital Demodulation.

This ability to perform several different tests allows the comparison of the results from tests on multiple phone lines.

For further information about our Counter-Electronic Surveillance services or to discuss a particular matter or situation, please contact Jon Fawcet on +44 (0)20 7917 2939 or by email.