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There are many different types of spectrum analyzers including benchtop models, portable models, handheld units, and Software Defined Radio (SDR) units. While there are many different ways of comparing these products, most choose to focus primarily on the traditional spectrum analyzer specifications such as:

  • Frequency Range
  • SFDR – Spurious Free Dynamic Range
  • DANL – Displayed Average Noise Level
  • Phase Noise
  • Sweep Speed
  • Frequency Resolution

However, when using a spectrum analyzer to search for unknown signals which may pose a threat, mobility is another very important factor to consider. When doing a security survey, it is vital to be able to quickly pick up the spectrum analyzer and walk around an environment to compare RF signal strength in different locations.

Continue reading “The Importance of Mobility”

TALAN 3.0 Telephone and Line Analyzer Resistance Testing

Research Electronics International is pleased to announce the TALAN 3.0 Telephone and Line Analyzer with enhanced VoIP analysis and new earth/shield/ground testing. The portable TALAN 3.0 analyzes digital, analog, and VoIP phone systems and wiring for faults, anomalies, and security risks using a suite of telephone tests including an automatic switching matrix.

What’s New in TALAN 3.0:

  • VoIP traffic analysis on phones, networks
  • Patent-pending FFT algorithm for visual display of VoIP traffic
  • Earth/Ground testing for modified connections to extraneous wiring
  • Advanced input panel to accept and test shielded ethernet cables

Continue reading “Introducing the TALAN 3.0”

TALAN 3.0 Telephone and Line Analyzer VoIP AnalysisThe TALAN Telephone and Line Analyzer provides many automated tests in a single product to detect and locate illicit surveillance devices (wiretaps and electronic surveillance/eavesdropping products) on telephones, communication and other types of wiring, and is the only product of its kind in existence.

Developing technologies and growing acceptance of VoIP telephones have also brought increased opportunity for exploitation.  A VoIP phone can be programmed to pass VoIP data, even when it appears inactive; for example, a VoIP phone can be compromised by someone with network access (e.g. IT personnel, hacker) and the ability to turn the microphone on and off, effectively collecting and transmitting room audio undetected.

Continue reading “New TALAN 3.0 Offers Advanced VoIP and Shielded/Earth/Ground Cable Tests”

The Threat:

Arguably one of the biggest threats of confidential conversations leaving a room or area of a facility is the ordinary loudspeaker or well-shielded microphone. When conducting a proper TSCM investigation, it is important to inspect all building wiring to ensure that no conductors are being used to transport stolen audio or video information. It is fairly simple for someone to attach a microphone to any two existing conductors present in an area and pass audio through a speaker “down the line” to be received elsewhere.

Continue reading “Are You Being Overheard?”

One of the most common specifications for comparing spectrum analyzers is sweep speed. It is important to understand exactly what resolution is being considered when specifying sweep speed. To start the discussion, let’s look at the OSCOR Spectrum Analyzers which sweep from 10 kHz to 24 GHz in 1 second. Therefore, the sweep speed is 24 GHz/sec with a frequency resolution of 12.2 KHz. This means that every second, it produces a trace of 24 GHz span with 2,000,000 data points. Consequently, if you are using an OSCOR and only sweeping 8 GHz, then the sweep speed is 24 GHz/sec, but now the unit covers the 8 GHz span 3 times in one second.

Continue reading “Spectrum Analyzer Sweep Speed”

REI is pleased to announce a training partnership with Eavesdropping Detection Solutions (EDS) to present technical surveillance countermeasure (TSCM) training courses on a regular basis in South Africa. The strategic partnership between REI and EDS means that many TSCM practitioners from outside of the USA who cannot afford to travel to the United States, or for whom it is inconvenient, will be able to receive the same high level training and certification in South Africa.

Continue reading “South Africa TSCM Training Courses”

REI General Manager, Tom Jones, recently met with Tennessee Senators Lamar Alexander and Bob Corker in Washington DC, along with Stacie Oliver, Senior Professional Staff Member, Senate Committee on Foreign Relations, to discuss export control reform. The meeting also provided Jones an opportunity to express his appreciation for their help on behalf of REI.

Continue reading “Export Restrictions Lifted”


Research Electronics International (REI) is pleased to announce the ANDRE™ Advanced Near-field Detection Receiver, a hand-held broadband receiver that detects and assists in locating nearby RF, infrared, visible light, carrier current and other types of transmitters.

ANDRE Advanced Near-field Detection Receiver Front ViewThe ANDRE detects signal activity in its vicinity and displays changes in signal strength over time, allowing users to quickly locate the source of transmissions. The ANDREs frequency counter provides quick identification of the signal frequency and outputs additional information to an automatic signal list generator.

Antenna probes included with the ANDRE can be used to sweep rooms and objects in search for known, unknown, illegal, disruptive, or interfering transmitters from 10 kHz to 6 GHz.

A 3.5 inch touch screen displays all of the operation controls and frequency activity. The frequency chart provides advantages over other RF detectors by showing rising and falling signal strength over time. Eight displayed time intervals can be selected ranging from 5 seconds to 24 hours. This helps identify pulsing signals and shows historical peaks, to ensure nothing will be missed. Manual and automatic threshold settings notify the user when a signal exceeds defined strength levels with haptic, audible, and visual alerts.

Continue reading “New Hand-held ANDRE Quickly Detects Transmitters”