REI

The REI MESA 2.0 (Mobility Enhanced Spectrum Analyzer) is a compact, handheld signal analysis system manufactured by Research Electronics International (REI) for Technical Surveillance Countermeasures (TSCM), RF interference troubleshooting, and security investigations. Engineered specifically for mobility, the instrument allows field operators to easily carry it throughout a target facility to locate illicit eavesdropping devices, RF transmitters, cellular activity, and unauthorized wireless signals. The performance of the MESA 2.0 centers on its rapid sweep capabilities and flexible frequency coverage. The baseline receiver operates across a range of 10 kHz to 6 GHz, which can be extended up to 12 GHz using the optional Down Converter antenna. Powered by a swept-tuned superheterodyne receiver architecture, the MESA 2.0 achieves sweep speeds exceeding 200 GHz per second. It features an Instantaneous Bandwidth (IBW) of 25 MHz and a dynamic Resolution Bandwidth (RBW) that auto-adjusts between 0.038 kHz and 312.5 kHz depending on the active span. To help detect weak signals, the unit incorporates a +15 dB preamplifier along with selectable attenuation settings (0 dB, 10 dB, 20 dB, or Auto). To handle diverse operational scenarios, the MESA 2.0 provides multiple dedicated software modes. In standard Spectrum Analyzer mode, operators can view live, peak, cached peak, and average traces, alongside raster waterfall and persistence displays to detect intermittent or frequency-hopping signals. The patented SmartBars™ mode utilizes non-linear bar graphs to highlight new RF energy relative to a baseline reference, offering a quick visual path into deeper spectrum inspection. The Mobile Bands mode monitors targeted frequency bands such as Wi-Fi or cellular networks and includes automated jammer and interference detection logging. Additionally, dedicated Wi-Fi and Bluetooth modes analyze access points, connected clients, BLE devices, and trackers (such as AirTags), providing RSSI signal-strength meters to help physically pinpoint hidden transmitters. A standout feature of the MESA 2.0 is its automatic probe recognition system, which automatically identifies connected REI smart antennas and configures the appropriate frequency spans without manual input. Beyond standard RF sweeps, the system supports comprehensive multi-threat detection—including Carrier Current, Acoustic Leakage, Infrared, Visible Light, and Ultrasonic probes. It also provides built-in AM and FM audio demodulation, integrated speakers, and standard audio ports. In terms of ergonomics, the MESA 2.0 is designed for extensive field use, weighing just 2.4 lbs (1.1 kg) with dimensions of 5 × 8 × 2 inches (13 × 20 × 5 cm). It features a 7-inch capacitive touchscreen with protective overmolding, an adjustable hand strap, and a kickstand. The system is powered by removable lithium-ion batteries that deliver approximately 3 hours of operational runtime per battery. For connectivity and data management, the MESA 2.0 includes two USB 2.0 Type-A ports, a Gigabit Ethernet port supporting remote VNC control, and an external USB GPS dongle for logging spatial data alongside spectral findings.

The REI OSCOR Max is a portable spectrum analyzer designed specifically for detecting, identifying, and locating electronic transmitters and signals. Manufactured by Research Electronics International (REI), this instrument provides technical surveillance countermeasures (TSCM) professionals and security personnel with high-speed signal analysis capabilities to uncover hidden electronic threats across a vast frequency range. At the core of the OSCOR Max is its RF performance and speed. Operating from 10 kHz to 43 GHz, the unit continuously sweeps the spectrum at an estimated speed of 1100 GHz per second with a 10 kHz resolution. This rapid sweep rate, combined with a 125 MHz Instantaneous Bandwidth (IBW) and a 90 dB dynamic range, ensures that short-duration or transient signals are captured quickly. The system includes a built-in, auto-switching antenna array capable of performing 125 switches per second, allowing continuous monitoring across the entire spectrum without requiring manual antenna changes. For signal discovery and intelligence gathering, the OSCOR Max offers dedicated analysis tools. It features automated detection for Wi-Fi and Bluetooth devices, alongside SmartBars™ and Discrete Bands mode, which allow operators to set up custom frequency bands for targeted sweeps. The unit supports I/Q data recording directly to an internal 2 TB M.2 NVMe SSD for deep post-sweep analysis. For audio evaluation, it includes built-in AM and FM demodulation, integrated speakers, and standard audio outputs. In addition, the included Multi-Purpose Probe (MPP) expands its scope beyond standard RF to inspect carrier current, infrared, visible light, ultrasonic, coax, and magnetic leakage signals. The physical design of the OSCOR Max emphasizes portability and ease of use in field operations. Enclosed in a compact chassis measuring 16.2 × 10.6 × 2.3 inches (411 × 269 × 58 mm) and weighing 10.4 lbs (4.7 kg) with batteries included, it features a 13.3-inch high-resolution capacitive touchscreen interface. Operational flexibility is supported by dual hot-swappable lithium-ion batteries providing a minimum runtime of 2.5 hours, alongside USB-C PD charging and standard universal AC power options. For data transfer and peripheral support, the system provides standard connectivity including Gigabit Ethernet, Aux RF inputs (2.4 mm and SMA-compatible 2.92 mm), an SMA IF output, Micro SD, and USB 3 Type-A ports.

The ORION 2.4 HX introduces a new generation of Non-Linear Junction Detectors (NLJD) made to detect and locate hidden electronics regardless whether the device is radiating, hard wired, or turned off. Types of circuitry NLJDs detect include eavesdropping devices, recording devices, cell phones and other electronic contraband. The ORION 2.4 HX is available in 3.3-watt and 6.6-watt transmit power models. A completely new polycarbonate body includes a touchscreen display. The ORION 2.4 is hand held and compact when retracted and can extend to a full length of 58 inches for investigating hard to reach areas. The line of sight LED/OLED display provides visible feedback at any length.

The TTK (Tactical TSCM Kit) by Research Electronics International (REI) is a comprehensive, deployment-ready counter-surveillance sweep solution designed specifically for security professionals and frequent travelers who need to detect hidden eavesdropping threats on the go. Packaged inside a durable, hard-shell carry-on size case measuring 22 by 14 by 9 inches (56 by 36 by 23 cm) and weighing approximately 25 pounds (11.3 kg), the kit meets general travel requirements to ensure seamless mobility during tactical assignments. At the core of the TTK is a suite of REI’s proven Technical Surveillance Countermeasures (TSCM) tools engineered to locate illicit transmitters, hidden microphones, and covert surveillance equipment. For radio frequency analysis, the kit features the MESA Hand-held Spectrum Analyzer—capable of analyzing RF signals up to 6 GHz (or 12 GHz with its Down Converter)—alongside the ANDRE Broadband Detector, which provides near-field detection and localization of RF transmitters up to 12 GHz. To identify unpowered or hidden electronics regardless of whether they are active or inactive, the kit includes the ORION 2.4 HX Non-Linear Junction Detector. Complementing its wireless detection tools, the TTK provides advanced capabilities for inspecting physical and wired infrastructure. The CMA Countermeasures Amplifier is included to identify wired surveillance threats, while standard U.S. configurations feature a digital multimeter and an industrial thermal imager to detect hidden heat signatures and conduct electrical checks. By consolidating spectrum analysis, non-linear junction detection, broadband signal location, and audio amplification into a single portable package, the TTK delivers professional-grade technical security inspection capabilities in an easily transportable format.

The signal strength histogram displays RF levels over user-selected time intervals ranging from 5 seconds to 24 hours. The adjustable trigger level provides audio, haptic, and visual alerts when RF levels exceed the threshold. The ANDRE has a 90 dB dynamic range. With the Zoom view, a 30 dB portion of the range is displayed. This reduced scale enables users to easily see small changes in RF signal activity on the histogram. The frequency counter generates a list of signals that exceed the trigger level. The strongest signals rise to the top of the list and weaker ones fall off after the maximum number of signals is reached. Signals can be classified as Friendly, Threat, or Unknown. Double tapping any signal brings up more information. The ANDRE contains known regulatory or other uses of given frequency bands.