Catalogue of the company AUDIOTEL.

AUDIOTEL company catalog.

Received in May 1998.

AUDIOTEL company catalog

Search equipment for detecting technical control devices

Detection of radio bugs

Scanlock ECM Plus
201-360

Described by leading US publications as “an essential part of the counter-monitoring device suite,” the Scanlock provides complete protection against radio bugs from 10 kHz to 4 GHz and beyond. Its versatile Quick Set Mode allows it to acquire a new signal in a fraction of a second and determine its frequency. The Scanlock ECM Plus comes with a full complement of accessories and continues to be the device of choice for government search agencies and security professionals worldwide.

• Complete Protection Against All Types of Radio Bugs
• Preset or user-defined operating modes
• Excellent sensitivity and consistent performance over a wide frequency range
• Measuring frequencies of captured signals
• Silent operation, remote alarm, saving operating time
• Easy to use and portable

Delta V ESM
201-042

The Delta V ESM measures the difference in field strength between its two antennas. Using this gradient effect, the Delta V ESM responds to local signals and rejects stronger signals coming from outside the search area. This makes it ideal for locating bugs and basic EMC compliance measurements.

• Wide frequency range from 20 MHz to 4.2 GHz and above with flat frequency response
• Dynamic range greater than 50 dB
• Small size, portable, easy to use

Scanlock Select Plus
201-301, 201-165, 201-178

The Scanlock Select Plus system uses new concepts in RF spectrum analysis. Using the Cerberus-2 RF analysis software, you can use your existing PC to unlock the full capabilities of the instrument's RF scanning method to detect RF emissions that are difficult or very time-consuming to detect by other methods. This complete system includes the Scanlock Select Plus search receiver, a selection data bank with memory for up to 12 scans, and the Serberus-2 software, which is fully compatible with Windows 3.1.

• Stores a record of RF sweep signals in memory
• Performs comparative measurements over a period of time or over a survey area
• Facilitates detection of digitally modulated and spread spectrum devices

A significant portion of installed eavesdropping devices use some kind of radio circuit to transmit the received information to the listening post. Unfortunately, it is impossible to predict the frequency, type of modulation or time frame of the eavesdropping devices. Therefore, it is important that the equipment used for detection is as flexible and sensitive as possible. For example, there are detection systems that base the search solely on the acoustic feedback technique. But such a technique does not work in the presence of many types of eavesdropping devices that use one unusual modulation or their combination, encryption, time switching or remote control methods. Scanlock detects all such types of radio bugs and not only them.

The search for radio bugs is carried out relatively unambiguously.

By sweeping the antenna over the area under investigation, the operator should listen for any unusual or unidentified signal. By listening and analyzing the signals, the operator can determine whether the signal is “legitimate” or a possible signal from a radiating eavesdropping device. Once identified, the operator can also determine the location and operating frequency of the eavesdropping device. Importantly, the sweep is completely silent, so the eavesdropping party will be unaware that they have been exposed.

The advantage of a broadband RF analysis system like Scanlock over conventional scanning or spectrum analysis is that it provides significantly faster analysis in the very crowded frequency range from 10 MHz to 4 GHz. This capability is further enhanced in the new Scanlock Select Plus system, which allows the operator to save a recording of the sweep for later comparison both over time and when changing locations.

We are committed to keeping up with the evolution of eavesdropping technology. Because our products outperform all others in terms of frequency response, sensitivity and frequency stability, only Scanlock

ESM Plus/Select Plus and Delta V ECM provide a positive response to the latest types of radio bugs, and continue to provide reliable protection against conventional radio bug eavesdropping methods.

Broom ECM
204-212

The Broom ECM is a non-linear, second harmonic locator that detects and locates any buried electronic device, whether it is powered or not. In operation, the locator's antenna head oscillates near the surface being examined, and an increasing tone indicates the possible presence of a hidden electronic device. The Broom ECM has variable output power, adjustable squelch, and AM/FM acoustic feedback to further enhance its detection capability.

A nonlinear junction is characterized by introducing distortions into the electrical signal passing through this junction. If a strong high-frequency radio signal is applied to this junction, an electric current is generated that passes through this junction. The nonlinearity of the junction causes distortion of the primary signal, creating harmonics of the affected frequency. Nonlinear junctions are found in semiconductor components such as diodes, transistors, and integrated circuits. Nonlinear junctions also occur naturally and can be found in rocks, crystals of building materials, or metal oxide compounds. The first work on detecting nonlinear junctions dates back to the 1940s, to detect rusted rivets in the metal hulls of ships.

With the advent of semiconductor technology in the 1960s, it became clear that the same techniques could be used to locate electronic devices. It was also discovered that further analysis of the harmonics of the return signal provided more information about whether the detected device was electronic or non-electronic. In recent years, analysis of the audio signals on the AM component of the return signal has provided another method of distinguishing between electronic and non-electronic devices. The use of higher and more variable power, digital receivers and phase-locked transmitters, and sharper indicators have improved detection capabilities and reduced false alarms caused by non-electronic devices.

Non-linear locators are an extremely powerful search technique in addition to the usual physical search procedure. However, common sense should be used when using this technique. It is not advisable, for example, to sweep an area where there is a large amount of ordinary electronic office equipment or where non-linear elements of a natural nature may be present. It is better to limit their use to those areas where a positive return oscillation will require explanation and further investigation. In other words, it makes sense to scan furniture or wall areas with a non-linear detector, but not a suspended ceiling, where a large number of cross-shaped joints will behave as natural non-linearities. In this case, a physical inspection of the ceiling space will be a quicker method.

Knowing that users need different types of electronic detection devices, we manufacture the best in NLJ technology. From the low-cost but powerful Broom ECM to the world's best Super Broom Plus, we manufacture NLJs for every user. All of our NLJs are built on the same basic block technology with a synthesized, phase-locked receiver and transmitter, variable output power (up to 3 watts for the Super Broom Plus), an easily extendable search antenna shaft, are portable, and have an internal battery that lasts for at least 4 hours of continuous operation at 300 mW output.

Super Broom
204-324 ECN, 204-360 Plus

The Super Broom is an advanced non-linear locator with simultaneous analysis of the second and third harmonics of the signal returning from the object under study. The transmitter and two receivers are built using a frequency synthesizer, thereby completely eliminating any frequency offset, since the receiver is uniquely tied to the transmitter frequency. By comparing the second and third harmonics of the return signals, the operator can determine whether the signals are coming from an electronic or non-electronic source. Both versions of the non-linear locator have variable radiation power (from 1 to 300 mW — ECM, from 1 mW to 3 W — Plus), which allows for precise target localization. Super Broom is completely portable and comes ready to use, in a robust case suitable for transportation on aircraft, with all necessary accessories.

• Detection of 2nd and 3rd harmonics
• Clear indication of individual and combined return oscillations
• Exceptional sensitivity
• Display head for maximum operator convenience
• Easy to use and portable.

TCM-03
203-003

Designed for the experienced security professional, the TSM-03 cable line tester provides a highly effective way to check cables and wires for eavesdropping devices. It includes a sensitive audio amplifier for detecting signals from microphones, a built-in tone generator for activating remotely controlled devices, and a digital meter for indicating voltage and current levels in the cables being tested. With this, you can test telephone lines for regular telephone connections.

• Checking for the presence of microphones and transmitters
• Tone generator
• Digital indication of currents and voltages
• Suitable for all types of cables, from power lines to telephone cables.

Cable Tracer 111
203-009

Equipment for tracing a cable pair through a building. The operator can follow the length of the cable using a hand-held receiver to detect the signal sent by a generator connected to one end of the cable.

CMIS-09
402-004

A set of technical devices specially selected for the professional detectorist, placed in a portable case. Includes a set for UV marking, 2 mirrors, a set with four detectors and a digital voltmeter.

While it is generally accepted that checking cable and telephone lines is the most labor-intensive of all search operations, there are ways to make these operations more efficient and less labor-intensive. It is also important to understand that a well-designed wiretap device cannot be detected using electronic measurements; it can only be found by visual searching.

Therefore, the time spent monitoring cable and telephone lines is better spent establishing preventative measures and ensuring the physical integrity of communication lines. The ultimate goal should be to locate and monitor all cable lines within your building and to ensure that all of your communications lines to the outside world are as secure as possible. This may mean installing high-quality encryption equipment on your most important communications lines.

Physical and RF Search Kit
201-004

Designed for basic search operations, the kit includes the Delta V ECM RF Detector and the CMIS-09 Search Tool Kit.

Entry-Level Search Kit
201-001

This kit includes the tools needed for physical and RF search, as well as the Broom ECM non-linear locator, which provides additional capabilities for searching for hidden electronics. The complete kit includes the Broom ECM non-linear locator, the Delta V ECM detector, and the CMIS-09 search tool kit.

Professional Search Equipment Kit
201-002

Ideal for an in-house or agency search team, this kit includes everything needed to perform electronics searches using physical, RF, NL, and cable inspection equipment. The complete kit includes the Scanlock ECM Plus RF Locator, Broom ECM NL Locator, TCM-03 Cable Tracer, and CMIS-09 Physical Search Kit.

Advanced Search Kit
201-003

This kit offers the latest in search technology at a cost/performance ratio unmatched by other companies. For the price of a single spectrum analyzer, this kit includes everything a professional searcher needs to perform advanced electronics searches. This complete kit includes a Scanlock Select Plus receiver with data bank and PC with Cerberus 2 RF Analysis software, Super Broom Plus non-linear locator, TCM-03 cable tracer, Cable Tracer III cable tracer and CMIS-09 search tool kit.