The Stealth Sound Barrier is a unique system for providing protection for human’s speech. Not all listening devices can be detected by existing methods. Remotely controlled radio microphones, wired microphones, passive resonators, miniature voice recorders – practically all these devices cannot be detected by conventional methods. Even a modern cellular phone may contain a digital voice recorder; this means that any phone lying on the desktop could be used by an adversary to record a conversation or transmitting any acoustic information.

Bearing the above points in mind, it is extremely important to have a reliable device protecting private conversations not depending on their level of importance. The concept of The Stealth Sound Barrier is based on generating audio interference produced simultaneously with a human’s speech. The volume of this interference is higher than of a person’s voice; therefore neither a listening device nor a recorder is able to pick it up the actual human speech.

The generated audio interference cannot be cleared by any noise-clearance methods. At the same time the produced interference does not create any inconvenience to the participants of the negotiation wearing to the special headsets. The Stealth Sound Barrier headset allows users to hear each other with crystal quality.

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The Stealth Navigator Pro is the most advanced TSCM RF Analyzer for detecting and eliminating illegal Wireless Cameras and eavesdropping transmitters.

It can detect not only analog RF A/V signals but also digital signals such as CDMA, GSM, 3G, Wi-Fi and Bluetooth signals use the advanced bugs.

Main Features

• Detecting RF Audio Signal

-    Detects Wide-Band RF signal and outputs it as audible like a FM radio.

-    Demodulates the detected AM/FM/SSB/CW signals and saves automatically.

-    VLF Convertor: Test Carrier signal on AC power line and telephone line.

• Detecting RF Camera Signal

-    Detects and demodulates Wide-Band RF video signals and displays on LCD.

-    Scanning time within 30 seconds: 900Mhz ~ 3000Mhz, 5000Mhz ~ 6000Mhz

-    Saves the detected RF video signal and replays or copies it to a memory media.

• Centralized Control

-    Connect a PC (Notebook PC) to have additional control the receiver, scanner, GPS map and Direction Finder.

• Spectrum Analyzer (option)

-       This spectrum analyzers and measurement receivers are compact and simple to use.

-       With the built-in RF preamplifier, RF attenuator, and temperature compensation, you can now make quick, accurate RF measurements in the lab or in the field.

-       Using recent innovations in RF technology, it has the sensitivity, accuracy and dynamic range you’d expect in a unit many times its cost.

• Detecting 2G & 3G Cellular Phone/ Wi-Fi/ Bluetooth Signal (Option)

-    Detects WCDMA (European 3G) up to 50 feet

-    CDMA (American 3G), GSM, iDEN, PHS and AMPS up to 70 feet.

• Doppler and GPS Direction Finder (Option)

-    Displays the direction of RF transmitter on PC screen.

-Connect an external PC (laptop) via RS-232port and display the location and draw plots on Google Earth screen to search the RF transmitter during by moving its location.

• Easy and Convenient Detecting Function

-    The customized probe helps to search and remove the RF bugs easily.

• Custom build capacity: More functions can be added



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The Stealth SM2020 + TRN600S

Portable Audio Jammer and Speech Protection System

The Stealth SM2020 is the most advanced portable audio jammer andspeech protection system which protects you against listening and recording devices. The Stealth SM2020 creates sound barrier interference which masks your speech and any sound to be extremely difficult or impossible to extract the original content from the noise.

When it is used in the correct manner, The Stealth SM2020 will protect you from;
• Voice recorders(tape and digital)
• Microphones, wireless microphones
• Stethoscopes, laser listening device
• GSM/Buletooth/Wi-Fi transmitters, etc.

Main Functions
1. Sound Masking (Audio Jamming)
The 2 channel chaotic noise ( Distortion + Reverberation) in a random sequence secures your privacy and information from recent hi-tech speech extraction software.
• Main Speaker: 500 mW
This built-in speaker creates sound barrier interference against listening and recording nearby its location.
• Sub-Transducer: 700 mW x 2
This 2 special transducers (TRN600S) can be installed on window, wall, partition, ceiling and hard floor and create chaotic noise with random vibration depending on the output of noise to protect your speech from eavesdropping and listening.

2. RF Detector: 70 MHz ~ 3000 MHz
The Stealth SM2020 has built-in RF detector to detect any active wireless microphone or covert camera and warns with a beep sound or LED.
• Detection distance: up to 3 M (10 feet)
• Sensitivity control capability

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The Stealth AX

Specifications

• Low Band (AX Module)
  • Monitoring RF Audio Signal
  • Sweeping Time: Less than 5 seconds
  • Frequency Range: 25MHz ~ 1300MHz
  • Receiving Mode: WFM, FM, AM
  • Remote Function: Remote setting & Monitoring
  • On-site confirmation - Listening the demodulated sound
  • Transmission Data
    • ID, Frequency, Date/Time
    • Sound



The Stealth VX

• High Band (VX Module)
  • Monitoring RF Audio/Video Signal: 0.9~3GHz, 5~6GHz
  • Sweeping Time: Less than 30 seconds- Receiving Mode: WFM, FM, AM, NTSC and PAL Standard
  • Remote Function: Remote setting & Monitoring
  • On-site confirmation - Watching the demodulated images
  • Transmission Data
    • ID, Frequency, Date/Time
    • Sound, Video signal (MPEG4, JPEG)



• Noise Generator
  • Preventing Laser Eavesdropping
    • Noise Generator - 2 Ch Random White Noise
    • Transducer line breaking alarm & transmission
      • Automatic transducer line cutoff alert
  • Remote volume adjust control



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TRN 600 is the new generation of transducer designed to increase the performance of Noise Generators. TRN 600 and TRN 600S are a specially designed Transducer used to inject acoustic noise into walls, finished ceilings, windows, plumbing, and air ducts.



Features

• TRN600 – Piezo output
• TRN600S – Speaker output with Vibration capability
• Light weight – 45 g (TRN600) 50g (TRN600S)
• Easy to connect – RJ11 Jack : Compatible with any Noise Generator
• Compact size – W 60 mm x H 24 mm
• Direct attachment to window or wall produce more efficiency of output and reduce leaked noise



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