High Frequency Listening Devices Through Walls

Product Description

Product Description

 

Viking High-Strength Through-Wall Listening Device: A Comprehensive Introduction

Introduction

The Viking High-Strength Listening Device is an ultra-sensitive audio acquisition system designed for through-wall surveillance. Utilizing advanced solid-state vibration detection, this device captures and amplifies weak sound signals into audible audio. The system includes a control host, a high-sensitivity signal acquisition front end, premium low-power headphones, and a reliable power supply system, making it a robust solution for professional security and investigative applications.

Usage Requirements

Sound transmission occurs through solid, liquid, and gaseous mediums. However, acquiring obstructed sound signals is only feasible through solid materials. This device captures signals by making direct contact with solid surfaces, making it suitable for:

• Floors

• Ceilings

• Walls

• Concrete load-bearing pillars

• Glass doors and windows

• Solid wooden doors

• Metal cabinets

It is important to note that the device is ineffective on gaseous, liquid, or soft solid materials, as these do not efficiently transmit the vibrations necessary for sound acquisition.

Functional Applications

The Viking Listening Device is engineered for various security and investigative applications:

1. Surveillance & Intelligence Gathering

   • Captures weak signals from solid surfaces and converts them into audible sounds.

   • Detects sounds even through thick concrete barriers, enabling clear speech recognition for monitoring suspect activities.

2. Mechanical Sound Detection

   • Transmits signals through solid materials, allowing users to hear mechanical ticking sounds from timing devices.

   • Ideal for locating timed explosive devices by identifying characteristic ticking sounds.

3. Recording & Documentation

   • Enables audio recording without being affected by recording jammers.

   • Can be connected to digital recording devices for secure documentation of gathered intelligence.

Technical Specifications

1. Control Host

   • Dimensions: 170mm (L) x 96mm (W) x 33mm (H)

   • Includes signal reception, amplification, and output modules

2. Signal Acquisition Front-End

   • High-sensitivity active sensor

   • Dimensions: 28mm (H) x 25mm (Φ)

3. Signal Transmission Cable

   • Length: 1.5m with dual-end connectors

4. Premium Low-Power Headphones

   • Designed for extended surveillance operations with minimal power consumption

5. Audio Output Interfaces

   • Listening/HP Interface: Standard 3.5mm audio output for headphone connection

   • Recording/REC Interface: Standard 3.5mm audio output for connection to digital recording devices

   • Independent high-performance amplification circuits ensure uncompromised signal quality with no crosstalk interference

6. Power Supply System

   • Power input: Type-C interface (5V-9V voltage range)

   • Compatible with power banks for extended operation

   • Supports emergency power via AA alkaline battery packs

Key Features

• High-Gain, Low-Noise Flat Measurement Head: Ensures large contact area and optimal signal capture

• Advanced Signal Processing Circuitry: Utilizes three-way precision voltage regulation, high-fidelity positive-negative power amplification, and a high-current low-distortion output amplifier

• Built-in Analog Band-Pass Filter: Operates within a 30Hz-5kHz frequency range

• Superior Signal-to-Noise Ratio (SNR): Delivers clear and high-quality voice reproduction

• Portable & Lightweight: Designed for one-hand operation and ease of transport

Package Contents

Item	Quantity
Control Host	1 Unit
Signal Sensor	1 Unit
Sensor Cable	1 Piece
Premium Low-Power Headphones	1 Pair
Power Bank	1 Unit
Type-C Power Cable	1 Piece
Spare AA Battery Pack	1 Unit
Equipment Carrying Bag	1 Piece
Digital Recorder (Optional)	1 Unit
Recorder Charger (Optional)	1 Unit
Recorder Connection Cable (Optional)	1 Piece
ABS Plastic Equipment Case	1 Unit
EVA Internal Protective Lining	1 Set

Conclusion

The Viking High-Strength Listening Device is a state-of-the-art surveillance tool designed for professional security operations, intelligence gathering, and law enforcement investigations. With its cutting-edge signal processing technology, high sensitivity, and reliable power options, it offers an unparalleled solution for through-wall audio monitoring. Whether for tactical surveillance, forensic investigations, or counter-terrorism efforts, this device stands as a premier choice in the field of high-tech audio intelligence acquisition.