Microwave Voice Signal AnalyzerImage 1 of 7: Microwave Voice Signal Analyzer

RDA-1902

Microwave Voice Signal Analyzer

A remote voice-signal acquisition and analysis system comprising passive acoustic beacons, active antennas, and an analysis host.

Product overview

A roughly 1 mm passive beacon is placed in the target space; the host retrieves and analyzes sound over a microwave link in real time. The battery-free beacon can be concealed in non-metallic materials for long-term use.

Battery-free front-end supports long-term concealed deployment
The approximately 1 mm beacon can be integrated into common non-metallic objects
Long-range real-time acquisition, monitoring, and storage in one system
Active-antenna configurations can be selected for the required range and penetration conditions
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Industry applications

Tactical Optics

Use Cases

Deployment Scenarios

Mission Phases

Solutions

Product features

  • Battery-free beacon with ≥3-year service life
  • Approx. 1 mm thin for concealment in non-metallic materials
  • Short learning curve and over 90% speech intelligibility
  • Remote operation through walls, floors, or windows
  • Real-time transfer, dual headphone outputs, and internal/USB storage

Applications

  • Long-range voice acquisition through walls
  • Covert acoustic sensing for investigations and evidence collection
  • Remote audio-acquisition tasks requiring a long-life passive front end

Feature guide

System composition

The standard system includes one analysis host, two active antennas, and 130 × 130 × 1 mm passive beacons (ten hard beacons supplied).

Operating method

Place the passive beacon in the target space and conceal it in a non-metallic material. Aim the active antenna toward the area; the host receives, analyzes, monitors, and stores the voice signal in real time.

Deployment conditions

Antenna I reaches ≥40 m in open space and can penetrate one to two conventional masonry walls or floors. Custom Antenna II reaches ≥80 m and can penetrate two or more. Metal barriers, metal framing/coatings, rain, and snow reduce performance.

Specifications

Analysis host1 unit
Host dimensions560 × 360 × 240 mm
Host weight15 kg including ruggedized case
Active antennas2 sets
Antenna I dimensions550 × 480 × 80 mm
Antenna I weight6 kg
Antenna II dimensions (custom)1100 × 680 × 90 mm
Antenna II weight (custom)15 kg
Passive beacon130 × 130 × 1 mm; 10 hard beacons included
Passive beacon service life≥3 years
Antenna I operating distanceOpen space ≥40 m; through 1–2 conventional walls or floors
Antenna II operating distanceOpen space ≥80 m; through 2 or more conventional walls or floors
Pickup area30 m² around the indoor sound source
Voice frequency range300 Hz–5 kHz
Pickup level≥40 dB
Transmission delayReal-time transfer and analysis
Audio outputStereo headphone outputs on both antenna and host
Audio level controlLevel adjustment at both antenna and host
Audio storageInternal storage or external USB drive
Output portUSB
InterfaceColor LCD user interface

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