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RDA-1902 Microwave Voice Signal Analyzer A remote voice-signal acquisition and analysis system comprising passive acoustic beacons, active antennas, and an analysis host.
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 Mission stage Electronic Data
Capability Electronic Support
Scenario Remote Acquisition
Industry Criminal Investigation and Forensics
Product system Electronic Countermeasures
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 Technical specifications Values are preserved from the source product material. Missing fields are not inferred.
Analysis host 1 unit
Host dimensions 560 × 360 × 240 mm
Host weight 15 kg including ruggedized case
Active antennas 2 sets
Antenna I dimensions 550 × 480 × 80 mm
Antenna I weight 6 kg
Antenna II dimensions (custom) 1100 × 680 × 90 mm
Antenna II weight (custom) 15 kg
Passive beacon 130 × 130 × 1 mm; 10 hard beacons included
Passive beacon service life ≥3 years
Antenna I operating distance Open space ≥40 m; through 1-2 conventional walls or floors
Antenna II operating distance Open space ≥80 m; through 2 or more conventional walls or floors
Pickup area 30 m² around the indoor sound source
Voice frequency range 300 Hz-5 kHz
Pickup level ≥40 dB
Transmission delay Real-time transfer and analysis
Audio output Stereo headphone outputs on both antenna and host
Audio level control Level adjustment at both antenna and host
Audio storage Internal storage or external USB drive
Output port USB
Interface Color LCD user interface
Confirm the configuration with field conditions Share target distance, environment, carrying method, and the existing system so the relevant information and next step can be confirmed.
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