Protect Private Conversations

The ANG-2200 Acoustic Noise Generator creates a perimeter of noise that defeats acoustic leakage eavesdropping devices including wired microphones inside walls, contact microphones, audio transmitters located in AC outlets, and laser/microwave reflections from windows.

Efficiency: offers two channels, each with high and low frequency control to compensate for material composition, with truly random noise sources

Usability: masking system injects noise into the environment perimeter and not directly into the environment—allowing normal conversation while defeating eavesdropping devices

Portability: optional accessories (transducer, omnidirectional speaker, window mounts) can be purchased to tailor the ANG-2200 to the environment of concern

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  • Two separate channels
  • Truly random noise sources
  • High and low frequency controls
  • Overload protection


  • Technical Surveillance Countermeasures (TSCM)
  • Counter Surveillance
  • Audio Masking
  • Noise Generation
  • Eavesdropping Prevention
  • Intelligence Protection
  • Executive Protection



Independent random noise source
Output voltage: 12 Vp-p @ 6 Ω (2 Ω min load)
Frequency range: 125 Hz - 4 kHz
Equalizer: LF 180 Hz ± 12 dB, HF 3 kHz ± 12 dB


15 VDC @ 1 A (AC adaptor supplied for 120 or 240 VAC)


Unit dimensions: 1.6 x 5.5 x 8 in  (4.1 x 14.0 x 20.3 cm)
Unit weight:  1.3 lb. (590 g)


There are currently no accessories associated with this product.