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Portable Masking Kit (PMK-8)

Protect Private Conversations

Efficiency

This kit provides a temporary audio security solution when you need to get in, set up voice masking security, and get out.

Usability

Create a Voice Masking perimeter to protect against structure bound audio threats.

Portability

The Portable Masking Kit, PMK-8 packs 8 Voice Masking Generator sets (unit, transducers, cables) in a hard shell case for easy transport with wireless charging in the case.

Features

  • Quick deployment – easy to configure/setup

  • Portable – packs in a case for easy transport

  • Protects against structure bound audio leakage

  • Compact – each small Voice Masking Generator powers 2 transducers

  • 16 transducers, 8 internal VMG speakers

  • Load custom voice recordings to match those speaking in the room

  • 24 hour battery life

  • 4W external speaker output

  • EXT out

  • Rechargeable lithium-ion battery

  • Multiple mounting options

  • 32 GB memory for storing custom audio files

  • Selectable HVAC or scrambled speech/custom audio output

  • Adjustable output volume

  • Inductive wireless charging built into case

The Portable Masking Kit (PMK-8) protects private conversations by injecting voice masking noise into structural surfaces, gaps, and free space, making conversations unintelligible to anyone outside the room.  Portable Masking Kit creates a perimeter of masking noise that defeats acoustic leakage and eavesdropping devices like:

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  • Wired wall devices

  • Contact microphones

  • Hidden audio transmitters

  • Laser/reflections from windows

Applications

  • Hotel Rooms, offices, conference rooms

  • Technical Surveillance Countermeasures (TSCM)

  • Speech and conversation privacy

  • Eavesdropping prevention

  • Intelligence protection

  • Executive protection

Specifications

  • POWER

    • Unit wired power/charging/programming port: USB-C @ 5 V, 3.1 A
      Wireless Qi charging rate: 5 W
      Battery: 3.7V 5000 mAh  Li-Ion
      Battery life: up to 36h with no transducers at full volume; up to 24h with 2 transducers and internal speaker at full volume (typical)
      Typical charge time: 9 h
      Case chargers: USB-C PD with included wall adaptor @ 20 V, 3 A (adaptor supports both 120 and 240 VAC)

  • AUDIO OUTPUT

    • Internal speaker and push terminal line out
      Peak output power: 4 W
      EXT out amplitude: 6.7 V pk-pk
      Audio frequency range: 100 Hz – 15 kHz
      Max SPL: 98 dB at 4 ft

  • MECHANICAL

    • Unit dimensions: 4.6 × 2.6 × 0.9 in / 12 × 6.5 × 2.3 cm
      Unit weight: 5.7 oz / 160 g
      Case dimensions: 6 × 15 × 18.5 in / 16 × 38 × 47 cm
      Case/contents weight: 16 lbs / 7.3 kg

  • ENVIRONMENTAL

    • Battery charging temperature: 0 to 23 °C (wireless), 0 to 45°C (wired)
      Storage temperature: -20 to 60 °C
      Operating temperature: -10 to 40 °C

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