The DNG-2300 is designed to prevent listening though devices that cannot be detected by conventional countermeasures and installed around the perimeter of a room – wired wall microphones, contact microphones, AC outlet transmitters and window systems based on the reflection of laser/infrared/microwave beams. It is an excellent addition to high level countermeasures.
TRULY RANDOM NOISE
The DNG-2300 consists of 3 independent white noise digital generators. “White” means that the
noise is fully random and is equally distributed along the voice spectrum. This distribution
provides complete resistance against the filtering of a conversation. Another feature of white noise
is its unpredictability i.e. there is no method to wipe it out from a recorded conversation.
Men’s and women’s voices consist of lots of frequencies simultaneously produced during speech.These frequencies lie between 100 Hz and 6000 Hz. Listening devices usually have a narrower range mostly because of size limitations, the scheme of the device and battery time. The DNG-2300 has a range of 250-5000 Hz which is optimal to cover all types of voices and suppress all listening devices.
The DNG-2300 has an input LOOPBACK which allows easy and fast tuning to the necessary level
Note: you need transducers TD2300 and Omni Speaker SP2300 for proper function see below for kits