Acoustic safe "ARB-DG Kolchan"
Designation
Acoustic safe "ARB-DG Kolchan" is designated for the protection of voice information that circulates at the location of the cell's owner.
The protection is ensured by automatic acoustic noise masking of voice information transmission channel when activating remotely the microphone of the cell.
Technical characteristics:
|
Controlled ranges |
GSM: 900, 1800 MHz |
|
Noise level at the location of the cell microphone |
not less than 100 dB |
|
Effective spectrum of noise signal |
250 – 4000 Hz |
|
Power supply "Kolchan" |
AAA-type battery |
|
Continuous operation time from one battery set |
not less than 30 days |
