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the ultimate speech security - Digital Encryption
Digital Speech Security
The need for radio data and
voice communications security is now much more of a
necessity than only a few years ago. For many
organisations it is vital that private communications
remain private.
Governments, militaries, police, security and even
commercial businesses rely on two-way radios to
communicate and keep their communicated information,
confidential.
The ULTIMATE SECURITY!
For the ultimate in security we are pleased to introduce
the Worlds first commercial Digital encryption (also
known as scrambling) the Nabishi NDB-710/750 series
module that is
virtually impossible to de-crypt thereby ensuring total
communications security. These plug-in modules are
available for most common and well known private mobile
(PMR) radios.
Plug-in modules for most common makes of radios
NEW Lite
Version - NDB-710 Series.
A recently released a Lite version of the
module, the NDB-710 is now available as an
affordable, no fuss starter / basic unit.
The NDB series of Digital encryption
Modules are available for all common makes of radios
including Motorola commercial,
Motorola professional,
Icom,
Vertex, Tait, Kenwood
and others. For radios without a plug-in facility
socket, as wire-in module
NDB-710/750 w can be solder wired into the
transceiver (space allowing)
dedicated encryption modules fit all these radios and
many more
Digital Encryption Modules
(high-level security)
Digital encryption offers the ultimate in analogue radio
security without the cost of buying digital radios or
replacing an entire radio system. Our Digital Encryption modules ensure
that all communications remain private!
What does it sound like?
Eaves-droppers will only hear "white
noise" if they listen to a
digital encryption transmission. When listening to
analogue encryption they
will hear scrambled speech.
Highly featured options
Now with OTAR (over the air re-keying/programming)
Custom made modules available for Motorola Professional
series, Motorola Commercial series,
Vertex / Standard radios,
Icom professional radios
Wire-in modules (NDB-710/750w) for other radios
Digital (White Noise) High Level Encryption Module
Now with 256 Bit AES (Advanced Encryption Standard) or
DES
Programmable Via a PC or OTAR
Easy Installation
Voice compression algorithm
Total length of the key is 256 bit, or 20 bit for the
NDB-710 Lite version
Number of user keys = 4 Billion
Dramatically reduces interference (by up to 95%) even
from other users on the SAME channel!!
PTT- ID, Radio Kill, Radio Check, Emergency (on certain
makes of radios only)
Key technical characteristics Voice
signal coding
Number of user key codes is 4 Billion, 1 million for
the NDB-710 Lite version
Length of Algorithm is 256 Bits (AES, DES or Standard),
20 bit for the NDB-710 Lite version
Algorithm: Mixed-excitation Linear Prediction
Programming: Software (Password Access Enabled)
Voice transformation speed 2.4 kbps Voice signal
frequency band 300 - 3400 Hz Modem
Modulation type: QPSK
Carrier frequency 1800 Hz
Information transmission speed in the channel 4.8 kbps
Frequency band 300-3400 Hz
Channel coding convolution code (r=2/3) + interleave
Tactical characteristics
Mode of operation: simplex, semi-duplex or through a
repeater
End-to-end channel delay no more than 650 мs
Speech intelligibility at direct interception totally
undecipherable Electrical characteristics
Transmit/receiver consumption current no more than 40mА
Consumption current in waiting mode no more than 30mА
Operation temperature -30°C to +50°C
Unlike some more expensive alternative
encryptions, there is No Degradation of service when
transmitting through Repeaters and therefore there is no
need to make any costly changes or modification to a
repeater in order to use
the Nabishi NB-750 digital encryption.
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