Technical data

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"Berkut-D" – a delta modulation-based hardware product for protection of voice
signals transmitted via UHF/VHF radio channels
"Berkut-D" encryptor has been designed to work with VHF/UHF radios that can
modulate the carrier frequency using pulse signals and have a standard frequency spacing of 25
kHz between channels. Application of delta-modulation in the "Berkut-D" encryptor for
conversion of voice signals can be explained by a relative simplicity of such device and a
significant reduction of weight and size. Besides, application of delta-modulation provides
various levels of encryption that are defined by a special block.
The "Berkut-D" encryptor uses the "Tiger" encryption algorithm with a key length of 104
bits. The encryptor is hooked up to the radio set via a connection plug and is used as a keyer with
built-in power supply.
The working keys are entered using a switch located on the case of the encryptor.
Deliverables:
The encryptor;
A set of power sources;
A package of operating manuals.
Technical characteristics:
number of keys - 128;
power supply – 5V;
feed amperage - 100 mA;
temperature range - minus 10 55 С;
dimensions of the encryptor –120x52x24 mm.
"Berkut-C" - a hardware product for portable radios for protection of voice signals
transmitted over VHF/UHF radio channels
The "Berkut" encryptor provides encryption and decryption of telephone conversations
between users in the simplex mode, operating in a pair with similar hardware products on
VHF/UHF communication channels. The encryptor is built on the basis of a micro-processor and
provides a high level of information security. It is hooked up to the radio set via a connection
plug and is used as a keyer with built-in power supply.
The working keys are entered using a switch located on the case of the encryptor.
Deliverables:
The encryptor;
A set of power sources;
A package of operating manuals.
Technical characteristics:
Service band - 300-3400 Hz;
Speech intelligibility for the 300-3400 Hz band – at least Class 3 per GOST 16600-72
standards (87% of syllabic intelligibility);
Number of keys - 128;
Power supply – 5V;
Feed amperage - 100 mA;
Temperature range: minus 10 - + 55 С;
Dimensions – 120x52x24 mm.