Technical data

17
"Berkut" provides encryption and decryption of telephone conversation over simplex
radio communication channels. And that guarantees protection of transmitted information
against unauthorized listening. The device is hooked up between the headset of the user and
the radio.
"Berkut" has been designed for installation on planes, helicopters, vehicles, and for
stationary operation in the structure of the ground control. It provides:
Listening watch for messages on an open communication channel;
Automatic switching between the open and secure modes;
Decryption when a synchronizing parcel is received from the communication channel;
Automatic detection of the number of a key;
Automatic switching from the decryption mode into the standby mode after the
conversation is over;
Adjustable volume of telephone signals.
The working keys are entered from a keyboard with the employ of a personal
computer.
The design supports various ways to plug the encryptor into different sources
of DC power supply. It allows to install the unit on vehicles as well as on aircraft.
When supply of power to "Berkut" is interrupted, or when the unit is damaged, it
turns off and the radio continues to work, without the operator, in the conventional mode
without signal encryption.
Mode of operation of "Berkut" can be selected with the employ of a remote control.
Depending on the type of deliverable package, this equipment can be operated by two
operators.
This unit uses the "Tiger" algorithm of encryption with a key of length of 104 bits.