Technical data

21
The "Berkut-K" – a hardware product for protection of voice signals transmitted
over UHF/VHF radio channels
"Berkut-K" portable encryptor provides encryption and decryption of telephone
conversations over VHF/UHF radio communication channels in the simplex mode, operating
in a pair with similar hardware products. And that guarantees protection of transmitted
information against unauthorized listening. The device is hooked up between the headset of
the user and the radio.
When supply of power to the encryptor is interrupted, the radio operates in the
standard mode.
"Berkut-K" has been designed for installation on planes, helicopters, vehicles, and for
stationary operation in the structure of the ground control.
"Berkut-K" 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 key number;
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.
Deliverables:
The encryptor;
An input device;
A control device – airborne/ground based;
A switching block;
A package of operating manuals
Technical characteristics:
Communication establishment time - 0.5 sec maximum;
Service band - 300-3400 Hz;
Speech intelligibility for the 300-3400 Hz band – at least Class 2 per GOST
16600-72 standards;
Communication establishment probability – 0.98;
Admissible signal-to-noise ratio - 3:1;
Tolerable acoustic noise level - 120 dB;