Description
APJ1 ASSB-256-w HF/SSB Encryption Module
(For LMR, Marine, Goverment and Military applications).
256 bit, single key
ASSB-256 Crypto Level III Digital Modules – 256 bit Key
The ASSB-256 is designed for simple wire-in installation into any HF mobile and portable radios with space to fit an option board. Function buttons I/O’s are momentary selection.
ASSB-256 Technical
The ASSB-256 wire-in Encryption module is a low rate voice HF modem for secure communications. The ASSB-256 can be fitted to most modern HF transceivers and VHF/UHF radios. Secure Voice communications are critical to protecting private information and confidential conversations from casual eavesdroppers, the public, business competitors, criminals, terrorists and enemies. Add-on Voice security units used to keep confidential information away from unwanted listeners to protect businesses, property and personnel.

A voice part of the ASSB-256 includes all elements of typical digital voice encryption system: a digital speech coder (vocoder) which transforms the speech into a digital bit stream, a digital encryption and decryption block to encode and decode the bit stream, and a modem to transmit and receive the encrypted digital information.
The user of the ASSB-256 can work with one of 3 (three! – 600, 1200 or 2400 bps) Digital Voice rates of built-in vocoder selected by user in depending on the current propagating conditions. The ASSB-256 will automatically detect and processes the incoming Digital Voice with different rates (Autobauding). The ASSB-256 will automatically detect and processes the incoming clear or encrypted Digital Voice (Automode). A data part of the Defender is a 3 rate HF modem – 600, 1200 and 2400 bps. The ASSB-256 has an ability to be upgraded with any future improvements via upgrade file. The programming and key loading is occurred via PC.
The ASSB-256 is supplied with ASSB-256 wiring loom and comes in two versions v1-vocoder 600/1200bps or v2-vocoder 1200/2400bps
Options
ADP-HF-USB Programming Cable
Compatible HF transceivers
Most HF transceivers. We have tested our boards for following HF transceivers:
Icom IC-78, IC-716, IC-7000, IC-F8101, Kenwood TK-90, Vertex VX-1210, VX-1400, VX1700, Harris.
Please contact us for further information.
Specifications of the ASSB-256
General | |
Operating Temperature | -30 deg.C to +60deg.C |
Power Input | Digital Voice, Analog Voice Transmission |
Supply current | 0.5A max @ 12V DC |
Dimension | 144mm X 37mm X 85mm |
Audio Input | 600 ohm, -35 to +10 dBm (programable). |
Audio Output | 600 ohm, -35 to +10 dBm (programmable). |
| |
Technical | |
Bandwidth | 400 to 2600 Hz |
Channel modulation | 8PSK |
Subcarrier | 1350 Hz |
Interleaver | 360 ms |
Compensation of frequency drift | ±30 Hz, 1 Hz/sec |
Compensation of symbol speed mistiming | ± 100*10-6 |
Compensation of multipath/fading | 0…5 ms, 3…8 Hz |
Receive – transmit delay DV | 1.5 sec |
Digital Voice rates | 600/1200 or 1200/2400 bps |
Data rates | 600/1200/2400 bps |
| |
Security | |
Encryption Algorithm | AES256 |
Length of key | 256 bit, 1 key |
Customer Encryption Option | Available |
| |
I/O Connectors | |
On-board connector | 20-pin JST connector with 20cm open ended wires |
See additional information here
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