Download presentation QM4091M Digital Voice Encryption Unit (3.3 MB)
The Q-MAC QM4091M Digital Speech Encryptor is optimised for excellent speech clarity and high security over HF radio links. On air tests show the QM4091M performs very well in comparison to other handset and integrated products. It is able to get through on CCIR Ionospheric simulator (Bad, Moderate and Good conditions) and will synchronise on as little as 10dB S/N ratio. The QM4091M automatically detects secure speech, making it operator friendly. It can be used with Q-MAC DTMF handset QM4014 allowing selective calling or standard handset QM4016.
System Features
- Automatic Detection of Encrypted Speech
- Auto switching between Analog and Digital
- High grade Vocoder
- Built in forward error correction
- Advanced digital signal processing
- Automatic Clarifier
- Small size
- Low Current Consumption
Technical Specifications
General
| Description |
Value |
|
Bandwith Used
|
300-2500Hz
|
|
Frequency correction range
|
+/- 125Hz
|
|
Speech Modem
|
OFDM 36 carrier DPQSK
|
|
Symbol rate
|
3.6kHz
|
|
Guard Interval
|
20mS 50baud
|
|
Tone spacing
|
4mS
|
|
Vocoder
|
62.5Hz
|
|
FEC
|
AMBE
|
|
Master Key length
|
Golay and Hamming
|
|
Encryption
|
12 decimal digits, 2^71 codes DES Data Encryption Standard
|
|
Modes
|
Speech Clear/Speech Secure
|
|
Handset
|
Q-MAC military DTMF handset
|
|
Data rate
|
2,400bps speech with 1,200bps FEC
|
Mechanical and Environmental
| Description |
Value |
|
Weight
|
900g stand alone
|
|
Dimensions
|
210 x110 x 57mm (stand alone)
|
|
Temperature
|
Operating -20C to +60C
Storage -30C to +80C
|
|
Immersion
|
Per Mil-Std 810F
|
|
Drop
|
Per Mil-Std 810F
|
|
Vibration
|
Per Mil-Std 810F
|
|
Construction
|
Aluminium body
|
Voice Encryption|Data Modem|Video Transfer|HF Transceiver
