VHF-90M Technical Product Specifications
General
Frequency range: |
30-88MHz |
Channel resolution: |
25kHz (2320 Channels) |
Pre-Programmed Channels: |
10 |
Selective Calling: |
Numeric individual & group call |
Power Supply: |
12V DC |
Batteries: |
10 x 1.2V DC NiMH battery |
Battery Endurance: |
12 Hours 9:1 Rx:Tx (typical) |
Power consumption: |
5W 1.5A |
Whisper : |
-20dB under nominal level |
Squelch: |
- 150Hz tone squelch in legacy mode (AFF) |
Secure Modes: |
- Transec - Digital Encrypted Fixed Frequency (DEFF) |
Antenna: |
- Short rubber whip (400mm) |
Controls: |
Shaft encoder; channel up/down; secure on/off; hop on/off |
Display: |
High reliability 5 digit 7 segment LED |
Programming: |
- Field programming via DTMF keyboard |
BITE: |
Advanced module diagnostics & error conditions |
MTTR: |
10 minutes |
MTBF: |
8000 hours |
VHF Secure Modes
The VHF-90M Low Band VHF transceiver when combined with Q-MAC’s Secure Modes option provides tactical users with secure, jam-resistant VHF communications to a military standard. The synchronization scheme for Frequency Hopping is completely independent from any infrastructure, such as GPS satellites, which may be controlled by foreign governments or disabled by selective availability.
With the addition of the Secure Modes option, Q-MAC’s VHF-90M transceiver offers four modes of voice communication and three modes of data communication. This range allows operators to adapt to the required conditions and sensitivity of information being transferred:
- Analogue Voice - Fixed Frequency
- Digital Encrypted Voice - Fixed Frequency
- Digital Encrypted Voice - Frequency Hopping
- Digital Encrypted Voice - Free Channel Search
- Digital Data - Fixed Frequency
- Digital Encrypted Data - Fixed Frequency
- Digital Encrypted Data - Frequency Hopping
ECCM Parameters
Secure Modes: |
- Comsec – Digital Encrypted Fixed Frequency |
Hop Rate: |
100 hops per second |
Hop Sequence: |
Pseudo-random |
Hop Algorithm: |
DES |
Hop Bandwidth: |
6.4MHz |
Hop Synchronisation: |
Inaudible synch burst from master station |
Late Entry: |
Possible |
Transmitter
Output Power: |
3levels: 5W; 0.5W; 50mW |
Frequency Stability: |
± 2.5ppm |
Pre-Programmed Channels: |
10 |
Deviation: |
± 3kHz to ± 7kHz (factory settable) |
Modulation: |
FM (F3E) in legacy mode |
Harmonic Radiation: |
-50dB |
Spurious Emission: |
-55dB |
Intermediate Frequencies: |
130.050 MHz & 455kHz |
Receiver
Receiver Sensitivity: |
-116dBm for 12dB SINAD |
Blocking: |
>85dB: |
Adjacent Channel Suppression: |
+70dB |
Image Suppression: |
+80dB |
Spurious Suppression: |
>50dB |
AF Output: |
150mW @ 2% distortion |
Squelch: |
150Hz tone (PRC-77 compatible) & signal threshold in digital modes |
Mechanical & Environmental
Weight: |
1kg with battery pack |
Dimensions: |
82 x 223 x 54mm |
Temperature: |
- Operating -200C to +600C |
Immersion: |
Per Mil-Std 810F |
Drop: |
Per Mil-Std 810F |
Vibration: |
Per Mil-Std 810F |
Construction: |
Construction Aluminium extrusion body; injection moulded aluminium front & rear end caps; high impact Lexan® moulded battery |
VHF-50M Amplifier
Output Power: |
50W ± 0.5dB |
Harmonic Radiation : |
-60dB |
Spurious Emission: |
-65dB |
Frequency Range: |
30-88MHz |
Power Supply: |
11-30V DC |
Front Panel Connection: |
RF in; antenna out; VDS control in; aux (audio & PTT in/audio out); DC input |
Indicators: |
RF present; DC supply; fault condition |
BITE: |
Advanced module diagnostics & error conditions |
VHF-90M Docking Station
Power Supply: |
11-30V DC |
Front Panel Connection: |
Aux handset/headset; RF out; control (audio & PTT in/audio out/DC in); field telephone; rebro control; remote control |
BITE: |
Advanced module diagnostics & error conditions |
VDB-25M Amplifier and Dock
Output Power: |
25W ± 1.5dB |
Harmonic Radiation : |
-50dB |
Spurious Emission: |
-55dB |
Frequency Range: |
30-88MHz |
Power Supply: |
14.4V DC Lithium Ion Battery Pack |
Front Panel Connection: |
Handset in x 2, Whip Antenna out, Antenna BNC 50 Ohm out RF in; |
BITE: |
Advanced module diagnostics & error conditions |
Q-MAC Electronics Pty Ltd reserves the right to alter any of the specifications contained in this document without notice.