High Frequency Voice Datalink
Overview
High Frequency (HF) voice communications have long been a standard form of air ground communication for commercial aviation and are the only practical means of long-range and over-water aeronautical communication for most of today's air transport fleet. Datalink provides automatic frequency management and dramatically improved performance with forward error correction capabilities.
High Frequency Datalink benefits include:
High Frequency Datalink benefits include:
- Data relieves congestion on voice frequencies
- Automatic selection of frequency and data rates
- Voice is prone to human errors and interpretation
- Data detects errors and automatically retransmits
- Data extracts signals in noisier environments (3dB/10dB)
- Increased HF traffic capability, assured communication link
- Automatic air/ground HF linkage with improved voice/data quality
- Datalink messages are not written or verbal language sensitive and have true world-wide communication capability
Compatible Platform
Airbus A300
Specifications
Key Benefits
- Acquisition and message cost compared to satellite communications
- Channel access time decreased from less than a minute from up to ten minutes
- Message transmission time decreased from less than three seconds from more than one minute
- Pilot workload - saves time and improves efficiency
- Procedural change and operational training for flight crew
- Single worldwide service provider means easier billing
