ACARS e. Aircraft Communications Addressing and Reporting System
Aircraft Communications Addressing and Reporting System (ACARS) is a digital datalink system for transmission of short, relatively simple messages between aircraft and ground stations via radio or satellite. The protocol, which was designed by ARINC to replace their VHF voice service and deployed in 1978, uses telex formats. SITA later augmented their worldwide ground data network by adding radio stations to provide ACARS service. Over the next 20 years, ACARS will be superseded by the Aeronautical Telecommunications Network (ATN) protocol for Air Traffic Control communications and by the Internet Protocol for airline communications.
Euroopa primaarne sagedus - 131,725 MHz AM. Euroopa sekundaarsed sagedused - 131.525 & 136.925 MHz AM. London - 136.900 MHz AM USA & Kanada primaarne - 131.550 MHz AM USA & Kanada sekundaarsed - 132.025 & 129.125 MHz AM. Jaapan - 131.450 MHz AM