AUTOMATIC LINK ESTABLISHMENT (ALE)

1. In high-frequency (HF) radio , the capability of a station to make contact, or initiate a circuit , between itself and another specified radio station, without human intervention and usually under processor control. Note: ALE techniques include automatic signaling , selective calling, and automatic handshaking . Other automatic techniques that are related to ALE are channel scanning and selection, link quality analysis (LQA), polling , sounding , message store-and-forward , address protection, and anti- spoofing . 2. In HF radio, a link control system that includes automatic scanning, selective calling, sounding, and transmit channel selection using link quality analysis data . Note: Optional ALE functions include polling and the exchange of orderwire commands and messages. ( 188 )