Automatic Link Establishment, commonly known as ALE, is the worldwide de facto standard for digitally initiating and sustaining HF radio communications. ALE is a feature in an HF communications radio transceiver system, that enables the radio station to make contact, or initiate a circuit, between itself and another HF radio station or network of stations. The purpose is to provide a reliable rapid method of calling and connecting during constantly changing HF ionospheric propagation, reception interference, and shared spectrum use of busy or congested HF channels.
Read more about Automatic Link Establishment: Mechanism, Operator Skill, Common Applications, Techniques, History and Precedents, Standards and Protocols, Basis For HF Interoperable Communications, Use in Amateur Radio
Famous quotes containing the words automatic and/or link:
“What we learn for the sake of knowing, we hold; what we learn for the sake of accomplishing some ulterior end, we forget as soon as that end has been gained. This, too, is automatic action in the constitution of the mind itself, and it is fortunate and merciful that it is so, for otherwise our minds would be soon only rubbish-rooms.”
—Anna C. Brackett (1836–1911)
“Elephants walking
Along the trails
Are holding hands
By holding tails.”
—Lenore M. Link (fl. 1937)