ALE Flashcards
Define ALE
ALE is a world wide standard for digitally initiating and sustaining HF radio communications
Expand ALE
Automatic Link Establishment
How does and ALE system work?
By using HF SSB transmitter, internal microprocessor and MFSK Modem
What is meant by the term BER
Bit Error Ratio
Errors : Sent bits
How would an ALE system allow you to reach a specific station? what is the process?
ALE controller selects best available IDLE channel, it then sends a brief SELECTIVE CALLING signal identifying the intended recipient
Explain Selective Calling?
It will only let in signals with the correct digital code
What happens on an ALE system after a successful link?
Receive station emits an audible alarm and shows a visual alert to the operator
Name 3 common applications provided by an ALE system?
Voice, Date and Email
Texting/File transfers/Images
What method do ALE systems serve?
ALE systems serve as a convenient method of beyond the line of sight communication
HF ALE systems are widely used by who?
US Armes forces, Emergency and disaster relief agencies as well the military and guard forces
Organisations known to use ALE for emergency management and disaster relief include?
Red Cross, NATO, Disaster medical assistance teams.
Name the 3 types of mode an ALE system use?
SMS, Speech, Negotiates a data link
