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BARRETT PRC-4090 TACTICAL HF SDR TRANSCEIVER - ADVANCED OPERATION
ARINC Call
An ARINC call functions in much the same way
as a Selcall. It is a hailing or alert system used
exclusively to alert aircraft.
An ARINC ID is a sequence of two sets of 2 let-
ters. Each pair must be entered alphabetically
eg. AB-CD or CD-AB.
The interface does not allow invalid ARINC IDs
to be entered and blanks out invalid characters.