Garmin GPSMAP 496 Owner's Manual page 106

Marine Mode Pages and Features >
DSC Call List
The DSC Call List shows the 50 most recent calls, even if the unit
is left unattended. The Call List shows the most recent call from a
vessel. If a second call is received from the same vessel, it replaces
the first call in the Call List. Press MEnU to sort the list and delete
entries.
DSC Call List
9
DSC
DSC Log
When DSC calls are received, they are automatically stored in the
Log, with the latest call at the top. The unit can store up to 100 logs.
When 100 logs are received, the oldest log file is removed when a
new call is received. Press MEnU to sort the list and delete entries.
DSC Log
GPSMAP 496 Owner's Manual