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Introduction
Nothing Comes Close to a Cobra
®
Product Features
65
Digital Select Calling (DSC)
Operation
The Distress alarm sounds to confirm that the message is
transmitted. At the end of the transmission, the radio
maintains a watch on Channel 16 and Channel 70 for an
acknowledgement. Press any button to turn Off the alarm
and return to Standby mode.
■
If an acknowledgement is received, the Distress alarm
sounds again and the responding party’s MMSI number
displays on the LCD.
■
If no acknowledgement is received, the radio resends
the message at approximately four (4) minute intervals
until an acknowledgement is received or the Distress
call is aborted.
Receiving Distress Calls
When a vessel is within range of a DSC Distress call, the
radio receives the call, sounds the Distress alarm, and
switches to Channel 16. All DSC calls that are received will
sound one (1) alert alarm. See pages 36-37 for descriptions
of the different alarms. Press any button to turn Off the alarm.
The received call information continues to display on the LCD.
When a Distress Call is Received:
1. Press any button to turn Off the alarm and return to
Standby mode on Channel 16.
2. Read and write down the distress information that
displays on the LCD (position data may or may not be
shown); then determine whether to answer the call.
3. Respond, if appropriate, by pressing and holding the Talk
button to transmit on Channel 16.
4. The received information is placed into the Call Log. See
page 75 for more information on viewing the Call Log.
5. If MMSI (Maritime Mobile Service Identify) matches a
contact from the Individual Directory entry stored in your
radio, the name identification displays and the alarm
sounds to identify the Name of the matching MMSI
member.
6. Press ESC after viewing the display to return to normal
Standby mode.
NOTE
The radio automatically switches to Channel 16 upon
Operating Your Radio
Distress Call MMSI
8187-F80-Operation-8_MMB:F75-Operation-8 12/29/06 9:04 AM Page 65