Installation manual

Page 23
Channel scanning
Channels may be sequentially monitored for activity using the Channel Scanning
facility of the F1 radio.
While scanning the radio automatically maintains a watch on a channel for the
duration of the set dwell time. The dwell time can be set in the Profiles menu. If no
signal is detected the radio moves to the next channel in the sequence of channels,
which may be the next consecutive channel.
Scan program
Scanning is controlled by Scan Programs (lists of channels to scan) which are
stored in the F1 radio. You can store up to 9 different scan programs
To summarise the features of the Scan Program facility:
• The transceiver has 10 scan programs (including ‘Scan All’).
• When ‘Scan All’ is selected all channels available to the operator will be
scanned.
• Each Scan Program can be configured individually
• The numbers of channels in an individual scan program is limited to 30 (except
for the Scan All program.
• All channels available to the operator can be programmed into a scan
sequence
• The operator can set the Channel Dwell Time within the range
200 milliseconds (ms) to 1.8 seconds, in steps of 50 ms.
• The Channel Dwell Time can only be varied for the channels in the Scan
Program. (The dwell time for the Priority Channel remains 150 ms.)
To setup the radio for scanning refer to the ‘Scanning All Channels: Creating and
Editing a Scan Program’ section.
Incoming DSC Call During Scanning and Dual Watch
During Scan or Dual Watch incoming DSC calls will be displayed as incoming calls
for 1 minute. When the 1 minute period has elapsed the radio will return to the Dual
Watch or Scan operation, and the LCD screen shows the Scan or Dual Watch
display, as appropriate. A closed envelope () is displayed if an unread DSC
message has been received.
However if the incoming call is an All Ships Call of the Category ‘Distress, Urgency
or Safety’ the display will continue to show the incoming call and the Scan and Dual
Watch activity will be stopped. In this situation the Scan and Dual Watch activity has
to be reactivated by the operator.
IMPORTANT: The Scan Program only defines the channels to be used from the
legal channels available when the radio is configured by your supplier. It is the
responsibility of the user to ensure that the radio is operating in the correct
channel mode (i.e. International or US) before initiating a scan.