4
DIGITAL SELECTIVE CALLING
14
■
All ships call transmission
Large ships use channel 70 as their “listening channel.” When
you want to announce a message to these ships, use the “all
ships call” function.
➀
Rotate [SQUELCH] clockwise until the audio noise disap-
pears.
➁
Push and hold [
C
•ALL] then rotate the channel selector to
select a category:
• URG (urgency) ... Used for urgent announcements (Use for gen-
eral ship-to-ship calls)
• SAF (safety) ....... Used for sending safety information.
• dTR (distress) ..... Used for specifying a Narrow Band Direct
Printer (NBDP) after DSC connection.
➂
Keep pushing [
C
•ALL] for 5
sec. until you hear 4 short
beeps change to one long
beep.
• The all ships call is automatically
transmitted.
• The display changes as at right.
INT
INT
T X
➃
Push and hold [PTT] to send an announcement via the mi-
crophone to all ships.
NOTE: Channel busy
When channel 70 is busy, the
all ships call (with urgency
category) is not transmitted.
The transceiver waits until the
channel is clear, then trans-
mits the call automatically.
Push [
16
•CLR] to cancel the
all ships call while waiting.
LOW
INT
BUSY
This display appears
while the call is in
standby.
LOW
INT