Icom IC-M421 Instruction Manual page 44

6
DSC OPERATION
D D Receiving an individual call
While monitoring Channel 70 and an individual call is re-
ceived:
➥ The emergency alarm or beeps sound depending on the
received category.
➥ "
" appears in the display.
➥ Push [CLR] to stop the beep, then push [ENT] to reply the
call and select the channel specified by the calling station
for voice communication (depending on your replying con-
dition see p. 27 for individual acknowledgement call proce-
dure for details.); push [CLR] to ignore the individual call.
38
D D Receiving a group call
While monitoring Channel 70 and a group call is received:
➥ The emergency alarm or beeps sound depending on the
received category.
➥ "
" appears in the display.
➥ Push [CLR] to stop the beep, then push [ENT] to select
the channel specified by the calling station for voice com-
munication; push [CLR] to ignore the group call.
D D Receiving an all ships call
While monitoring Channel 70 and an all ships call is received:
➥ The emergency alarm sounds when the category is 'Dis-
tress' or 'Urgency'; beeps sound for 2 minutes.
➥ "
" appears in the display.
➥ Push [CLR] to stop the beep, then push [ENT] to monitor
channel 16 for an announcement from the calling vessel,
push [CLR] to ignore the call.