![background image](http://html.mh-extra.com/html/icom/ic-m421/ic-m421_instruction-manual_612795031.webp)
25
6
DSC OPERATION
New2001
6
i
After receiving the acknowledgment, reply using the mi-
crophone.
➥
A distress alert contains (default);
• Nature of distress: Selected nature of the distress
• Position data
: GPS or manual input position data held for
23.5 hrs or until the power is turned OFF.
➥
The distress call is repeated every 3.5–4.5 min., until re-
ceiving an ‘acknowledgement.’
➥
Push
[CLR]
to cancel the ‘Call repeat’ mode.
➥
“
??
” may blink instead of position and time indications
when the GPS data is invalid, or has not been manually
updated after 4 hours.
■
Transmitting DSC calls
To ensure correct operation of the DSC function, please
make sure you set the squelch correctly. (p. 8)
D
D
Transmitting an individual call
The individual call function allows you to transmit a DSC sig-
nal to a specific ship only.
q
Push
[MENU]
to enter the DSC menu.
w
Push
[
▲
]
or
[
▼
]
to select “
Individual Call
,” and
push
[ENT]
.
e
Push
[
▲
]
or
[
▼
]
to select the desired pre-programmed in-
dividual address or “
Manual Input
,” push
[ENT]
.
• The ID code for the individual call can be set in advance. (p. 16)
• When “
Manual Input
” is selected, set the 9-digit ID code
for the individual you wish to call with
[
▲
]
or
[
▼
]
.
1st digit ‘0’ is fixed for a group ID.
--DSC Menu--
Select Address
˘Manual Input
Bob
˘John
≥
<CLR˘Exit / ENT˘OK>
--DSC Menu--
Select Item
˘Position Input
˘Individual Call
Group Call
All Ships Call
≥
INT
25W
TAG
RCV DTRS ACK
<Osaka Bay
<CLR˘
CALLING
Beep Off>
!IC-M421-3.qxd 06.5.26 1:44 PM Page 25 (1,1)
Summary of Contents for IC-M421
Page 1: ......
Page 42: ...re ush call or r Push ENT to transmit the polling request call to the se lected station ...
Page 61: ...55 12 TEMPLATE 11 12 Unit mm 164 78 149 61 6 ...
Page 62: ......
Page 63: ...57 28 3 14 2 111 2 60 6 Unit mm ...
Page 64: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan ...