Furuno FM-8900S Manuel D’Utilisation

4.  DSC GENERAL MESSAGE CALLING, RECEIVING

1) Press 

the 

CANCEL key to silence the audio alarm and erase the pop-up mes-

sage. The reason for [UNABLE ACK] is displayed on the screen.

2) Rotate 

the 

CHANNEL/ENTER knob to select [QUIT] in the user options area 

then push the knob.
Note: If the coast station sends the message "QUEUE INDICATION", wait un-
til your turn comes.

If there is no response from the station, do one of the following procedures:

•  Resend call: Rotate the CHANNEL/ENTER knob to select [RESEND] in the user 

options area then push the knob.

•  Cancel call: Rotate the CHANNEL/EN-

TER knob to select [QUIT] in the user op-
tions area then push the knob. The 
message as shown in the right figure ap-
pears.
Rotate the CHANNEL/ENTER knob to 
select [Yes] then push the knob.

Unable acknowledge is sent automatically or manually depending on the acknowl-
edgement method setting (see section 5.16). Able acknowledge is sent only manually.

Note: All sessions must be quit or put on hold to enable automatic acknowledge.

If the channel specified by the sending station is one that you cannot use, an unable 
acknowledge [CAN’T USE CH] is sent automatically. The [ACK SETTINGS] menu is 
set to [AUTO (UNABLE)]. It takes a few seconds to transmit the call.

• NO REASON
• BUSY
• EQUIP ERROR
•  CAN’T USE CH
•  CAN’T USE MODE
• QUEUE INDICATION
• STATION BARRED
• OPERATOR ABSENT
• TEMP. UNAVAILABLE

: No reason given
: Busy
: Equipment disabled
: Unable to use proposed channel
: Unable to use proposed mode
: Queue indication
: Station barred
: No operator available
: Operator temporarily unavailable