Furuno FM-8700 Operator's Manual page 42

Normally set to ABLE.
Unable <
NOR BSY ---
Select reason why unable to comply.
(Normal setting: No reason)
Press the [ENT] key.
4-6
Watch VHF CH70
Press the [SELECT] key.
(To diaplay Setup menu.)
Set up menu <
1 2 3 ---
Select 2 followed by the [ENT] key.
Comply status <
UNABLE ABLE
Press the
[ENT] key.
>
Returns to standby display.
Receiving individual call with AUTO ACK ON
Automatic transmission of ACK BQ
(Alarm sounds.).
* Auto ack *
ID:
When "able to comply" is
selected.("ABLE" appears.)
Since the channel of the FM-8700
is automatically set to the channel
designated by a transmitting
station, voice communication can
be initiated by you or transmitting
station.
>
>
Press the [ENT] key.
ABLE or UNABLE appears.
When "unable to comply" is
selected. ("UNABLE" appears.)
The channel of the FM-8700 is
restored to the previous channel.
(The channel is diffrent from the
one designated by other station.)
Then, prepare a message with
diffrent proposal and transmit it by
pressing the [CALL] key.
Setup menu
(Main menu)
ABLE: To accept
proposal of
transmitting
station.
UNABLE: Proposal is not
accepted.
Other station ID