UT-79 datasheet(21/36 Pages) ETC

21 / 36 page

D Receiving a geographical area call

While monitoring channel 70 and a geographical area call (for

the area you are in) is received:

➥ Emergency alarm or beeps

sound depending on the re-

ceived category.

➥ “RCV” and “GEO” appear in

the display; then, the channel

speciﬁed by the calling station

is automatically selected for

voice communications.

➥ Monitor the selected channel for an announcement from

the calling ship.

NOTE: When no GPS receiver is connected or if there is a

problem with the connected receiver, all geographical area

calls are received, regardless of your position.

D Receiving an individual call

When receiving an individual call, an acknowledgement must be

sent back to the calling station within 4.5 min. Operation and

transceiver function differs depending on the SET mode settings.

Two messages can be selected for acknowledgement:

•“Able to comply” ..............You can communicate with the

calling vessel via the mic after a DSC connection.

•“Unable to comply”...........You cannot communicate with

the calling vessel after a DSC connection (e.g. opera-

tor leaves transceiver).

While monitoring channel 70 and an individual call is

received:

➥ Emergency alarm or beeps sound depending on the re-

ceived category.

➥ “RCV” and “Ind” appear in the

display.

➥ The channel specified by the

calling station is automatically

selected for checking the

channel

condition

(except

when full automatic acknowl-

edgement is selected).

➥ Proceed as follows on the next page according to your pre-

set conditions.

DIGITAL SELECTIVE CALLING

USA

RCV

BUSY

USA

LOW

RCV

USA

RCV

BUSY

LOW

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