GX1256S Page 29
7 DIGITAL SELECTIVE CALLING

7.1 GENERAL

WARNING
This radio is designed to generate a digital maritime distress and safety
call to facilitate search and rescue. To be effective as a safety device,
this equipment must be used only within communication range of a shore-
based VHF marine channel 70 distress and safety watch system. The
range of signal may vary but under normal conditions should be ap-
proximately 20 nautical miles.
Digital Selective Calling is a semi-automated method of establishing a radio
call, it has been designated by the International Maritime Organization (IMO)
as an international standard for establishing VHF, MF and HF radio calls. It
had also been designated as part of the Global Maritime Distress and Safety
System (GMDSS). It is planned that DSC will eventually replace aural watches
on distress frequencies and will be used to announce routine and urgent
maritime safety information broadcasts.
This new system will allow mariners to instantly send a distress call with
GPS position (when connected to the transceiver) to the US Coast Guard
and other vessels within range of the transmission. DSC will also allow mari-
ners to initiate or receive distress, urgency, safety routine, POS Request,
POS Send and Group calls to or from another vessel equipped with a DSC
transceiver.
WARNING STICKER
A DSC Warning sticker is in-
cluded with the QUEST+. To
comply with FCC regula-
tions this sticker must be
mounted in a location that
can be easily viewed from
the location of the QUEST+.
Make sure the chosen loca-
tion is clean and dry before
applying the sticker.
WARNING
STICKER
CALL
SET
SCANH/L
DW
WX