Standard Horizon HX-870 - Manual (Page 40)

Page 40 HX870
10.3 DSC DISTRESS CALL
The HX870 is capable of transmitting and receiving DSC distress messages to
all DSC radios. Distress calls from the HX870 include the latitude and longitude
of the vessel when the internal GPS unit is activated.
10.3.1 Transmitting a DSC Distress Call
NOTE
To be able to transmit a DSC distress call an MMSI number must be
programmed, refer to section “ 10.2.2 Programming the MMSI”.
Basic Operation
1. Lift the red spring loaded DISTRESS cover on the right
side of the transceiver, and press then press and hold
the DISTRESS key for 3 seconds. The radio display will
count down (3-2-1) and then transmit the distress call. The
backlight of the display and keypad flashes while the radios
display is counting down.
NATURE QUIT POS
!!DISTRESS!!
UNDESIGNATED
Time for 3sec.
POS: 24°25.975 S
118°59.456 W
UTC POS TM: 12:56
!!DISTRESS!!
UNDESIGNATED
Transmitting
POS: 24°25.975 S
118°59.456 W
UTC POS TM: 12:56
PAUSE CANCEL
!!DISTRESS!!
UNDESIGNATED
Waiting for ACK
POS: 24°25.975 S
118°59.456 W
UTC POS TM: 12:56
TX IN: 00:15
OK
!!DISTRESS!!
RX ACKNOWLEDGED
007654321
USCG CA
00:10
SINCE:
2. When the distress signal is sent, the transceiver watches
for a transmission on CH70 until an acknowledgment signal
is received.
3. If no acknowledgment is received, the distress call is
repeated in 4 minute intervals until a DSC acknowledgment
is received.
4. When a DSC distress acknowledgment is received, a
distress alarm sounds and Channel 16 is automatically
selected. The display shows the MMSI of the ship respond-
ing to your distress.
5. Press the PTT button and state your name, vessel name,
number of persons on board and the distress situation, then
say “over” and wait for a reply from the acknowledging ship.
6. To turn off the distress alarm before the radio retransmits the distress call,
press the 16/S key or the [QUIT] soft key.