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18
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5.Key Operation
Power on/off & rotate to get up/down function
Short press to turn it on, long press to turn it off. Rotate knob to get up/down function when radio stay powered on.
Special Function of DISTRESS key & Real-time DSC
When sending distress message:
Pull the Distress key cover and press the Red key into “Distress Menu” selection. Select current distress situation
such as “Flooding”, then press and hold for 3 seconds, the selected DSC message will be sent. And this message will be
resent within 4 minutes--
Press the “PAUSE” key to pause or resume the resend.
Press “SEND” to resend immediately.
Press the soft key below “Exit” icon to exit the current menu and shortly cancelation option of selected DSC
alerting will be given for confirmation.
When receiving distress message:
The MDA-4 has two receivers, one receiver used for receiving/transmit voice and another receiver used to continually
monitor 70 channels. The DSC function of MDA-4 is operated in separate way which means any arriving DSC message will
not be ignored even if you are using MDA-4 for transmitting or receiving. If you want to check those messages, please press
“CALL/MENU” to enter “Receive Call Log” for checking all received DSC messages.
VOL/AIS Control
Short press “VOL/AIS” key and “VOL” icon will be shown on LCD, then press Up/Down key or rotate “POWER”
key to toggle as you wish.
Long press “VOL/AIS” key and enter AIS (Automatic Identification System) mode. The radio has built-in AIS
receiver to meet the demands for vessels to know the position, details and navigational intentions of other vessels within
VHF range for improved safety and collision avoidance.
MMIS :413903183
IMO NO:-----
Call Sign:
NAME:YUE HEYUAN
Lat:22°35.733’N
Lon:113°48.922’E
Bearing:232°
Dist:0.96nM
SOG:0.0KIS
COG:225.4°
Rot:-----
EXIT
