Retevis RM20 Mode D'emploi page 12

3.Push [▲] or [▼] to select the desired pre-programmed group address, and push [DSC].
• The ID code for the Group call must be set in advance.(Image1)
4.Push [▲] or [▼] to select the desired intership channel, and push [DSC].
• Channel 70 is selected and "READY" appears.(Image2)
5.Push [DSC] to transmit the Group call.
• If Channel 70 Is busy, the transceiver stands by until the channel become clear.(Image3)
6. After the Group call has been transmitted, the display changes to the previously specified channel.(Image4)
7. Push and hold [PTT] to communicate your message to the responding ship.
(Image1) (Image2) (Image3) (Image4)
♦ Receiving a Group call
While monitoring Channel 70 and a Group call is received:
1.The emergency alarm or beeps sound depending on the received category.
2."DSC" appears and "RCV GROUP" scrolls at the channel comment indicator.
3.Push any key to stop beep.
4.Push [DSC] to select the channel specified by the calling station for voice communication;
Push any other key to ignore the Group call.(Image5)
(Image5)
■ ALL Ships call
The All Ships call function allows you to transmit a DSC signal to all ships
♦ Transmitting All Ships call
Large ships use Channel 70 as their 'listening channel'. When you want to announce a
message to these ships, use the 'All Ships call' function.
1.Push [DSC] to enter the DSC menu.
2.Push [▲] or [▼] to select "ALL SHIPS"(Image6)
3.Push [DSC] to enter the standby condition for All Ships call.
• Channel 70 is selected and "READY" appears.(Image7)
4. Push [DSC] to transmit the All Ships call.
(Image6)
• Low power is selected(Image8)
5. After the All Ships call has been transmitted, the display changes to Channel 16 automatically.(Image9)
(Image7) (Image8) (Image9)
♦ Receiving an All Ships call
While monitoring Channel 70 and an All Ships call is received:
1.The emergency alarm sounds when the category is 'Distress' or 'Urgency'; 2 beeps
sound for other categories.
2."DSC" appears and "RCV ALL SHIPS" scrolls at the channel comment indicator.
3.Push any key to stop beep.
4.Push [DSC] to monitor channel 16 for an announcement from the calling vessel,
push any other key to ignore the call.
■ Geographical Area call
The Geographical Area call function allows you to transmit a DSC signal to all ships in
a geographical area.
♦ Receiving a Geographical Area call
While monitoring Channel 70 and a Geographical Area call (for the area you are in) is received:
1.The emergency alarm or beeps sound depending on the received category.
2."DSC" appears and "RCV GEOGRAPHICAL" scrolls at the channel comment Indicator.
3. Push any key to stop the beep.
4.Push [DSC] to change to the channel specified by the calling station for voice communication;
Push any other key to ignore the Geographical Area call.
■ GPS Position indication
♦ GPS Positioning Instructions
The radio with built-in GPS receiver, when the number of satellites which GPS received and the
signal strength is sufficient, then it will be able to indicate the positioning information of the ship.
When on standby mode, press and hold [DSC] for 1 second, the screen displays the positioning
information of the current ship : Latitude,longitude, UTCtime,number of satellites.
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