User manual RAYMARINE RAY54 VHF RADIO

[. . . ] Ray54 Marine VHF Radio Owner's Handbook Document number: 81231-2 Date: July 2004 iii About this Handbook Introduction This handbook describes the Ray54 fixed VHF marine radio. The Ray54 provides two-way communications on all US, Canadian and International marine channels and weather watch on ten weather channels. The Ray54 includes equipment for Class "D" Digital Selective Calling (DSC). Conventions Used Throughout this handbook, the dedicated (labelled) keys are shown in bold capitals (for example: SCAN/SAVE). The LCD indicators and functions are shown in normal capitals (for example: TX). Operating procedures, which may consist of a single key-press or a sequence of numbered steps, are indicated by an arrow icon shown in the margin. Technical Accuracy To the best of our knowledge, the information in this handbook was correct as it went to press. [. . . ] Rotate the CH knob to select each character and then push in the CH knob to accept. The next position to be modified is indicated by a blinking underline. A full description of manual character entry can be found in Adding an Entry on page 59. 4. Push in the CH knob to select the desired individual name/MMSI ID. 5. Rotate the CH knob to select the working channel to be used for the Individual Call. Note: Individual Calls to a Coast Station remove this step from the operating procedures. The Coast Station controls and indicates the subsequent working channel within its acknowledgement. 36 Ray54 VHF Radio 6. Push in the CH knob to accept the selection. 7. Push CH knob again to send the Individual Call. The Individual Call is transmitted on channel 70, and then the radio tunes to the original channel and waits for acknowledgement. During this period you are still able to receive calls. Note: Pressing PTT at any time before an ACK is received cancels the Individual Call. When the acknowledgement is received, the Ray54 automatically switches to the selected working channel and sounds a DSC Call alert ring. It shuts off automatically after two minutes. Press PTT to communicate on the specified channel. If no acknowledgement is received within 3 minutes, the radio prompts you to resend the call. If you do nothing for 2 minutes, the Individual Call is cancelled and the radio reverts to the original channel. Chapter 5: Digital Selective Calling (DSC) 37 Receiving Individual Calls When an Individual Call is received, the radio sounds an alert tone and displays the type of call, the name or MMSI number (if the caller's MMSI number has not been programmed into your Phonebook) of the caller and the time the call was initiated. When an Individual Call from a station is received, the radio may also ask you to send an acknowledge (ACK) back to the caller. You are prompted to accept or decline the call. To silence the alert tone: Press any key. Automatic cancellation takes place after 2 minutes. To cancel the mode without sending ACK: Press the CLEAR/WX key. The alert tone is muted, the Individual Call is interrupted and the normal screen appears on the display. To accept the Individual Call: Push the CH knob. The tone is muted (if you have not already pressed another key) and an acknowledge (if requested) is sent to the originating station. The LCD indicates a change of working channels has been made. For Routine Calls, the channel changes to the one designated by the caller. For Safety and Urgency Calls, the radio automatically switches to channel 16. 38 Ray54 VHF Radio If the caller requests that you change to an unsupported working channel (channel 75, for example) the message INVALID CHANNEL appears on the LCD. [. . . ] Channel 16 is used for calling other stations or for distress alerting. The letter "B" following a channel number indicates simplex use of the coast station transmit side of an international duplex channel. Channel 70 is used exclusively for Digital Selective Calling (DSC) and is not available for regular voice communications. Channels 75 and 76 are reserved as guard bands for Channel 16 and are not available for regular voice communications. Appendix B: Channel List 93 International Marine VHF Channels & Frequencies CH No. [. . . ]