57 588.6 DSC CALL MENU AND SENDING AND RECEIVING DSC CALLSBriefly press DSC/MENU button to enter the DSC CAll Menu as below, the similaroperation as the fixed radio before. Please refer to the previous Chapter 5.LAST CALL Recall last call no matter what type of call received at last.NEW CALL Make a new call, by inputting the MMSI or pick up from the listmax 20GROUP Sends transmissions that are only received by radios that sharea common group MMSI number, up to 3 group MMSI numberscan be stored and call.ALL SHIPS Make an Urgency, Safety or Distress call to all ships. A re-confirmation screen follows the priority selection of Urgency,Safety or Distress. Such call will be sent out when assistanceneed but the situation not is so serious enough for a DistressCall. Urgency call is made when assistance required but notlife endanger while Safety call is for advisory alert.CALL LOG Allow a review of all stored Calls by number and time of call.An individual call type can be placed to the selectedMMSI/NAME in the LOG. The LOG maintains all received calltypes except DISTRESS calls. The call at the end of the list isautomatically erased. The earliest call stored at the end of thelist.There is 20 calls could be stored.DISTRESSLOGAllow a review of all stored Distress calls by number and time ofcall. An individual call type can be placed to the selected MMSI/ NAME in the LOG. The call at the end of the list isautomatically erased. The earliest call stored at the end of thelist. There is also 10 calls could be stored.POSREQUESTThe option enables you to request GPS position informationfrom any vessel for which an MMSI number is known, suchrequest can pick up from buddy list.EXIT quit the menu mode.Notes: There is no DISTRESS button with red cover on wireless handset. YouCAN’T send DISTRESS call via wireless handset.9 MAINTENANCEYour VHF Marine Radio RT-650 is a marine radio of water proof who can meet therequirement of JIS level 7, gives you a good reliability when using in marinecircumstance.The equipment is designed to be maintenance free. To keep your radio in goodworking condition:z Never unscrew the equipment, either the base station or handset, For in suchcase, the water proof performance will be greatly damaged.z If the radio becomes dirty and dusty, wipe it clean with a moisture cloth, but payattention to never using such solvents as benzene or alcohol, for they maydamage the radio surfaces.z Once your equipment does not work properly, never allow an unqualified personto tamper with internal adjustments. Please contact the local dealer for help.TROUBLE SHOOTINGItem Symptom Cause/Remedy1 Unit can not be poweredon.z Check the connection to the base station.z Check the volume control.2 No sound comes fromthe speakerz Set [VOL] to a suitable level.z Set squelch to the threshold point.3 Transmitting isimpossible, or highpower can not beselected.z Check to see if the PTT switch is defective.z Check to see if the microphone or MIC jack isdefective.z Some channels are for low power or receive only,change to another channel.z Push H/L to select high power.4 Low receiver sensitivity. z Check to see if the antenna being bad connected.z Check the connection between coaxial cable and basestation.5 Wireless Handset noresponsez Re-subscribe between Fixed radio and Handset6 Battery symbol isdisplayedz Check the battery voltage, which should be at least10.5+/- 0.5V DCz Check the alternator on the vessel7 No position informationis displayedz Check the GPS cable is physically connectedz Check the polarity of the GPS cablez Check the baud rate setting of the GPS is applicable.The baud rate setting should be 4800 and parityshould be set to NONE