Sailor HC4500B Operator's Manual
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Contents
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11Receiving an All Ships CallDSC on distress calling frequencies are used by coast stations to advise shipping and byships to advise coast stations and other ships of a following urgency or safety message.Reception of a safety call addressed to all ships is indicated by a sound signal of 3 secondsduration and a Call lamp that flashes until the call is acted upon. The call alarm sound levelsetting can be changed, see the Function Menu.Displays the contents of the callPress CONNECT to set receiver to thefrequency indicated in the callReturns to previous telephony displayIf VIEW is pressed: Press CONNECT to set receiver to thefrequency indicated in the callSelects older callReturns to previous telephony displayCONNECT is shown if SSB telephony and a legal frequency are indicated in the call anddisappears 5 minutes after receipt of the call.Ships receiving a DSC call to all ships shall not acknowledge the receipt of the call butshould set the receiver to the radiotelephony frequency indicated in the call and listen to theurgency or safety message.Returns to previous telephony displayReceiving an Individual CallWhen the transceiver is not used for traffic, scanning should be activated to keep watch onone or more DSC frequencies used for public correspondence and general ship-to-shipcommunication.Reception of an individual routine call addressed to the ship is indicated by a flashing Calllamp and a sound signal which continues until the call is acted upon. The call alarm soundlevel setting can be changed, see the Function Menu.Displays the contents of the callPress ACK or lift handsetStops alarm soundThe call should be answered by sending a DSC Acknowledgement within 4½ minutes.LIFT HANDSET TO ACKNOWLEDGE and ACK is shown ifSSB telephony and legalfrequencies are indicated in the call. Lifting the handset or pressing the softkey in this case0131 |
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