Status of FM-8500 during DSC Call

When the distress alert is transmitted (by pressing the [DISTRESS] key), the output power of the FM-8500 is automatically set to maxi- mum (25 W).

Key entry of VHF

The FM-8500’s keyboard accepts no key input while DSC mes- sage is transmitted. (Distress call: inoperative about 3 seconds, other calls: inoperative about 0.5 seconds.)

To unlock it manually, if necessary, press the [CANCEL] key.

The VHF section keyboard accepts no key input when the PTT switch is operated.

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Furuno manual Status of FM-8500 during DSC Call, Key entry of VHF