Furuno LH-3000 Sounding Warning Signals, Description of warning signals, Manual warning signals

2. OPERATION

2.10 Sounding Warning Signals

Your Loud Hailer has eight different warning signals: two manual and six automatic. The two manual signals, YELP and MAN, are designed to be sounded at each press of the PTT switch on the microphone. The six automatic signals are sounded when the [FUNC] key is operated.

Only the horn speakers sound warning signals and the volume is automatically set to maximum when sounding warning signals.

Description of warning signals

Manual warning signals

MAN:	Signal for passing. The lengths and timing of the horn blasts are controlled by
	pressing the PTT switch on the microphone.

YELP: Yelp type emergency siren.

500 Hz

250 Hz

1 s

Yelp signal

Automatic warning signals

UNWY: Warning signal for power-driven vessels underway. One 5-second blast at 120 second interval intervals.

5 s

120 s

Underway signal

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