Module 2 - VHF Radio Basics
Squelch, Volume, And Listening Watch
Squelch set too low leaves constant noise; squelch set too high can hide weak calls. Set it just above the background noise threshold, then keep the volume loud enough to hear a call in the cockpit.
A listening watch is active seamanship. It helps you hear distress, urgency, safety broadcasts, traffic movements, and instructions from coastguard, harbour, or other vessels.
Key points
- Adjust squelch after changing set, aerial, or conditions.
- Do not turn the volume down after a call and forget it.
- Dual watch or scan can help but does not replace attention.
- Listen before transmitting to avoid blocking other traffic.
Continue studying VHF Radio Basics
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