Share an antenna (usually standard on board)
- The AIS transceiver and VHF radio share a VHF antenna.
- This requires an antenna splitter:
- Ensures that both the AIS and radio are securely connected at the same time.
- Automatically prioritizes radio traffic: As soon as you transmit, the AIS is briefly muted to avoid interference.
- Advantage: Only one antenna is required on the mast (optimal for reception range).
Separate antenna for AIS
- You can also install a separate AIS antenna (often on the transom).
- The radio and AIS then operate independently of each other.
- Advantage: No signal loss due to splitters.
- Disadvantage: Additional mounting, antenna height is usually lower → reduced AIS range.
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