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  1. Vesper Marine Support Portal
  2. Frequently Asked Questions
  3. General Questions

General Questions

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Common questions about AIS and transponder installations.

  • What is AIS?
  • What kinds of vessels will be visible to me?
  • How often is AIS information received?
  • Should I use a splitter or a dedicated VHF antenna?
  • Can I use my existing VHF antenna?
  • What can I do if I'm hearing too many alarms?
  • What apps can I use on iPad, iPhone and Android?
  • What is the difference between types of AIS equipment?
  • Who uses AIS?
  • Using marinetraffic.com to test if you are transmitting
  • Do I have to use a dedicated GPS antenna or can I use the one I have?

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