General Questions

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?