purpose of little radome?

Kevin Westell · Post by **Kevin Westell** » Tue Jul 06, 2021 12:43 am

Hi. The big ships typically have 2 sizes of radar domes: the big one is 4 feet in diameter, I think this is for internet. What is the purpose of the smaller one - 22 inches or so in diameter? Eg. is this for satellite phone, or is this just an alternate frequency for internet?

greenshirt · Post by **greenshirt** » Tue Jul 06, 2021 10:55 am

Radar doesn't sit in a dome, its a long horizontal array antenna thats size depends on the band they're using.

The largest dome, is the vsat for data communications. The next size is typically the satellite tv, and the small domes are typically telephone.