I have an Alfa booster and mini wireless router that are in a waterproof box on top of my
bimini. You can buy it on amazon and put it together yourself for a fraction of the cost of
buying the system ready made. You will need a 12v
power source which for me was the cigarette lighter
plug at the
helm station on my
catamaran. You will then have wireless internet to multiple
computers inside the
boat without having to run a cable inside and hard wire to a
laptop.
Mine works great and pulls in signals from some distance away. The only problem is finding an unsecure
network upstream.