Just an add on... to my other post. We have 2 alpha's that we use at home and on the road at motels. They are very convenient to setup and use quick in a motel room for instance but I don't feel they have the range of the Bullet and better antenna and Ethernet cable and talk about that here...
http://purplesagetradingpost.com/sumner/macgregor-navigation/WiFi-1.html
...so I'm not going to repeat it. If you are close in and in an area where you know you don't need the range then I'd consider the alpha otherwise I'd step up to one of the Bullet based solutions. Even most of the vendors that were only selling alpha based systems a year or two ago now have Bullet based options.
In your area of SW Florida with out setup we had WiFi from Punta Gorda south to Marco Island almost everywhere we anchored and we try not to anchor near developed areas.
Then no coverage in the 10,000 Islands or Everglades, but did have WiFi at Everglades City. At Marathon the connection was better on the Gulf side where we anchored at Fanny Keys then in Boot Key Harbor itself, but we did have a connection there. Going north on the Gulf side we had WiFi north of Long Key...
... a ways from anyone.
None at Shell Key quite a ways out. WiFi a ways out at Tavernier Creek. Also at Key Largo our last main anchorage before getting to South Dade Marina. I know we had at least one connection (slow) at over 4 miles and a number of faster ones in the 1 mile range.
If you are going to be cruising new waters I'd get the best you can afford. We will also now get WiFi via an Android phone, but I think it is limited to 2.5 gigs a month before they slow the connection down.
Good luck,
Sum
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