IF you can find one what I would recommend for you is a Linksys WGA-54G, This is not your normal USB Wi-Fi adapter.. It is a Wi-Fi MODEM, your computer sees it as it would see a wired router. You run CAT-5 Cable to it.
What does this mean?
Maximum length of USB cable is 10-30 feet (Not sure) That is how far from your comptuer you can put a USB device, plus your comptuer is usb 1.
Max length for a LAN cable is 300 feet. Allowing you to put the adapter outside the RV, on the roof, on a ladder, wherever you can put it for the best "View" of the router.
This adapter also has an antenna that sticks up, you can google WI-FI Booster RV and for a few cents, yes CENTS, make a device that slips over the antenna and gives you improved range. (Look for a PDF flie on that google links page)
I use one to feed a router in my "house" then link that to my other devices.
Nothin adds excitment like something that is none of your business
Kenwood TS-2000 housed in a 2005 Damon Intruder 377
Appreciate all the help. I notice on the Alfa site there is a disclaimer that USB 1.1 may not provide enough power. But further down on the page a comment is made regarding using a self powered USB hub to boost the signal. I already have one of those, does this sound Kosher?
Also they give two different models, one for 802.11 "b" or "g" service, another for the 802.11 "n". Which of these services do most parks use?
I use the 2000w one and it seems to get them all. I have three- started with the 500w one then got a 1000 when they came out and then the 2000 when it came out. Each was a quantum leap better than the last.
The Jefatech 19db flat panel is a powerful but directional antenna. You have to rotate it to find the strongest signals.