We found the linksys wireless N USB adapter Model: WUSB300N worked just fine without adding a booster of any kind. When in Baton Rouge a year ago it picked up signal from a block away. Have not found a rv park with wifi I could not pick up with this antenna.
There is a product called EnGenius that is used for RV parks to provide park wide coverage. The product also says Senao on the front of the transmitter. They may have something that could help.
I use a D-Link USB WiFi pc adapter unit. It comes with a USB extender cable that allows you to move the pc adapter to a place where you may receive better reception. I can pick up WiFi locations that my PC Bus WiFi adapter card could not even detect.
The one you use Jerryrr is probably the same one I mentioned. I too use the extension cable and place it where I get the best signal. One time I even hung it outside the window. I have set it on top of the pc, on the desk, hanging on the cupboard. I find with a little trial and error I can pull 4 to 5 bars.
