I found these documents helpful for setting up a Ubiquity Bullet. The key points are to properly assign a subnet address that won't conflict with the campground server or your router (it's common for the default to remain 192.168.1.1-100 or 192.168.2.1-100) and also set the DNS to Google's public Name Servers 8.8.8.8 and 8.8.4.4 to avoid conflicts. Also set your bullet as an "Access Point" (be very careful when testing other configurations or you'll end up climbing on the roof to hold down the tiny button on your bullet to reset it to default)
https://help.ubnt.com/hc/en-us/articles/205197710-airMAX-Configure-a-Long-range-WiFi-Client
http://www.dmbruss.com/images/RVTech/StepsToConfigureBullet.pdf
