Thanks. Its just the Wagon gear CB antenna mount. I have the mounting bits from WagonGear and then a splitter box for getting the radio and CB signals to where they need to be. Both the FM and CB signals come in over the single antenna:
http://wagongear.com/shop/antenna-mount/
Works well for...
Not a camper specifically but a trailer of some kind. I couldn't imagine pulling anything more than this little trailer with mine. That's with the stock everything. Maybe with a V8 transplant it might work. But this little trailer is about all she can do with the stock setup.