A:AnswerUnfortunately that all depend on the materials and wiring in the walls of both buildings, as well as the initial signal strength of your current router. You may want to consider just replacing your router with one that has a better range.
A:AnswerIt should. I have a big home and this one extend the range into the yard and the neighbors. No dropping of signals either. Very pleased with it.
A:AnswerI have the NETGEAR Dual Brand AC1900 Combo router & modem. I matched it with: NETGEAR - Nighthawk X4 AC2200 Dual-Band Wi-Fi Range Extender.
It works very well for me
A:AnswerYes. It will work with any backend carrier as long as you have appropriate connectivity for it back to your primary network. That can be hardwire or wireless.
A:AnswerThe extender is a good device and works well in my home. It could work in a camper but, the problem is that you would need to set it up to link with the WiFi provider at the campground. You would have to reset the extender and reprogram it for every campground. In order to do that You would need to access the campgrounds particular broadband / router. My consensus is, that it would not a be a practical and more trouble than it’s worth.