My WiFi/ Cellular solution
For years I have used a WiFi Ranger on a telescoping pole, mounted in a piece of PVC pipe when I park at a campsite. However, there was no cellular in this arrangement. I was/am loathe to mount an antenna on the roof and have to mess with removing the refrigerator to feed a wire down into the trailer so most current solutions are no go.
I decided to stick with my current concept and bought a Pepwave Max Mk2 router with a Poynting MIMO antenna giving cellular and WiFi. Because this antenna is heavier, I wanted a better pole and a recent post pointed to Metalsdepot.com, where I purchased a thick wall Al tube for mounting and found a right angle mount. Although I used some tie wraps for insurance, the antenna is solidly screwed through the mount into the threaded ports in the bottom of the antenna. The power is provided through the black/red cable that I plug in the battery box when I want to use the system. The gray box on the propane tank cover is the router mounted in a waterproof electrical box. No holes, easy to upgrade, etc.
This arrangement works like a charm in my driveway, picking up all of the neighborhood WiFi and a strong cell signal on ATT. I could insert a second SIM card, but I see no need. My first trip is next week and I am looking forward to seeing how this solution works out in populated and remote locations.