I've been using OpenWrt for about 12 years across dozens of different device types over the years but I've never used it for cellular or outdoors before. I'm looking for recommendations for an OpenWrt based outdoor LTE router, must be PoE capable and work with modems like a SierraWireless MC7455. I've tried an EZR30 from www.outdoorrouter.com but so far I'm striking out and can't get reliable connection with it and looking for alternatives if we can't get it to work.
My mom lives out in the middle of nowhere and her only Internet is cellular. She has an indoor LTE modem but because of where her house is on the property she doesn't get reliable signal anywhere in or near the house. We've tried signal boosters and outdoor antennae but there just isn't much signal at the site of her house for them to "boost" or pickup on. My brother and I have done extensive signal tests around her property though and have found a rise within Ethernet/PoE range where we want to put a weatherized outdoor LTE device on a mast and then pipe it back to her house. Our speeds at the location have been quite good even from the ground, and from the top of our mast we think we can get line-of-sight to a couple of towers.