Amazon.com: DO 300Mbps 4G LTE Modem Wi-Fi Wireless Router for RV or Mobile Home with Strong Signal, USB Port and SIM Card Slot with External Antennas for USA/Canada/Mexico SIM Card : Electronics
300mbps High Power Long Range 128m Openwrt 3g/4g Sim Car Wireless Router Wifi Repeater With Vpn 4removable Antenna Strong Signal - Routers - AliExpress
A5-V11 Mini Router Runs OpenWRT (Linux) For Just $8 - CNX Software