DIY Battery powered wireless AP with 4G LTE modem for reliable Capture Pilot and internet access on location, and potentially wireless monitors too : r/Photoassistants
4G LTE USB W/ / Slot WiFi , for PC Desktop | eBay
LDW931-2 4G Router 4G Modem Pocket LTE Wifi Router 4G WIFI Dongle USB WiFi Hotspot, Europe Version LDW931-2 - Walmart.com
Amazon.com: ZTE MF833V 4G LTE USB Modem Dongle, an IoT Device, LiveU Compatible : Electronics
Source 300Mbps 4G lte cpe Mobile Router with LAN Port Support SIM card Portable Wireless Router wifi 4G Router on m.alibaba.com