I'm working on a project that needs cell network Internet connectivity. I know that I can use a USB dongle for this but, some of these areas are remote and will have marginal cell service so I really need the ability to connect a high gain or directional external antenna to the modem. Something like the Pi Anywhere 4G hat (https://www.pianywhere.com/product/pian ... ry-pi-hat/) would be a good solution except that it's a little outside my budget for this project and I don't think it will work with the CM3 and I/O board combo.
Does anybody have a hardware suggestion that would be a good fit?
Thanks in advance!