Want to build own outdoor router

Hi guys, im doing a University Project can you help?
I want to make something like this

Most important thing is to have a SIM CARD adaptor.
I already have the antenas to have a long range and the OS (OpenWrt).
I just want to knew where i can find a motherboard or a router that has the simCARD and 4 antenas so i can build one.

Thanks for your help

take this as an example: https://whrl.pl/RfdmHT

1 Like

Hello @popsy,
The librerouter.org has two sim card options, miniPCIe, 2.4ghz integrated radio, and is open source software and hardware, and it has maintream support on OpenWRT.
Hope it helps