Arduino Pro 4G 通信模块使用 miniPCIe 接口，共有两个型号：EMEA 版使用移远通信 EC200A-EU 调制解调器、Marvell ASR1803 芯片，支持 LTE CAT4 与 3G、2G 网络 ...

but the 4G field has been relatively barren. Turns out, there’s an open source suite called srsRAN that lets you use an SDR for setting up an LTE network, and recently, we’ve found a blog post ...