A LoRaWAN Gateway with RAK2245 Pi HAT on a Raspberry Pi 4 mini PC is described on Hackster.io by  Attila Tőkés. The RAK2245 is a Raspberry Pi HAT featuring a LoRaWAN multichannel concentrator module (SX1301) and a GPS module (Ublox MAX-7Q). There are multiple versions with support for all the major frequency regions (EU433, CN470, ...

This story continues at LoRaWAN HAT for Raspberry Pi

Or just read more coverage at Electronics Weekly