At RAK store, you have to select the frequency of the RAK2287:
My questions are:
1, are there ANY differences between the hardware/firmware of RAK2287 of different frequencies?
2, if there are differences, is this information accessible through the SPI or other interfaces so that application can match it against Lora packet forwarder configurations?
3, if there are differences, will it cause any problem when a AU915 RAK2287 is configured as US915 in Lora packet forwarder?