The DMR628 Tire II Digital Walkie Talkie RF module will be released soon.
DMR628 Tire II can be as node to work with repeater.
If you want do the projects of the DMR618 Tire II , you can try some test with DMR628, it is easier to start.
For DMR628 Tire II , have specified PC software to configure the parameters, and channle switch , microphone , audio amplifier on board, you just connect the power supply and speaker, then you can get a professional DMR module.
For DMR618 Tire II , it is designed for massive production. You need MCU to send command to the module ,and design audio amplifier ,add microphone together to build a DMR product.