The RA685 applied for certification for the European Enthusiast band, so it works in the European enthusiast band. Its frequency is: 144-146MHZ(RX/TX) 430-440MHZ(RX/TX) However, some customers said that when the RA685 is enabled to work at full range by using the shortcut keys, it will be automatically adjusted to the hobbyist band the next time it is switched on. Therefore, in order to make RA685 better serve customers. We are upgrading this problem. So, firstly, you should know if your firmware is the latest version. Hold the side key 2 and turn on the radio, if you can check the firmware version, it means you can upgrade the new firmware. If not, please upgrade the firmware first. Contact us for …
