Using the CP100d Series portable two - way radios is a breeze. Just turn on the radio, select the channel you want to use, and start communicating. When you're ready to switch to digital, follow the on - screen prompts. Remember to keep the radio away from water and extreme heat. To maintain it, clean the exterior regularly with a soft cloth. Replace the battery when it starts to lose its charge quickly. If you face any issues, contact the customer support team.