Final answer:
After providing ID and ETA, the next step is to relay the patient's baseline vitals.
Step-by-step explanation:
After providing your unit ID and ETA when delivering a radio report to the receiving hospital, the next step is to relay the patient's baseline vitals. This includes vital signs such as heart rate, blood pressure, respiratory rate, and temperature. It provides important information about the patient's current condition and helps the receiving hospital prepare for their arrival.