This General Order establishes procedures for medical communications using the MIEMSS Emergency Medical Resource Center (EMRC) radio system. . Voice orders to EMS personnel via radio, telemetry, or cellular phones shall be given by or under the direction of the EMS System Medical Director (EMS MD) or designee, who shall be either an Emergency Communications Registered Nurse (ECRN) or physician. frequencies below 470 MHz, 470-512 MHz, 700 MHz, 800 MHz, 4. 9 GHz) under Part 90 of the Commission's rules, and the microwave bands under. . This document was supported by the Preventive Health and Health Services Block Grant from the Centers of Disease Control and Prevention (CDC) and a grant from the Department of Commerce. Points of view or opinions expressed in this document are those of the authors and do not necessarily represent. . What is Base Station in EMS? What is Base Station in EMS? What are the 5 things to do when talking to a patient? How are digital equipments used in EMS? What does the FCC regulate? Don't know? What is Base Station in EMS? What is a Land Mobile Radio System? What is a portable radio? What is a. . Many transmissions are between the mobile radio within the ambulance and the dispatcher at a base station. Carry portable radio whenever you leave unit. . Patients must be able to access the system, the system must be able to dispatch units, EMTs must have a means of communicating with medical direction and receiving facility, and EMTs must be able to communicate vital information to other personnel. It is a complex network composed of people. .