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Chapter 9

Base station Any radio hardware containing a transmitter and receiver that is located in a fixed place.
Cellular telephone A low-power portable radio that communicates through an interconnected series of repeater stations called "cells"
Channel An assigned frequency or frequencies that are used to carry voice and/or data communications.
Dedicated line A special telephone line that is used for specific point-to-point communications; also known as a "hotline"
Duplex The ability to transmit and receive simultaneously.
Federal Communications Commission (FCC) The federal agency that has jurisdiction over interstate and international telephone and telegraph services and satellite communications, all of which may involve EMS activity.
MED channels VHF and UHF channels that FCC has designated exclusively for EMS use.
Paging The use of a radio signal and a voice or digital message that is transmitted to pagers ("beepers") or desktop monitor radios.
Rapport A trusting relationship that you build with your patient.
Repeater A special base station radio that receives messages and signals on one frequency and then automatically retransmits them on a second frequency.
Scanner A radio receiver that searches or "scans" across several frequencies until the message is completed; the process is then repeated.
Simplex Single-frequency radio; transmissions can occur in either direction but not simultaneously in both; when one party transmits, the other can only receive, and the party that is transmitting is unable to receive.
Standing orders Written documents, signed by the EMS systems medical director, that outline specific directions, permissions, and sometimes prohibitions regarding patient care; also called protocols.
Telemetry A process in which electronic signals are converted into coded, audible signals; these signals can then be transmitted by radio or telephone to a receiver at the hospital with a decoder.
UHF (ultra-high frequency) Radio frequencies between 300 and 3,000 MHz.
VHF (very high frequency) Radio frequencies between 30 and 300 MHz; the VHF spectrum is further divided into "high" and "low" bands.
Created by: azoch