ADLIB--SPEAKING WITHOUT A SCRIPT
AM (AMPLITUDE MODULATION)/FM (FREQUENCY MODULATION)--BROADCASTING METHODS IN WHICH THE STRENGTH AND FREQUENCY, RESPECTIVELY OF THE CARRIER WAVES ARE VARIED TO MATCH THE CHANGES IN THE AUDIO-FREQUENCY WAVES
AMPLITUDE--THE STRENGTH OF A WAVE
AUDIO-FREQUENCY WAVES--ELECTRIC WAVES THAT REPRESENT THE SOUNDS OF A RADIO BROADCAST
CALL LETTERS--INITIALS THAT IDENTIFY A RADIO STATION, SUCH AS STATION WKRS IN WAUKEGAN, IL
CARRIER WAVE--COMBINES THE SOUNDS OF A RADIO PROGRAM WITH AUDIO-FREQUENCY WAVES
CHANNEL--RADIO FREQUENCY ASSIGNED TO A STATION
CIRCUIT--ARRANGEMENT OF ELECTRONIC DEVICES THAT PROVIDES A PATHWAY FOR THE ELECTRICAL CURRENT THAT OPERATES A RADIO
FREQUENCY--NUMBER OF TIMES A WAVE VIBRATES EACH SECOND
GROUND WAVES/SKY WAVES--RADIO WAVES THAT COME FROM A TRANSMITTER AND GO INTO THOSE TWO ELEMENTS, RESPECTIVELY
HAM--NICKNAME GIVEN TO AN AMATEUR RADIO OPERATOR
HERTZ/KILOHERTZ (kHz)/MEGAHERTZ (MHz)--HERTZ IS A UNIT USED TO MEASURE FREQUENCY AND EQUALS ONE CYCLE PER SECOND. KILOHERTZ AND MEGAHERTZ = 1,000 AND 1 MILLION HERTZ, RESPECTIVELY.
LINE-OF-SIGHT--THE LINE IN WHICH FM WAVES TRAVEL
LIVE BROADCAST/PRE-RECORDED--SOUNDS MADE AT THE MOMENT OF THE BROADCAST AND SOUNDS MADE FOR LATER USE, RESPECTIVELY
MULTIPLEXING--SENDING OF TWO CHANNELS OF SOUND THAT CAN BE PICKED UP BY STEREO RADIOS
NETWORK--AN ORGANIZATION PROVIDING PROGRAMMING TO A GROUP OF STATIONS THAT BELONG TO IT
STEREO(PHONIC) SOUND--COMES FROM AT LEAST TWO SPEAKERS TO MATCH AS CLOSELY AS POSSIBLE THE SOUNDS PEOPLE WOULD HEAR WITH TWO EARS
Source: WORLD BOOK ENCYCLOPEDIA (1999 ed.)