The CBS NetAlert®-A System for Network Signaling

Network radio broadcasting has changed considerably compared to the pre-television era. Fifteen years ago, the public looked toward radio for a complete repertoire of music, drama, comedy, and news. The affiliate stations were on the network most of the time and bulletins or special programs were automatically received. Any communications from network headquarters to the stations could be handled during station breaks. Now, however, the stations are off the network most of the time, and there is no simple way to alert these stations to receive urgent news bulletins or national emergency announcements.