¿Que es SCA?
((Autorización de Comunicación Secundaria))O comun mente llamado FM Subcarrier
Autoridades de Comunicaciones Subsidiarias
Un sub-portador, conocido también como Autoridades de Comunicaciones Subsidiarias o SCA.
Es una Agencia encargada de distribuir audio separado de el
canal de datos que es transmitido a lo largo del canal de fm tomado de
la señal de audio principal sobre una estación de radio difusión FM.
Cada
radio frecuencia de FM tiene una o dos canales de audio y son
utilizados y aprobados por la FCC para distribuir audio y los cuales
usted no puede oír con un radio ordinario se denominan también como FM Subcarrier..Radio Subcarriers
SCAs
Subsidiary Communications Authority
A subcarrier, known also as
Subsidiary Communications
Authority or SCA,
is a separate audio or data channel which is transmitted along
with the main audio signal over a broadcast station. These subcarrier
channels are not receivable with a regular radio;
special receivers are required.
What types of information is transmitted using SCA?
Many different types. Actually, there's no limit as to what can be transmitted. Here are some examples:
· Background music. This is probably the most common transmission found.
· Reading services. Also very common. Newspapers/books/etc are read for the visually impared, along with other information.
· Foreign language services. Music, news, etc in a variety of foreign languages, aimed at ethnic groups.
· Data transmissions. Stock market data, sports results, etc can be sent. This data is supposedly encoded in some way. Any details would be greatly useful to the monitoring community.
