Transmission standards for public and commercial broadcasting exhibit very long life cycles: Successful market introduction of innovations in public broadcast standards requires major investments, including the eventual replacement of receiver sets in all homes.
Broadcasting Systems 2
Over the years several enhancements have been made in order to ensure that the market receivers could continue to receive the service. For example:
FM stereo audio, which is DSB modulated in the audio spectrum around 38 kHz.
AM stereo. Several systems have been proposed, but market acceptance was low.
RDS / HSDS data signals on FM sub-carriers
TeleText
TELETEXT is a system that’s adds data into the television intervals of an analog television signal. This system was developed in 1970s with the purpose of relay informations such as weather, news and TV channel program guides.
AM Broadcasting
AM Broadcasting refers to the wave signals that we hear in radio stations, these waves can be classified into Long, medium and Shortwaves, AM is the abbreviation for Amplitude Modulation.
FM Broadcasting
FM Broadcasting also refers to the wave signals which we hear in radio stations. Different than AM broadcasting FM broadcasting deliver a much better quality waves.
Digital Broadcasting System
Digital broadcast system is the practice of using digital data rather than analogue wave forms for broadcasting over radio frequency bands. Digital broadcasting systems became very popular in television, but it’s still struggling to adopt the rate for radio .
