Intercarrier method: Difference between revisions

Revision as of 16:49, 15 January 2011

Revision as of 08:31, 17 January 2011

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In [[television]], unlike monophonic radio, at least two signals should be transmitted; [[audio signal|audio]] (AF) and [[video signal|video]] (VF) signals.

Transmitting those signals by means of separate [[transmitters]] and [[Antenna (radio)|antenna systems]] is a very costly solution. Because every stage must be used twice , one for AF and one for VF. Two separate transmitters, a high power combiner and a common antenna system, known as '''[[split sound''' system]], is also quite costly. But if the signals are combined at an earlier stage, number of costly outer stages is reduced.

The same logic also applies to [[television receiver|receiver]] sets. If the modulated signal is separated just before the [[picture tube]] the number of separate stages for AF and VF is minimum.