What Is an Analog TV Signal?
An analog TV signal is made up of a video signal broadcast on AM radio waves, and an audio signal broadcast on FM waves. Analog technology is currently being replaced by digital technology throughout the world. In the U.S., black-and-white analog TV transmissions were standardized in 1941 by the National Television System Committee (NTSC), later followed by an updated color standard in 1953. NTSC was adopted by North America, Central America, parts of South America, Japan and other nations. Other parts of the world developed Phase Altering Line (PAL) and Séquentiel Couleur Avec Mémoire (SECAM) analog standards. Less popular standards were also developed.
