Before revision: History The motherboard of an early microcomputer, the Microtan 65, showing the silver-cased ASTEC 1111EM36 UHF TV modulator at top left Prior to the introduction of specialised video connector standards such as SCART, TVs were designed to only accept signals through the aerial connector: signals which originated at a TV station, were transmitted over the air, and were then received by an antenna and demodulated within the TV.
After revision: History The motherboard of an early microcomputer, the Microtan 65, showing the silver-cased ASTEC 1111EM36 UHF TV modulator at top left Prior to the introduction of specialised video connector standards such as SCART, TVs were designed to only accept signals through the aerial connector: signals originate at a TV station, are transmitted over the air, and are then received by an antenna and demodulated within the TV.