Video Artifacts

Broadcast

Broadcast moves picture and sound between places. The transmitting side forms the television waveform and its RF channel; propagation alters the radiated field before a receiver selects the channel and recovers the programme.

Picture and sound enter transmitting equipment connected to a broadcast antenna array. Straight direct and terrain-reflected paths reach a directional rooftop antenna, which feeds a receiver.010203VISION + SOUND TRANSMITTERELECTROMAGNETIC TRANSPORTANTENNA + RECEIVERDIRECT RADIO PATHTERRAIN REFLECTION
  1. 01
    Transmitter

    Forms the vision signal, combines the associated sound carrier, and feeds the transmitting antenna.

  2. 02
    Radio channel

    The radiated electromagnetic field crosses terrain and the built environment.

  3. 03
    Receiver

    A receiving antenna, tuner, and demodulators recover picture and sound.