Broadcast television

Broadcast television distributes scheduled programming from terrestrial transmitters to receivers using radio waves, typically for reception by antennas.

Television transmitter: A radio transmitter that sends television signals from a broadcast station to receivers. It converts a station’s prepared program signal into the over-the-air transmission.
John Logie Baird: A Scottish inventor who demonstrated an early mechanical television system. His public demonstrations helped make television transmission a visible possibility.
Public broadcasting: Broadcast media organized to serve public interests rather than operate solely for commercial profit. Terrestrial stations provide a widely accessible route for publicly funded programming.
Cable television: A television distribution system that carries channels to subscribers through cable networks. Cable delivers signals over a wired network rather than directly from terrestrial transmitters.
Spectrum allocation: The assignment of portions of the electromagnetic spectrum to different users and services. Television stations depend on regulated frequencies that must coexist with other radio services.
Television antenna: An antenna designed to transmit or receive television radio signals. Receiving antennas capture the terrestrial signals broadcast television sends.
Philo Farnsworth: An American inventor who developed an early fully electronic television system. His electronic image dissector helped establish the technology behind modern broadcasting.
Local television: Television programming and news produced for a particular city or region. Local stations use terrestrial coverage to reach nearby communities.
Satellite television: A television distribution system that relays signals from satellites to receiving dishes. Satellite reception relies on orbital relays, not local over-the-air transmitters.
Television licensing: Government authorization for operating television stations under specified conditions. Licensing governs who may use terrestrial frequencies and where stations can transmit.

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