Cerro de Punta, Puerto Rico's highest peak, and its TV transmission towers
Comparison of frequency band designations

In broadcasting, digital subchannels are a method of transmitting more than one independent program stream simultaneously from the same digital radio or television station on the same radio frequency channel.

- Digital subchannel

Television stations broadcasting over an analog system were typically limited to one television channel, but digital television enables broadcasting via subchannels as well.

- Television station
Cerro de Punta, Puerto Rico's highest peak, and its TV transmission towers

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Television channel

Terrestrial frequency or virtual number over which a television station or television network is distributed.

Terrestrial frequency or virtual number over which a television station or television network is distributed.

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Digital terrestrial television channels are the same as their analog predecessors for legacy reasons, however through multiplexing, each physical radio frequency (RF) channel can carry several digital subchannels.

Commonly, the term "television channel" is used to mean a television station or its pay television counterpart (both outlined below).

A live television show set and cameras

Local programming

A live television show set and cameras

The terms local programme, local programming, local content or local television refers to a television program made by a television station or independent television producer for broadcast only within the station's transmission area or television market.

For equivalent electronic program guide listings for set-top boxes, the term is used mainly with PEG stations and networks which do not have a schedule compiled by a cable operator as a default placeholder; other instances are with only broadcast stations who outright refuse or do not release their program listings due to lack of staff, though as advertisers usually demand a minimum schedule to place their ads on a television station (and most of these stations are associated with smaller national digital subchannel networks which do provide a default schedule for distribution), the vast majority of broadcast stations do provide program listings.

A broadcasting antenna in Stuttgart

Network affiliate

Local broadcaster, owned by a company other than the owner of the network, which carries some or all of the lineup of television programs or radio programs of a television or radio network.

Local broadcaster, owned by a company other than the owner of the network, which carries some or all of the lineup of television programs or radio programs of a television or radio network.

A broadcasting antenna in Stuttgart

This distinguishes such a television or radio station from an owned-and-operated station (O&O), which is owned by the parent network.

Further, with the ability of digital television stations to offer a distinct programming stream on a digital subchannel, traditional dual affiliation arrangements in which programming from two networks is combined into a single schedule are becoming more rare.