Ktla
In short
KTLA is a major television station based in Los Angeles, California, that serves as the West Coast flagship for The CW network.
In plain words
It is a local TV channel that broadcasts news, weather, and entertainment to the Los Angeles area. It is owned by Nexstar Media Group and operates out of Hollywood.
A simple example
A person in Los Angeles might tune into channel 5 to watch the morning news or local weather reports.
Why it matters
It was the first commercial television station in the western United States. It remains one of the most important local media outlets for the California coast.
Easy to mix up
Do not confuse it with KTLA-TV's sister stations or other local news channels with similar acronyms.