WEAF maintained a regular schedule of radio programs, including some of the first commercially sponsored programs, and was an immediate success.
In an early example of "chain" or "networking" broadcasting, the station linked with Outlet Company-owned WJAR in Providence, Rhode Island; and with AT&T's station in Washington, D. New parent RCA saw an advantage in sharing programming, and after getting a license for radio station WRC in Washington, D.
In the 1930s, NBC also developed a network for shortwave radio stations, called the NBC White Network.
Various histories of NBC suggest the color designations for the two networks came from the color of the pushpins NBC engineers used to designate affiliate stations of WEAF (red) and WJZ (blue), or from the use of double-ended red and blue colored pencils.On April 5, 1927, NBC expanded to the West Coast with the launch of the NBC Orange Network, also known as the Pacific Coast Network.The network is part of the Big Three television networks.NBC is sometimes referred to as the "Peacock Network", in reference to its stylized peacock logo, introduced in 1956 to promote the company's innovations in early color broadcasting. Founded in 1926 by the Radio Corporation of America (RCA), NBC is the oldest major broadcast network in the United States.Following the Comcast merger, Zucker left NBCUniversal and was replaced as CEO by Comcast executive Steve Burke.
NBC has thirteen owned-and-operated stations and nearly 200 affiliates throughout the United States and its territories, some of which are also available in Canada via pay-television providers or in border areas over-the-air; NBC also maintains brand licensing agreements for international channels in South Korea and Germany.The early effort fared poorly, since the uninsulated telegraph lines were susceptible to atmospheric and other electrical interference.In 1925, AT&T decided that WEAF and its embryonic network were incompatible with the company's primary goal of providing a telephone service.with a second inversion C Major triad as its outline.An executive at NBC's New York headquarters heard the WSB version of the notes during the networked broadcast of a Georgia Tech football game and asked permission to use it on the national network. A variant sequence with an additional note, G-E'-C'-G, known as "the fourth chime", was used during significant events of extreme urgency (including during World War II, especially in the wake of the December 1941 attack on Pearl Harbor; on D-Day and during disasters).This was followed by the debut of the NBC Gold Network, also known as the Pacific Gold Network, on October 18, 1931.