Editing Broadcast network (section)

===NBC===
{{main|NBC}}
After acquiring WEAF and AT&T's network assets in 1926, RCA created the [[NBC|National Broadcasting Company]] (NBC) and reorganized the WEAF chain (with [[WGR]], [[WTIC (AM)|WTIC]], [[WTAG]], [[WEEI (AM)|WEEI]], [[WHJJ|WJAR]], [[WCSH|WZAN]], [[WFIL|WFI-WLIT]], [[WPGP (AM)|WCAE]], [[WTEM|WRC]], [[WTAM]], [[WSAI]], [[WWJ (AM)|WWJ]], [[WGN (AM)|WGN]], [[WOC (AM)|WOC]], [[KTRS (AM)|KSD]], [[KCSP (AM)|WDAF]], [[WCCO (AM)|WCCO]]) as the [[NBC Radio Network|NBC Red]] network and the WJZ chain as the [[Blue Network|NBC Blue]] network (with [[WBZ (AM)|WBZ]], [[WBZ (AM)|WBZA]], [[KYW (AM)|KYW]], [[KDKA (AM)|KDKA]]). (One explanation for the color designations is that they reflected the red and blue push pins used on a map that AT&T originally used to designate the affiliated stations on the two networks.)<ref name="snyder"/>

On 23 December 1928, NBC instituted the first permanent transcontinental network. As of September 1938, when there were 154 NBC outlets; 23 composed the basic Red network and 24 composed the basic Blue network. Supplementing these basic networks were 107 stations, of which one was available only to the basic Red network, six were available only to the basic Blue network, and the remainder available to either. NBC also had a chain of [[shortwave transmitter|shortwave stations]], called the "NBC White Network", in the 1930s.

In 1941, the [[Federal Communications Commission]]'s (FCC) ''Report on Chain Broadcasting''<ref>Federal Communications Commission: [https://babel.hathitrust.org/cgi/pt?id=uc1.$b78643&view=1up&seq=7 ''Report on Chain Broadcasting''] (May 1941).</ref> reviewed the alleged monopolistic practices of the radio networks. The FCC was concerned NBC Red and NBC Blue were anti-competitive. Because the FCC did not have the power to directly regulate networks, it decided to enact regulations affecting the stations, and adopted standards intended to force NBC to relinquish one of its networks. In 1943, the Supreme Court upheld the FCC's power to enforce its chain broadcasting regulations.<ref name="Rivera-Sanchez">Rivera-Sanchez, M. (1998). Report on Chain Broadcasting. History of the Mass Media in the United States, An Encyclopedia, pg 590–591.</ref><ref>[[NBC, Inc. v. United States|National Broadcasting Co. v. U.S.]], 310 U.S. 190 (1943).</ref> As a consequence, NBC Blue was sold to [[Edward Noble]] who later named it the [[American Broadcasting Company]] (ABC).<ref name="Rivera-Sanchez"/> After NBC Blue was divested the remaining NBC Red network was renamed the NBC Radio Network.<ref name="snyder"/>