On January 4, 1923 the American Telephone and Telegraph Company (AT&T) made the first network radio broadcast, using special telephone lines to relay a program from its New York City station, WEAF (now WFAN) to a Boston station. On June 3, 1923 WGY participated in AT&T's second network test, which linked WEAF to WGY, KDKA in Pittsburgh, and KYW in Chicago. The Radio Corporation of America (RCA) responded by developing a network operation centered on its New York City station, WJZ (now WABC), and in December 1923 made its first test network connection with a hookup to WGY. The WJZ network never advanced beyond a few affiliates, and struggled with the low fidelity of relying on Western Union telegraph lines to link stations. In 1926, RCA bought out AT&T's network operations, and WGY affiliated with the newly established WEAF-based NBC Red Network. In the Albany market, WABY (now 1400 WAMC) affiliated with the NBC Blue Network, which later became ABC Radio, while WOKO (now 1460 WOPG) became a CBS affiliate. WGY remained with NBC Radio until it folded in 1989.