when did the radio became a household item
mid-1922
title: Radio text: radio for the wartime purposes of aircraft and land communication, radio navigation and radar. After the war, the experiments in television that had been interrupted were resumed, and it also became an important home entertainment broadcast medium. Stereo FM broadcasting of radio was taking place from the 1930s onwards in the United States and displaced AM as the dominant commercial standard by the 1960s, and by the 1970s in the United Kingdom. Early uses were maritime, for sending telegraphic messages using Morse code between ships and land. The earliest users included the Japanese Navy scouting the Russian fleet during the title: Radio in the United States text: Radio in the United States Radio broadcasting in the United States has been used since the early 1920s to distribute news and entertainment to a national audience. It was the first electronic "mass medium" technology, and its introduction, along with the subsequent development of sound movies, ended the print monopoly of mass media. During radio's "Golden Age" it had a major cultural and financial impact on the country. However, the rise of television broadcasting in the 1950s relegated radio to a secondary status, as much of its programming and audience shifted to the new "sight joined with sound" service. Originally title: History of radio text: and department stores were established to sell radios and those owned by newspapers to sell newspapers and express the opinions of the owners. In the 1920s, radio was first used to transmit pictures visible as television. During the early 1930s, single sideband (SSB) and frequency modulation (FM) were invented by amateur radio operators. By 1940, they were established commercial modes. Westinghouse was brought into the patent allies group, which included General Electric, American Telephone and Telegraph, and Radio Corporation of America, and became a part owner of RCA. All radios manufactured by GE and Westinghouse were sold under the RCA title: Radio in the United States text: receiver; the average is five per household. Revenue more than doubled in a decade, from $8.4 billion in 1990 to more than $17 billion in 2000. Radio continues to prevail in automobiles and offices, where attention can be kept on the road or the task at hand, while radio acts as an audio background. The popularity of car radios has led to drive time being the most listened-to daypart on most stations, followed by midday (or the "at work" shift). Transistor radios, available since the 1950s, were the preferred listening choice for music on-the-go for most of the late 20th title: Golden Age of Radio text: Golden Age of Radio The old-time radio era, sometimes referred to as the Golden Age of Radio, was an era of radio programming in the United States during which radio was the dominant electronic home entertainment medium. It began with the birth of commercial radio broadcasting in the early 1920s and lasted through the 1940s, when television gradually superseded radio as the medium of choice for scripted programming, variety and dramatic shows. There were few U.S. network attempts at major scripted radio dramas after the end of several long-running dramatic series in 1962, including "Suspense" and "Yours Truly, Johnny Dollar".