Search results
Results from the WOW.Com Content Network
In the 1930s some radios were manufactured using Catalin, which is the phenolic resin component of bakelite, with no organic filler added, but nearly all historic bakelite radios are the standard black-brown bakelite color. Bakelite as used for radio cabinets was traditionally brown, and this color came from the ground walnut shell flour added ...
The Timid Soul was a 1941–1942 comedy based on cartoonist H. T. Webster's famed Caspar Milquetoast character, and Robert L. Ripley's Believe It or Not! was adapted to several different radio formats during the 1930s and 1940s. Conversely, some radio shows gave rise to spinoff comic strips, such as My Friend Irma starring Marie Wilson. [19]
The early history of radio is the history of technology that produces and uses radio instruments that use radio waves. Within the timeline of radio, many people contributed theory and inventions in what became radio. Radio development began as "wireless telegraphy". Later radio history increasingly involves matters of broadcasting.
The timeline of radio lists within the history of radio, the technology and events that produced instruments that use radio waves and activities that people undertook. Later, the history is dominated by programming and contents, which is closer to general history .
Each time the radio was tuned to a different station frequency, the BFO frequency had to be changed also, so the BFO oscillator had to be tunable. In later superheterodyne receivers from the 1930s on, the BFO signal was mixed with the constant intermediate frequency (IF) produced by the superheterodyne's detector. Therefore, the BFO could be a ...
11 May – The Pittsburgh Police begin broadcasting with "radio patrol cars" and the region's first emergency band. 24 May – Polskie Radio begins transmitting its national programme from a new long-wave station at Raszyn, outside Warsaw. With a power of 158 kW, it is the most powerful transmitter in Europe at this time. [2]
Ray, William B. FCC: The Ups and Downs of Radio-TV Regulation (Iowa State University Press, 1990) Rosen, Philip T. The Modern Stentors; Radio Broadcasting and the Federal Government 1920–1934 (Greenwood, 1980) Settel, Irving. A Pictorial History of Radio (1960) Sies, Luther F. Encyclopedia of American Radio: 1920–1960 (McFarland, 2nd ed. 2 ...
Milestones in radio: the first half century (1895–1945). The UNESCO courier (February 1997), p. 16–21; Radio Review/Radio Listeners Guide (1925–1929), Broadcasting Yearbook (1935–2010), World Radio TV Handbook (1947–) Berg, Jerome S. The early shortwave stations: a broadcasting history through 1945 (2013) radioheritage.net