WebThis applies to both the horn and disc type speakers. The disc (or cone speaker) were introduced in the mid late 1920's and were compatible (and proper for use) with any brand 1920's radio. This applies to either battery or the early AC sets. The exception was some of the AC operated sets made in the late '20's required an electrodynamic ... WebView 1920s radio videos Browse 100+ 1920s radio stock photos and images available, or start a new search to explore more stock photos and images. Sort by: Most popular Wartime Morse Code Communications Vintage Victorian sepia image of a woman using a morse code radio communications device housed within an oak box. Vintage Radio
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Web18 hours ago · Sony announced a new set of professional studio headphones: The MDR-MV1. These new open-back studio monitor headphones give listeners a wide frequency … WebJan 26, 2024 · These are early models of the radio headphones in the market today. 1966: Beatlephones Koss Beatlephone John Koss wasn’t only innovative in his creation of the first stereo headphones. He also made … ksh hospital
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