Here is a bit of trivia - - - what came first - - - AM Broadcast of records or electrical recording? The surprising answer is that AM broadcasting of records came first, circa 1919 by Frank Conrad from his garage using call letters 8XK*. Initially, he took requests and then played the requested record(s). Then, he started playing records on a regularly scheduled basis on two days of the week (Wed and Sat). This station eventually evolved into KDKA, Pittsburgh, Pa. That station is still on the air and is a clear-air, 50 Kw affair operating on 1020 KHz. One would have thought that electrical recording would have come first on the timeline since to transmit AM in the form of phonograph records as the source, required amplification (pre-amplification as well as power amplification for the RF carrier-modulator). I think that the same setup could have been used (sans the RF carrier system) to create an electrically cut wax record master by simply using an armature assembly (like loudspeakers of that time period) connected mechanically to a "cutter". But, that is not how events played out. Electrical recording commenced around 1924-25, quite a bit later than AM commercial broadcast.
Craig
*The Antique Wireless Association Review, Volume 33, 2020, pg 28
Craig
*The Antique Wireless Association Review, Volume 33, 2020, pg 28
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