The 1924 RCA Radiola model AR812 http://www.geojohn.org/Radios/MyRadios/Superhet/FirstSuperhet.html

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When asked who is the father of radio there can be only one answer, “It's complicated.” http://geekhistory.com/content/geekhistory-explores-who-invented-radio

Does it makes sense to eliminate traditional FM radio in favor of digital broadcasts? http://guru42.org/blog/does-it-makes-sense-eliminate-fm-radio-favor-digital