1st American TV station begins broadcasting, July 2, 1928 | EDN

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Resolution was set at just 48 lines on the mechanical television sets that accepted the broadcasts. Mechanical televisions, also called televisors, were broadcast television systems that used mechanical or electromechanical devices to capture and display video images. Images themselves were usually transmitted electronically and via radio waves. The business lasted only few years, but was start on TV.
Dr. C. Francis Jenkins was also the founder and first president of the Society of Motion Picture Engineers, which would later include television to become the SMPTE.