"3XK" redirects here. For the fictional killer and television episode named after him, see Castle (TV series)
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W3XK is widely regarded as the oldest television station in the United States. It was operated by Charles Jenkins of Charles Jenkins Laboratories from July 2, 1928 to 1934. It was the first station to broadcast to the general public. The station's frequency started out at 1605 kc., but moved to 6420 kc. (6.42 Mc.), and eventually moved to the 2.-2.1 Mc. band. It broadcast from Wheaton, Maryland (just outside of Washington, D.C.), at a resolution of just 48 lines. The way to view television at the time was by mechanical television sets, and this station operated in that way.