DCS Explained CTCSS/DCS Technical Overview For the current ETSI Standard TS 103 236 Continuous Tone Controlled Signalling System (CTCSS) and Digitally Coded Squelch Signalling (DCSS) document click on the Standards tab on this page.
Scott Halleran/Getty. One of the more perplexing storylines of the current NBA season is the growing number of professional basketball players claiming to believe that the earth is flat. Among the flat-Earth truthers are Kyrie Irving, Wilson Chandler, and â most recently â Shaquille O'Neal. Actually, scratch that last one.
Several pre-Socratic philosophers believed that the world was flat: Thales (c. 550 BC) according to several sources, and Leucippus (c. 440 BC) and Democritus (c. 460 â 370 BC) according to Aristotle. Thales thought the earth floated in water like a log.