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.
I guess the person who 'proved' the world was round was Ferdinand Magellan, who was the first man to sail around the world. That was the first time it was conclusively proven that the world was round. Note that he never disproved that a belief in flat Earth was wrong.