In 1983, SNTV started broadcasting for the first time. This was the logo they used until they ceased in 1991. They used a simple typeface and a interesting design to get viewers to watch them.
In 2011, SNTV was rebooted, and so, it got a makeover. The boxy design was out for a oval look. The typeface changed, and the background was swapped for a 2D map of the world. The signature star was on the T instead of the V.
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In 2014, the logo was updated to be 3D. The colour of the background changed hue slightly aswell. The indents are still from the previous era though.