Complex sentence: The call sign was then changed to the current WSYR-TV in July 2005 creating a small amount of confusion as rival NBC affiliate WSTM-TV was known as WSYR-TV from February 15,1950 until its sale to the Times Mirror Company in 1980.
Split into simpler sentences: The call sign was then changed to the current WSYR-TV in July 2005. This created a small amount of confusion, as rival NBC affiliate WSTM-TV had been known as WSYR-TV from February 15,1950 until its sale to the Times Mirror Company in 1980.