It refers to the process of converting analog television stations in the United States to digital format, specifically within the frequency band of 1803.5-1808.7 MHz. This frequency range was assigned to analog TV channels 2-6.
During the digital television transition in the US, which took place from 2009 to 2010, analog TV stations had to cease broadcasting and switch to digital broadcasting. As part of this transition, TV stations had to convert their video channels from the analog format to the digital format within the designated frequency range.
TVS CONV 1803.5 1808.7 VC specifically pertains to the conversion of video channels within this frequency band, ensuring that the video content transmitted by TV stations is in digital format.