WNYO Buffalo is converting to ATSC 3.0 on March 18 at 10 AM. To continue receiving the ATSC 1.0 signal, a rescan will be required as they are moving their main feed to WUTV's frequency. I'm not sure what's happening with their sub-channels, or if they will still be available on ATSC 1.0 after that date.
mytvbuffalo.com
WNYO rescan for ATSC 3.0 conversion
WNYO/MYTV Buffalo intends to relocate its ATSC 1. 0 signal to ATSC 3. 0 on March 18th, 2021. If you currently use an antenna to receive WNYO, you may need to obtain new equipment OR need to RESCAN your TV on or after March 18th. **Cable or Satellite viewers will NOT be affected. Generic 'How...