How to scan for OTA channels

lots of bad reception on ota channels the last couple of days. Went to rescan thinking the broadcast networks have shifted frequencies again. But....seems the process has changed since I last scanned. how do we do this now?

Use a web browser and type in the ip address of the hdhr. You can find the ip in the channels web ui settings under sources.

What brand/model tuner?

I had that happen not too long ago. I contacted one of the stations via their Facebook page and they said they'd reduced transmitting power for a couple days while doing maintenance on the antenna. Perhaps this is your situation? I find local broadcasters to be very responsive to answering questions like this.