I always use the SDA on the tower. It is doubtful, but possible that the transmitter location will change. Regardless, you will need to have an antenna cut to the specific frequency for optimum performance. Or a set frequency range if multiple transmitters are at 1 location like Mt Wilson in Los Angeles. The digital transition will be to an alternate frequency. Most likely a new antenna will be required.
This is CABL.com posting #248056. Tiny Link: cabl.co/mbcG4