As the wireless industry grabs a bigger chunk of the television dial, the remaining free over-the-air stations are going to be on the move starting next year. More than 900 American television stations will get new channel numbers after the move is complete, all to squeeze signals into the unchanged VHF and diminished UHF dial.

The folks at Rabbit Ears have a handy tool that will guide you through the changes, and they are enormous. Just use the drop-down box next to “Market” and find your city. Here at Stop the Cap! HQ, all but two stations in Rochester, N.Y., are getting new channel positions:

TV station reassignments as a result of the channel repack for Rochester, NY. The first two columns show the new vs. current actual channel number.

Most viewers won’t notice a big difference because the FCC is allowing stations to continue to market themselves with a virtual channel number than usually dates back to before the migration to digital TV broadcasting. But the channel changes can still be important for viewers using an antenna, especially if your local station(s) migrate into the VHF or UHF bands where they might not have been before. Two different antennas are sometimes required to get good reception from both bands. The traditional “rabbit ears” indoor telescoping antenna is usually designed for VHF reception, while small loop antennas work better for UHF. Various other antenna configurations can work for both bands, some better than others. Outdoor aerials can be designed to receive VHF, UHF or both. You may need an antenna upgrade if your antenna isn’t designed to receive the station(s) you want to see after they move.