No, I do not have any channels showing up twice, however I do not use an OTA antenna. There are a lot of reasons that antenna channels could show up twice such as the same broadcast being transmitted on two frequencies. Even then, not all channels would have duplicates.
You may be showing both the SD and HD version of the channels. You can hide the duplicate SD channels.
1) Select Settings on the Menu tab
2) Select Guide
3) Under Advanced Set Hide Duplicate SD Channels to On
I did not realize that your post was concerning Orby TV. My solution was for Dish receivers. Sorry for the confusion.
No, I do not have any channels showing up twice, however I do not use an OTA antenna. There are a lot of reasons that antenna channels could show up twice such as the same broadcast being transmitted on two frequencies. Even then, not all channels would have duplicates.