Using Dish DVR 522 standalone

I have a Dish DVR 522 receiver that we bought before and don’t have Dish service now. I want to use the receiver in children’s room to record programs as a standalone DVR getting just over the air TV signals. How do I do it? Plugging the co-axial cable into TV In socket on the receiver still makes the DVR search for Dish signals. Can it be bypassed so that the DVR just shows the TV input as a pass through with the capability to record? We don’t intend to take service from Dish. Thanks in advance for your kind help

I doubt you will be able to record over the air as these are setup for only Dish Network signals so without having Dish Network then this is just a piece of junk now

Can’t be done. DirecTV boxes are the same way.