[This is preliminary documentation and subject to change.]
The C Tunable field specifies whether the channel represents a broadcast that can be tuned to. For example, users cannot tune to some Program Guide channels.
This field enables applications to quickly determine whether a channel can be tuned to without having to query the Channel Property table. This field is provided to enhance performance, as are the property fields in the Episode table.
This field's values are as follows:
Key: Not applicable
Index: Yes (duplicates okay)
Data type: Yes/no
Field size: Not applicable
Default value: Yes
Required: No