Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_11147852_1 ( channel_tv___dt__ VARCHAR, year_of_affiliation VARCHAR )

### Question ###
What channels have stations that were affiliated in 2002?

### Accurate SQL ###

SELECT channel_tv___dt__ FROM table_11147852_1 WHERE year_of_affiliation = "2002"