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_name_6 ( frequency VARCHAR, owner VARCHAR, call_sign VARCHAR )

### Question ###
What is the frequency for the radio owned by bell media with a call sign of chsu-fm?

### Accurate SQL ###

SELECT frequency FROM table_name_6 WHERE owner = "bell media" AND call_sign = "chsu-fm"