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_13 ( on_air_id VARCHAR, frequency VARCHAR )

### Question ###
What is the On-air ID of the broadcaster at frequency 0 801?

### Accurate SQL ###

SELECT on_air_id FROM table_name_13 WHERE frequency = "0 801"