Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
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?
### Answer:
SELECT on_air_id FROM table_name_13 WHERE frequency = "0 801"