What is the frequency of the model whose part number is ado520biaa5do? 
CREATE TABLE table_13869651_3 (frequency VARCHAR, part_number_s_ VARCHAR)
SELECT frequency FROM table_13869651_3 WHERE part_number_s_ = "ADO520BIAA5DO"
### Context: CREATE TABLE table_13869651_3 (frequency VARCHAR, part_number_s_ VARCHAR) ### Question: What is the frequency of the model whose part number is ado520biaa5do?  ### Answer: SELECT frequency FROM table_13869651_3 WHERE part_number_s_ = "ADO520BIAA5DO"