CREATE TABLE table_name_52 (frequency__mhz_ VARCHAR, type VARCHAR, call_letters VARCHAR)

Frequency (MHz) that has a Type of primary, and a Call letters of ktbb-fm has what total number?
SELECT COUNT(frequency__mhz_) FROM table_name_52 WHERE type = "primary" AND call_letters = "ktbb-fm"
SELECT COUNT("frequency__mhz_") FROM "table_name_52" WHERE "call_letters" = "ktbb-fm" AND "primary" = "type"