Table schema:
CREATE TABLE table_name_69 (coverage__transmitter_site_ VARCHAR, power__kw_ VARCHAR, callsign VARCHAR)

Question: What is Coverage (Transmitter Site), when Power (kW) is "10kW", and when Callsign is "DYFX-TV"?
SQL: SELECT coverage__transmitter_site_ FROM table_name_69 WHERE power__kw_ = "10kw" AND callsign = "dyfx-tv"