Table schema:
CREATE TABLE table_24673888_1 (power_kw VARCHAR, station_type VARCHAR, callsign VARCHAR)

Question: What is the power in KW that has a station type of relay and a callsign of DXCL-TV?
SQL: SELECT power_kw FROM table_24673888_1 WHERE station_type = "Relay" AND callsign = "DXCL-TV"