How many locations have the call signs dxjp-fm? 
CREATE TABLE table_17487395_1 (location VARCHAR, callsign VARCHAR)
SELECT COUNT(location) FROM table_17487395_1 WHERE callsign = "DXJP-FM"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_17487395_1 (location VARCHAR, callsign VARCHAR) Question: How many locations have the call signs dxjp-fm?  [/INST] SELECT COUNT(location) FROM table_17487395_1 WHERE callsign = "DXJP-FM" </s>