Question: What is the Callsign in Brisbane with a Freq currently of 4RPH?
SQL: SELECT "Callsign" FROM "2-17188917-2" WHERE "Area served" = 'Brisbane' AND "Freq currently" = '4RPH';

Question: What is the Freq currently of the 4GG Callsign?
SQL: SELECT "Freq currently" FROM "2-17188917-2" WHERE "Callsign" = '4GG';

Question: What is the Community Band with a 4BCB Callsign?
SQL: SELECT "Band" FROM "2-17188917-2" WHERE "Purpose" = 'Community' AND "Callsign" = '4BCB';

Question: What is the Purpose of the Callsign with a Freq currently of 4GLD?
SQL: SELECT "Purpose" FROM "2-17188917-2" WHERE "Freq currently" = '4GLD';

Question: What is the Purpose of the Callsign with a Freq currently of 4RPH?
SQL: SELECT "Purpose" FROM "2-17188917-2" WHERE "Freq currently" = '4RPH';