Question: What is the broadcast are for channel 1?
SQL: SELECT "Broadcast area" FROM "1-2638104-1" WHERE "Channel" = 1.0;

Question: What is the call sign for channel 6?
SQL: SELECT "Callsign" FROM "1-2638104-1" WHERE "Channel" = 6.0;

Question: What is the channel number for TBS?
SQL: SELECT MIN("Channel") FROM "1-2638104-1" WHERE "Channel name" = 'TBS';

Question: How many channels are there in the Greater Tokyo area?
SQL: SELECT COUNT("Channel") FROM "1-2638104-1" WHERE "Broadcast area" = 'Greater Tokyo';

Question: What is the signal power for JOAB-DTV?
SQL: SELECT "Signal power" FROM "1-2638104-1" WHERE "Callsign" = 'JOAB-DTV';