Question: What Band number has a Power (W) of 400 or less?
SQL: SELECT SUM("Band") FROM "2-18529884-7" WHERE "Power (W)" < 400.0;

Question: What Band's Power (W) is 400 or less?
SQL: SELECT MAX("Band") FROM "2-18529884-7" WHERE "Power (W)" > 400.0;

Question: What is the Wavelength of Frequency (MHz) 14.050–14.150?
SQL: SELECT "Wavelength" FROM "2-18529884-7" WHERE "Frequency (MHz)" = '14.050–14.150';