Home » Frequencies » 11 » d Operation on the 130 to 190 kHz band requires:   a.   a vertical half-wave antenna   b.   special permission to operate in daylight hours   c.   power output limited to 5 watt e.i.r.p. maximum   d.   receivers with computers with sound cards Your answer "d" is not correct. "c" is the right answer. See http://www.rsm.govt.nz/cms/licensees/types-of-licence/general-user-licences/amateur-radio-operators Next