 However, they could not contact the outside world, due to a lack of functioning radio equipment.This situation would not be rectified until 18 April after signallers from the company managed to build a wireless transmitter and were subsequently able to contact Darwin.The Japanese commander, Colonel Sadashichi Doi, sent the Australian honorary consul in Dili, David Ross (who was also the local Qantas agent), to find the commandos and pass on a demand to surrender.