Ina tāpirihia te ngaohiko ki te tioata hiko-whatu, ka rerekē te taupū whakaata me ētahi atu āhuatanga whatu o te tioata, ka huri i te āhua pōraritanga o te ngaru mārama, kia huri ai te mārama porowhita-pōraritanga ki te mārama pōraritanga porowhita, kātahi ka huri hei mārama pōraritanga rārangi mā roto i te pōraritanga, ā, ka whakarerekētia te kaha o te mārama. I tēnei wā, kei roto i te ngaru mārama ngā mōhiohio oro, ā, ka horapa ki te wāhi kore utu. Ka whakamahia te pūoko whakaahua hei whiwhi i te tohu whatu whakarerekētanga ki te wāhi whiwhi, kātahi ka whakahaerehia te huringa ara iahiko hei huri i te tohu whatu hei tohu hiko. Ka whakahokia te tohu oro e te demodulator, ā, hei whakamutunga ka oti te tuku whatu o te tohu oro. Ko te ngaohiko e whakamahia ana ko te tohu oro kua tukuna, ka taea te whakaputa mai i te rekoata reo irirangi, i te puku rīpene rānei, ā, he tohu ngaohiko e rerekē ana i roto i te wā.