A test transmission has already begun on Freeview channel 23 in south east Wales.
The broadcaster will be based at Elgin House in St Mary Street in the city centre and will have around 20 staff.
The Made TV group holds licences for local TV in Cardiff, Bristol, Leeds, Middlesbrough and Newcastle.
The other two local TV stations in Wales, Bay TV Swansea and Bay TV Clwyd in Mold, are both due to launch in 2015.
Made in Cardiff will shortly appear on the Sky satellite TV service in the area on channel 134, and Virgin Media channel 159.
Cardiff's local TV channel, Made In Cardiff, has announced that it will begin broadcasting programmes on 15 October at 20:00.