on UK Free TVIf you live in Wales, and have Freeview HD, channel 101 will switch on Tuesday from being the "national service without news" to the full-blown BBC One Wales service in HD.
Again (if you live in Wales) - Freesat (on 108) and Freesat-from-Sky (on 143) viewers will find the Welsh schedule automatically from Tuesday.
On satellite, the new BBC One Wales (and Scotland) services are on the BBC DSat8 transponder, which is:
ASTRA 1N, transponder 61 - 11023MHz Horizontal DVB-S2 23000-2/3 8PSK

BBC One regions by population.
See also BBC - Blogs - About the BBC - BBC One Wales HD launched today and
BBC - Blogs - About the BBC - Changes to BBC satellite transponders in 2013.