In a statement, the national transmission company CRa says this is up from around a quarter at the end of 2018, adding that it has certified most of the receivers and they have a verified DVB-T2 label.
CRa also says that almost half (46%) of people can expect to see terrestrial TV services in HD.
The public broadcaster CT already distributes content in native HD on the transition network and will offer full HD on its final DVB-T2 network.
Barrandov and Seznam will also broadcast content in HD.
The transition to DVB-T2 will start in the Czech Republic at the end of November and continue until mid-2020.
Viewers will be able to receive over 30 TV channels free of charge, along with a range of interactive services, following the transition to DVB-T2.