What is ISDB-T

ISDB-T, Integrated Services Digital Broadcasting – Terrestrial, is the Japanese standard for the transmission of digital television over-the-air (terrestrial). Adopted by Japan, Brazil, Peru, Argentina, Philippines, Maldives, Chile, Venezuela, Ecuador, Paraguay, Costa Rica, Bolivia, Nicaragua, Uruguay, Belize, Honduras, Guatemala, El Salvador, Sri Lanka, Botswana.
The ISDB-T bandwidth has 6M and 8M, only Maldives and Botswana both used 8M bandwidth, and other countries are using 6M bandwidth.