Thailand NBTC do not permit radio equipment operating in 5G Band 28 and 41.
The reason for this decision was due to interference WWAN network and 5G Band 28 and 41. WWAN users reported interference with 5G in the following frequencies:
Tx:703-748 MHz Rx:758-803MHz
Tx/Rx:2500-2690MHz
Contact GMA Labs for further information.