I have studied intensively the usb and set top box for dvb-t2 on sale in both ebay and aliexpress. I have yet to come across one product that claims v1.3.1 compliance.
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Here is one: FTA HD DVB T2 Digital DVB T2 Terrestrial Receiver Set Top Box, View DVB T2, OEM Product Details from MAGIX DIGITAL TECHNOLOGY CO., LIMITED on Alibaba.com