Not a real issue

[PaoloAst]

Hello,
I'm struggling trying to repair my favorite DAB radio, but I'm not able to find the T3B-6220CDB. Could you help me in any way?

[RTwTools]

The T3B Tuner was only ever sold to companies, not consumers.
I might still have one or two somewhere, but I think it's easier / cheaper to buy a new radio.