Sorry, mvs sarma, but DRM is not the same as DAB-T. To build a DAB receiver as an individual is not possible. You need to know the algorithm and this is protecting by a licence. The decoder chip is not free on the market. There are a lot of DAB receivers on the market. Sangaen, Pure, Tivoli, Tangent and Teac haves receivers or tuners in the product gamma. I bought the TEAC R-X1DAB on internet www.anaudio.co.uk He is smart from design and I enjoy the purity of the sound.