[Discuss-gnuradio] ADC block

hello

               i think to implement GMSK modulation , but i did not foind ADC block to convert it from analog to digital signal..

can any one guide me hoe can it is possible to do..?

i use signal source  and noise source and add it and i want to use GMSK mod nut is shows error of i/o sink digital  and source analog 

guide me ..

--

Thanks and regard:

MR.Maheshkumar Pandit

call @ 9662784649