Hi, I am new to gnu radio and trying to do transmit and receive a file in QPSK. 
Here's my flow graph:


I get clean constellation at the output of costas loop. The part that is not 
working is the decoding. I am not quite sure where to go from here. I have 
tried using PSK modulator and demodulator as well. Any help would be greatly 
appreciated.
Thank you very much, Damo 
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