Hello all GnuRadio users, 
I wanted to have a flowgraph without an USRP source and USRP sink, only by 
using the software blocks. The objective is to transmit and receive the BPSK 
modulated packets.  
I attached a thread at the receiver to watch if the packets are demodulated. 
When I run my flowgraph no packet has been received. After that, to see if the 
packets have been decoded in my packet sink, I changed a CC code by adding a 
fprintf function. When i launched the python flow graph, I started to print a 
received packets. 
Can you explain me why I have got this probleme ? Is it a packet queue of my 
watcher in python  or there are a specific problem ?
Thank you for your replay.                                        
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