Problem with bbn_80211b_tx.py

Hi, I’m try to use BBN module (on ubuntu platform) to trasmit to usrp.

I use the example code given by BBN, I print the result of:

./bbn_80211b_tx.py

Using TX d’board B: Flex 2400 Tx MIMO B

gr_fir_ccf: using SSE
spb: 8
interp: 32

Why I can’t see any packet at the receiver?
Where is the error?

Thanks

Mori Jacopo