Hi John, Thanks for your reply.
I am using RFX2400 2.3-2.9GHZ RX/TX I increased the message length from 4 to 100 at the sender. But I still can not observe the signal. (Maybe because of the power of signal is too small?) The USRP N210 can receive signal at frequency around 2.9GHz. So I think the hardware of USRP still works. But I cannot make it work now. Thanks for your help. -Su -- View this message in context: http://gnuradio.4.n7.nabble.com/Some-problem-with-my-USRP-N210-tp50723p50726.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio