Marcus thanks for your help. I was trying with 2 antennas (WA5VJB) varying the usrp tx gain but the results are the same (In this moment I dont have an attenuator). I was reading a past mail from this list (March 25 2012) and there is a similar problem that I have: the q component is not zero, I send a mail to the list asking for it .
thanks
_______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio