Dear Aadil and dear all, Thank you for your answer.
I work on the opportunist access to UHF bands and I try to detect the channels where a DVB-T (HDTV ?) signal is present (thanks to some correlation methods). I then compare the power of the received signal in the bands where I have detected a DVB-T signal. Nevertheless, I am facing some issues with the signal dynamic range. In fact, whatever the value of PGA, I get a signal with a very low dynamic range (663 "states"). I guess this is due to the artefact at the beginning of the received signal which has a very high amplitude (close to 6000 - the maximal value reached by the "informative" signal is only 300). I would hence know is there is a way to reinitialise the AGC to improve the dynamic range of the useful part of the signal (that I get with the script usrp_rx_cfile.py). I realised that I don't use the last version of GNU Radio (3.0.4 instead of 3.1.1). Maybe an update will fix this issue... If you know an alternative solution, it would be welcome ! Thanks for your help, Pierre _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio