[Discuss-gnuradio] Re: AGC and PGC

2007-12-15 Thread JALLON Pierre 201932
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 detecte

[Discuss-gnuradio] Re: AGC and PGC

2007-12-13 Thread Aadil Volkwin
Hi Pierre, As far as I understand the TVRx board has two AGC stages: An RF and IF AGC. Look in this file: (gnuradio-3.1.1/gr-usrp/src/db_tv_rx.py) to see how GnuRadio models the gain characteristics in the data sheet and subsequently sets the appropriate registers. Here you will note that the PGA