Sorry if the question was re-posted.
Can anyone reply this entry level question? In complex data representation such as the attached image by grc, the LPF cut the frequency in both direction(+/- freq) which the center frequency is 0Hz http://www.fungkai.com/~howie/sdr/complex_1_basefreq0.gif When I set the base frequency to a large positive value such as 10MHz, the cutoff shows on both side apart from the center frequency too. http://www.fungkai.com/~howie/sdr/complex_1_basefreq10.gif What's the frequency lower then the center frequency represent? _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio