Robert Schlabbach wrote:
yes, there are some cards based on the VES1820 out there which invert the spectrum compared to other cards using the same demod but another tuner module. The L64781 based DVB-T NIMs I know report no inversion as well.So to not have a spectral inversion in the tuner, you would have to have a tuner in which you _subtract_ the IF center frequency from the desired target frequency to get the PLL frequency. Do such tuner modules really exist? If not, they *all* spectrally invert the signal...