I use a TVRX daughterboard to acquire VHF signals. I believe (but I may
mistaken) that the TVRX daughterboard downconverts RF signals to a
of 6MHz bandwidth before going to the ADC. The function usrp_rx_cfile
(which I use to acquire signals) has a minimum decimation factor of 8
sampling rate of 64Ms/s. So it gives a maximum sampling rate of 8MHz.
Nyquist theorem tells us that to acquire properly a signal occupying a
between 0 and 6MHz, the sampling rate shall be at least 12MHz, which is
then unreachable by the TVRX daughterboard.
So, are my figures wrong, or am I missing something ?
Thanks for your lights,