Patent ID: 7343142

Claim:
A tuner comprising: an input for receiving a broadband signal containing a plurality of channels for reception; one of a zero intermediate frequency frequency changer and a near-zero intermediate frequency frequency changer for selecting any one of at least some of said channels and comprising at least one mixer and commutating signal generator, said frequency changer having a first tuning range with an upper frequency limit f 2 and a lower frequency limit f 1 ; and a filter arrangement disposed between said frequency changer and said tuner input and comprising a plurality of signal paths of different frequency responses selectable one at a time for insertion between said frequency changer and said tuner input, a first of said signal paths comprising a first non-tracking filter for providing at least a first predetermined minimum attenuation at a frequency which is one of N 1 f 1 and f 2 /N 1 , where N 1 is an integer greater than one and less than 4.