Disclosed are systems and methods of eliminating or reducing interference
resulting from harmonics of local oscillator frequencies of mixers. In
one embodiment, a determination is made as to a zone or zones in which
harmonics result in undesired spur generation. Inter-tuner spurs and
intra-tuner spurs may be identified such that frequency information of
the identified spurs may be utilized to define a plurality of exclusion
zones. LO frequencies may subsequently be efficiently selected in view of
the exclusion zone information. Embodiments may also determine a score
for identified spurs which may be used to optimally select from within a
set of spur-generating local oscillator frequencies.