> Mike says:
>
> >then IMD will not occur, only even order cross modulation which
> >isn't relevant in narrow band RF applications
>
>
> Even order distortion cannot cause cross modulation. The mathematics is
> fairly straightforward, but for me, exhausting, because I'm not good at
> math.
> Cross modulation requires an odd order term. Even order distortion
> produces harmonics, and even order IMD products. In mixers, it also
> produces the 'half IF' spurious response, where a strong unwnated signal
> that produces a signal of half the IF gives a response. This is also
> occsaionally referred to as 'repeat spot frequency responses'.
>
> 73
>
> Peter G3RZP
>
>
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