In article ,
Steve Nosko wrote:

Oh boy! In the olden days I have seen mixer products charts. I think the
idea was to plot the places where all the harmonics of the two inputs
produced products so you could pick an L.O. and IF which didn't have
problems. However, I'm at a loss to point to anything. I probably have one
buried in the reams of stuff I saved to use in the future...argggg
I'm sure Excel can do this if you want to put in all the formulas (and know
what to calculate)

Shouldn't be dreadfully hard, I think.

Assuming two frequencies F1 and F2, you'll get mixing products at
the sum (F1+F2) and difference (abs(F1-F2)). To deal with harmonics
and higher-order mixing products, I believe you can generalize this by
including two integer multiplier factors M and N whose values run from
1 up to as high as you care to go. Then, expect mixing products to be
at (M*F1)+(N*F2) and abs((M*F1)-(N*F2)). The amplitudes of the mixing
products will be lower as the multipliers go up... you could probably
kluge in an estimation formula of some sort.

Calculate the various mixing frequencies, and estimated levels in a
square matrix, link the data to a two-column arrangement, and generate
a plot of level vs. frequency.

--
Dave Platt AE6EO
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