Buy a license RF Mixer Spur Calculator
fspur = | n·RF ± m·LO | , n=0..9, m=0..9
Window 1 Window 2 Window 3 Overlap is inclusive (≥1 Hz)
n m ± Order IF from RF Range 1 (MHz) IF from RF Range 2 (MHz) IF from RF Range 3 (MHz)
Mode
RX: input=RF, output=IF · TX swaps labels
LO (MHz)
Duplicates are suppressed: if n=0 or m=0, “+” and “−” are identical under |·|. (n,m)=(0,0) excluded.
RF input ranges (MHz)
IF output windows (MHz)
Summary
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Highlight triggers if computed output range overlaps any window by ≥1 Hz. Internally everything is in MHz (1 Hz = 1e-6 MHz).