RFICDUDE
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The 10kHz IF is a problem because the 30MHz filter does not provide much rejection of the 30.020MHz sum mixer product (fin+flo).
You would, at least, want the sum mixer product to be in the stopband of the 30MHz filter.
So is it possible to have the transmitter put out fc=70kHz and tune the LO to 30.07MHz?
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