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1MHz is in the middle of the AM broadcast band. At 1MHz, the maximum voltage gain of the TL072 audio opamp is only 3 times and its slew rate cuts the output to only 1V RMS.
The opamp circuit does not vary the amplitude of the 1MHz signal so it does not produce amplitude modulation (AM).
The opamp circuit does not vary the amplitude of the 1MHz signal so it does not produce amplitude modulation (AM).
