I am designing a search head with one Tx coil at 8" D and one Rx1 coil at 4" D with a Rx2 bucking coil at 6" D. My reasoning is, since Rx2 is opposite to Rx1 to null, then it will receive a target signal opposite also. Then I will direct the composite received signals to both inputs of a differential amplifier, so the opposing signals will now add to increase the overall received signal. Any comments?
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