The MFJ-1026 Noise Canceling box is used to phase out strong RFI on the Elecraft K3 on 160 meters. 3 auxiliary noise antennas are selectable from the MFJ tuner – a 3 foot vertical, 40 meter dipole and a 160m receiving loop. The loop is used in this video since it hears the RFI the best. The noise is probably from a utility pole or a plasma TV.

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