2H-5.2 You receive an FCC Notice of Violation stating that your station was heard on 21,375 kHz. At the time listed on the notice, you were operating on 7125 kHz. What is a possible cause of this violation?
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Your transmitter has a defective power-supply filter capacitor
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Your CW keying speed was excessively fast
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Your transmitter was radiating excess harmonic signals
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Your transmitter has a defective power-supply filter choke