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OCR: 100 50 RESISTANCE REACTANCE 50 100 4.0 FREQUENCY (MHz) Figure Measured dipole impedance Measured values of an 80- meter dipole at 40 feet elevation, across the 80. -meter band (data from Maxwell, 1989) 1f the antenna being measured has high SWR at the band edges, the reactance curve will develop curva ture, noticeable at the band edges. OHMS FREOUENCY